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  1. <?php
  2. /**
  3.  * Post functions and post utility function.
  4.  *
  5.  * @package WordPress
  6.  * @subpackage Post
  7.  * @since 1.5.0
  8.  */
  9.  
  10. //
  11. // Post Type Registration
  12. //
  13.  
  14. /**
  15.  * Creates the initial post types when 'init' action is fired.
  16.  *
  17.  * @since 2.9.0
  18.  */
  19. function create_initial_post_types() {
  20.     register_post_type( 'post', array(
  21.         'labels' => array(
  22.             'name_admin_bar' => _x( 'Post', 'add new on admin bar' ),
  23.         ),
  24.         'public'  => true,
  25.         '_builtin' => true, /* internal use only. don't use this when registering your own post type. */
  26.         '_edit_link' => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  27.         'capability_type' => 'post',
  28.         'map_meta_cap' => true,
  29.         'hierarchical' => false,
  30.         'rewrite' => false,
  31.         'query_var' => false,
  32.         'delete_with_user' => true,
  33.         'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'trackbacks', 'custom-fields', 'comments', 'revisions', 'post-formats' ),
  34.     ) );
  35.  
  36.     register_post_type( 'page', array(
  37.         'labels' => array(
  38.             'name_admin_bar' => _x( 'Page', 'add new on admin bar' ),
  39.         ),
  40.         'public' => true,
  41.         'publicly_queryable' => false,
  42.         '_builtin' => true, /* internal use only. don't use this when registering your own post type. */
  43.         '_edit_link' => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  44.         'capability_type' => 'page',
  45.         'map_meta_cap' => true,
  46.         'hierarchical' => true,
  47.         'rewrite' => false,
  48.         'query_var' => false,
  49.         'delete_with_user' => true,
  50.         'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'page-attributes', 'custom-fields', 'comments', 'revisions' ),
  51.     ) );
  52.  
  53.     register_post_type( 'attachment', array(
  54.         'labels' => array(
  55.             'name' => _x('Media', 'post type general name'),
  56.             'name_admin_bar' => _x( 'Media', 'add new from admin bar' ),
  57.             'add_new' => _x( 'Add New', 'add new media' ),
  58.             'edit_item' => __( 'Edit Media' ),
  59.             'view_item' => __( 'View Attachment Page' ),
  60.         ),
  61.         'public' => true,
  62.         'show_ui' => true,
  63.         '_builtin' => true, /* internal use only. don't use this when registering your own post type. */
  64.         '_edit_link' => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
  65.         'capability_type' => 'post',
  66.         'capabilities' => array(
  67.             'create_posts' => 'upload_files',
  68.         ),
  69.         'map_meta_cap' => true,
  70.         'hierarchical' => false,
  71.         'rewrite' => false,
  72.         'query_var' => false,
  73.         'show_in_nav_menus' => false,
  74.         'delete_with_user' => true,
  75.         'supports' => array( 'title', 'author', 'comments' ),
  76.     ) );
  77.  
  78.     register_post_type( 'revision', array(
  79.         'labels' => array(
  80.             'name' => __( 'Revisions' ),
  81.             'singular_name' => __( 'Revision' ),
  82.         ),
  83.         'public' => false,
  84.         '_builtin' => true, /* internal use only. don't use this when registering your own post type. */
  85.         '_edit_link' => 'revision.php?revision=%d', /* internal use only. don't use this when registering your own post type. */
  86.         'capability_type' => 'post',
  87.         'map_meta_cap' => true,
  88.         'hierarchical' => false,
  89.         'rewrite' => false,
  90.         'query_var' => false,
  91.         'can_export' => false,
  92.         'delete_with_user' => true,
  93.         'supports' => array( 'author' ),
  94.     ) );
  95.  
  96.     register_post_type( 'nav_menu_item', array(
  97.         'labels' => array(
  98.             'name' => __( 'Navigation Menu Items' ),
  99.             'singular_name' => __( 'Navigation Menu Item' ),
  100.         ),
  101.         'public' => false,
  102.         '_builtin' => true, /* internal use only. don't use this when registering your own post type. */
  103.         'hierarchical' => false,
  104.         'rewrite' => false,
  105.         'delete_with_user' => false,
  106.         'query_var' => false,
  107.     ) );
  108.  
  109.     register_post_status( 'publish', array(
  110.         'label'       => _x( 'Published', 'post' ),
  111.         'public'      => true,
  112.         '_builtin'    => true, /* internal use only. */
  113.         'label_count' => _n_noop( 'Published <span class="count">(%s)</span>', 'Published <span class="count">(%s)</span>' ),
  114.     ) );
  115.  
  116.     register_post_status( 'future', array(
  117.         'label'       => _x( 'Scheduled', 'post' ),
  118.         'protected'   => true,
  119.         '_builtin'    => true, /* internal use only. */
  120.         'label_count' => _n_noop('Scheduled <span class="count">(%s)</span>', 'Scheduled <span class="count">(%s)</span>' ),
  121.     ) );
  122.  
  123.     register_post_status( 'draft', array(
  124.         'label'       => _x( 'Draft', 'post' ),
  125.         'protected'   => true,
  126.         '_builtin'    => true, /* internal use only. */
  127.         'label_count' => _n_noop( 'Draft <span class="count">(%s)</span>', 'Drafts <span class="count">(%s)</span>' ),
  128.     ) );
  129.  
  130.     register_post_status( 'pending', array(
  131.         'label'       => _x( 'Pending', 'post' ),
  132.         'protected'   => true,
  133.         '_builtin'    => true, /* internal use only. */
  134.         'label_count' => _n_noop( 'Pending <span class="count">(%s)</span>', 'Pending <span class="count">(%s)</span>' ),
  135.     ) );
  136.  
  137.     register_post_status( 'private', array(
  138.         'label'       => _x( 'Private', 'post' ),
  139.         'private'     => true,
  140.         '_builtin'    => true, /* internal use only. */
  141.         'label_count' => _n_noop( 'Private <span class="count">(%s)</span>', 'Private <span class="count">(%s)</span>' ),
  142.     ) );
  143.  
  144.     register_post_status( 'trash', array(
  145.         'label'       => _x( 'Trash', 'post' ),
  146.         'internal'    => true,
  147.         '_builtin'    => true, /* internal use only. */
  148.         'label_count' => _n_noop( 'Trash <span class="count">(%s)</span>', 'Trash <span class="count">(%s)</span>' ),
  149.         'show_in_admin_status_list' => true,
  150.     ) );
  151.  
  152.     register_post_status( 'auto-draft', array(
  153.         'label'    => 'auto-draft',
  154.         'internal' => true,
  155.         '_builtin' => true, /* internal use only. */
  156.     ) );
  157.  
  158.     register_post_status( 'inherit', array(
  159.         'label'    => 'inherit',
  160.         'internal' => true,
  161.         '_builtin' => true, /* internal use only. */
  162.         'exclude_from_search' => false,
  163.     ) );
  164. }
  165. add_action( 'init', 'create_initial_post_types', 0 ); // highest priority
  166.  
  167. /**
  168.  * Retrieve attached file path based on attachment ID.
  169.  *
  170.  * By default the path will go through the 'get_attached_file' filter, but
  171.  * passing a true to the $unfiltered argument of get_attached_file() will
  172.  * return the file path unfiltered.
  173.  *
  174.  * The function works by getting the single post meta name, named
  175.  * '_wp_attached_file' and returning it. This is a convenience function to
  176.  * prevent looking up the meta name and provide a mechanism for sending the
  177.  * attached filename through a filter.
  178.  *
  179.  * @since 2.0.0
  180.  *
  181.  * @param int $attachment_id Attachment ID.
  182.  * @param bool $unfiltered Whether to apply filters.
  183.  * @return string|bool The file path to where the attached file should be, false otherwise.
  184.  */
  185. function get_attached_file( $attachment_id, $unfiltered = false ) {
  186.     $file = get_post_meta( $attachment_id, '_wp_attached_file', true );
  187.     // If the file is relative, prepend upload dir
  188.     if ( $file && 0 !== strpos($file, '/') && !preg_match('|^.:\\\|', $file) && ( ($uploads = wp_upload_dir()) && false === $uploads['error'] ) )
  189.         $file = $uploads['basedir'] . "/$file";
  190.     if ( $unfiltered )
  191.         return $file;
  192.     return apply_filters( 'get_attached_file', $file, $attachment_id );
  193. }
  194.  
  195. /**
  196.  * Update attachment file path based on attachment ID.
  197.  *
  198.  * Used to update the file path of the attachment, which uses post meta name
  199.  * '_wp_attached_file' to store the path of the attachment.
  200.  *
  201.  * @since 2.1.0
  202.  * @uses apply_filters() Calls 'update_attached_file' on file path and attachment ID.
  203.  *
  204.  * @param int $attachment_id Attachment ID
  205.  * @param string $file File path for the attachment
  206.  * @return bool True on success, false on failure.
  207.  */
  208. function update_attached_file( $attachment_id, $file ) {
  209.     if ( !get_post( $attachment_id ) )
  210.         return false;
  211.  
  212.     $file = apply_filters( 'update_attached_file', $file, $attachment_id );
  213.     if ( $file = _wp_relative_upload_path( $file ) )
  214.         return update_post_meta( $attachment_id, '_wp_attached_file', $file );
  215.     else
  216.         return delete_post_meta( $attachment_id, '_wp_attached_file' );
  217. }
  218.  
  219. /**
  220.  * Return relative path to an uploaded file.
  221.  *
  222.  * The path is relative to the current upload dir.
  223.  *
  224.  * @since 2.9.0
  225.  * @uses apply_filters() Calls '_wp_relative_upload_path' on file path.
  226.  *
  227.  * @param string $path Full path to the file
  228.  * @return string relative path on success, unchanged path on failure.
  229.  */
  230. function _wp_relative_upload_path( $path ) {
  231.     $new_path = $path;
  232.  
  233.     $uploads = wp_upload_dir();
  234.     if ( 0 === strpos( $new_path, $uploads['basedir'] ) ) {
  235.             $new_path = str_replace( $uploads['basedir'], '', $new_path );
  236.             $new_path = ltrim( $new_path, '/' );
  237.     }
  238.  
  239.     return apply_filters( '_wp_relative_upload_path', $new_path, $path );
  240. }
  241.  
  242. /**
  243.  * Retrieve all children of the post parent ID.
  244.  *
  245.  * Normally, without any enhancements, the children would apply to pages. In the
  246.  * context of the inner workings of WordPress, pages, posts, and attachments
  247.  * share the same table, so therefore the functionality could apply to any one
  248.  * of them. It is then noted that while this function does not work on posts, it
  249.  * does not mean that it won't work on posts. It is recommended that you know
  250.  * what context you wish to retrieve the children of.
  251.  *
  252.  * Attachments may also be made the child of a post, so if that is an accurate
  253.  * statement (which needs to be verified), it would then be possible to get
  254.  * all of the attachments for a post. Attachments have since changed since
  255.  * version 2.5, so this is most likely unaccurate, but serves generally as an
  256.  * example of what is possible.
  257.  *
  258.  * The arguments listed as defaults are for this function and also of the
  259.  * {@link get_posts()} function. The arguments are combined with the
  260.  * get_children defaults and are then passed to the {@link get_posts()}
  261.  * function, which accepts additional arguments. You can replace the defaults in
  262.  * this function, listed below and the additional arguments listed in the
  263.  * {@link get_posts()} function.
  264.  *
  265.  * The 'post_parent' is the most important argument and important attention
  266.  * needs to be paid to the $args parameter. If you pass either an object or an
  267.  * integer (number), then just the 'post_parent' is grabbed and everything else
  268.  * is lost. If you don't specify any arguments, then it is assumed that you are
  269.  * in The Loop and the post parent will be grabbed for from the current post.
  270.  *
  271.  * The 'post_parent' argument is the ID to get the children. The 'numberposts'
  272.  * is the amount of posts to retrieve that has a default of '-1', which is
  273.  * used to get all of the posts. Giving a number higher than 0 will only
  274.  * retrieve that amount of posts.
  275.  *
  276.  * The 'post_type' and 'post_status' arguments can be used to choose what
  277.  * criteria of posts to retrieve. The 'post_type' can be anything, but WordPress
  278.  * post types are 'post', 'pages', and 'attachments'. The 'post_status'
  279.  * argument will accept any post status within the write administration panels.
  280.  *
  281.  * @see get_posts() Has additional arguments that can be replaced.
  282.  * @internal Claims made in the long description might be inaccurate.
  283.  *
  284.  * @since 2.0.0
  285.  *
  286.  * @param mixed $args Optional. User defined arguments for replacing the defaults.
  287.  * @param string $output Optional. Constant for return type, either OBJECT (default), ARRAY_A, ARRAY_N.
  288.  * @return array|bool False on failure and the type will be determined by $output parameter.
  289.  */
  290. function get_children($args = '', $output = OBJECT) {
  291.     $kids = array();
  292.     if ( empty( $args ) ) {
  293.         if ( isset( $GLOBALS['post'] ) ) {
  294.             $args = array('post_parent' => (int) $GLOBALS['post']->post_parent );
  295.         } else {
  296.             return $kids;
  297.         }
  298.     } elseif ( is_object( $args ) ) {
  299.         $args = array('post_parent' => (int) $args->post_parent );
  300.     } elseif ( is_numeric( $args ) ) {
  301.         $args = array('post_parent' => (int) $args);
  302.     }
  303.  
  304.     $defaults = array(
  305.         'numberposts' => -1, 'post_type' => 'any',
  306.         'post_status' => 'any', 'post_parent' => 0,
  307.     );
  308.  
  309.     $r = wp_parse_args( $args, $defaults );
  310.  
  311.     $children = get_posts( $r );
  312.  
  313.     if ( ! $children )
  314.         return $kids;
  315.  
  316.     if ( ! empty( $r['fields'] ) )
  317.         return $children;
  318.  
  319.     update_post_cache($children);
  320.  
  321.     foreach ( $children as $key => $child )
  322.         $kids[$child->ID] = $children[$key];
  323.  
  324.     if ( $output == OBJECT ) {
  325.         return $kids;
  326.     } elseif ( $output == ARRAY_A ) {
  327.         foreach ( (array) $kids as $kid )
  328.             $weeuns[$kid->ID] = get_object_vars($kids[$kid->ID]);
  329.         return $weeuns;
  330.     } elseif ( $output == ARRAY_N ) {
  331.         foreach ( (array) $kids as $kid )
  332.             $babes[$kid->ID] = array_values(get_object_vars($kids[$kid->ID]));
  333.         return $babes;
  334.     } else {
  335.         return $kids;
  336.     }
  337. }
  338.  
  339. /**
  340.  * Get extended entry info (<!--more-->).
  341.  *
  342.  * There should not be any space after the second dash and before the word
  343.  * 'more'. There can be text or space(s) after the word 'more', but won't be
  344.  * referenced.
  345.  *
  346.  * The returned array has 'main', 'extended', and 'more_text' keys. Main has the text before
  347.  * the <code><!--more--></code>. The 'extended' key has the content after the
  348.  * <code><!--more--></code> comment. The 'more_text' key has the custom "Read More" text.
  349.  *
  350.  * @since 1.0.0
  351.  *
  352.  * @param string $post Post content.
  353.  * @return array Post before ('main'), after ('extended'), and custom readmore ('more_text').
  354.  */
  355. function get_extended($post) {
  356.     //Match the new style more links
  357.     if ( preg_match('/<!--more(.*?)?-->/', $post, $matches) ) {
  358.         list($main, $extended) = explode($matches[0], $post, 2);
  359.         $more_text = $matches[1];
  360.     } else {
  361.         $main = $post;
  362.         $extended = '';
  363.         $more_text = '';
  364.     }
  365.  
  366.     // ` leading and trailing whitespace
  367.     $main = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $main);
  368.     $extended = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $extended);
  369.     $more_text = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $more_text);
  370.  
  371.     return array( 'main' => $main, 'extended' => $extended, 'more_text' => $more_text );
  372. }
  373.  
  374. /**
  375.  * Retrieves post data given a post ID or post object.
  376.  *
  377.  * See {@link sanitize_post()} for optional $filter values. Also, the parameter
  378.  * $post, must be given as a variable, since it is passed by reference.
  379.  *
  380.  * @since 1.5.1
  381.  * @link http://codex.wordpress.org/Function_Reference/get_post
  382.  *
  383.  * @param int|object $post Post ID or post object. Optional, default is the current post from the loop.
  384.  * @param string $output Optional, default is Object. Either OBJECT, ARRAY_A, or ARRAY_N.
  385.  * @param string $filter Optional, default is raw.
  386.  * @return WP_Post|null WP_Post on success or null on failure
  387.  */
  388. function get_post( $post = null, $output = OBJECT, $filter = 'raw' ) {
  389.     if ( empty( $post ) && isset( $GLOBALS['post'] ) )
  390.         $post = $GLOBALS['post'];
  391.  
  392.     if ( is_a( $post, 'WP_Post' ) ) {
  393.         $_post = $post;
  394.     } elseif ( is_object( $post ) ) {
  395.         if ( empty( $post->filter ) ) {
  396.             $_post = sanitize_post( $post, 'raw' );
  397.             $_post = new WP_Post( $_post );
  398.         } elseif ( 'raw' == $post->filter ) {
  399.             $_post = new WP_Post( $post );
  400.         } else {
  401.             $_post = WP_Post::get_instance( $post->ID );
  402.         }
  403.     } else {
  404.         $_post = WP_Post::get_instance( $post );
  405.     }
  406.  
  407.     if ( ! $_post )
  408.         return null;
  409.  
  410.     $_post = $_post->filter( $filter );
  411.  
  412.     if ( $output == ARRAY_A )
  413.         return $_post->to_array();
  414.     elseif ( $output == ARRAY_N )
  415.         return array_values( $_post->to_array() );
  416.  
  417.     return $_post;
  418. }
  419.  
  420. /**
  421.  * WordPress Post class.
  422.  *
  423.  * @since 3.5.0
  424.  *
  425.  */
  426. final class WP_Post {
  427.  
  428.     /**
  429.      * Post ID.
  430.      *
  431.      * @var int
  432.      */
  433.     public $ID;
  434.  
  435.     /**
  436.      * ID of post author.
  437.      *
  438.      * A numeric string, for compatibility reasons.
  439.      *
  440.      * @var string
  441.      */
  442.     public $post_author = 0;
  443.  
  444.     /**
  445.      * The post's local publication time.
  446.      *
  447.      * @var string
  448.      */
  449.     public $post_date = '0000-00-00 00:00:00';
  450.  
  451.     /**
  452.      * The post's GMT publication time.
  453.      *
  454.      * @var string
  455.      */
  456.     public $post_date_gmt = '0000-00-00 00:00:00';
  457.  
  458.     /**
  459.      * The post's content.
  460.      *
  461.      * @var string
  462.      */
  463.     public $post_content = '';
  464.  
  465.     /**
  466.      * The post's title.
  467.      *
  468.      * @var string
  469.      */
  470.     public $post_title = '';
  471.  
  472.     /**
  473.      * The post's excerpt.
  474.      *
  475.      * @var string
  476.      */
  477.     public $post_excerpt = '';
  478.  
  479.     /**
  480.      * The post's status.
  481.      *
  482.      * @var string
  483.      */
  484.     public $post_status = 'publish';
  485.  
  486.     /**
  487.      * Whether comments are allowed.
  488.      *
  489.      * @var string
  490.      */
  491.     public $comment_status = 'open';
  492.  
  493.     /**
  494.      * Whether pings are allowed.
  495.      *
  496.      * @var string
  497.      */
  498.     public $ping_status = 'open';
  499.  
  500.     /**
  501.      * The post's password in plain text.
  502.      *
  503.      * @var string
  504.      */
  505.     public $post_password = '';
  506.  
  507.     /**
  508.      * The post's slug.
  509.      *
  510.      * @var string
  511.      */
  512.     public $post_name = '';
  513.  
  514.     /**
  515.      * URLs queued to be pinged.
  516.      *
  517.      * @var string
  518.      */
  519.     public $to_ping = '';
  520.  
  521.     /**
  522.      * URLs that have been pinged.
  523.      *
  524.      * @var string
  525.      */
  526.     public $pinged = '';
  527.  
  528.     /**
  529.      * The post's local modified time.
  530.      *
  531.      * @var string
  532.      */
  533.     public $post_modified = '0000-00-00 00:00:00';
  534.  
  535.     /**
  536.      * The post's GMT modified time.
  537.      *
  538.      * @var string
  539.      */
  540.     public $post_modified_gmt = '0000-00-00 00:00:00';
  541.  
  542.     /**
  543.      * A utility DB field for post content.
  544.      *
  545.      *
  546.      * @var string
  547.      */
  548.     public $post_content_filtered = '';
  549.  
  550.     /**
  551.      * ID of a post's parent post.
  552.      *
  553.      * @var int
  554.      */
  555.     public $post_parent = 0;
  556.  
  557.     /**
  558.      * The unique identifier for a post, not necessarily a URL, used as the feed GUID.
  559.      *
  560.      * @var string
  561.      */
  562.     public $guid = '';
  563.  
  564.     /**
  565.      * A field used for ordering posts.
  566.      *
  567.      * @var int
  568.      */
  569.     public $menu_order = 0;
  570.  
  571.     /**
  572.      * The post's type, like post or page.
  573.      *
  574.      * @var string
  575.      */
  576.     public $post_type = 'post';
  577.  
  578.     /**
  579.      * An attachment's mime type.
  580.      *
  581.      * @var string
  582.      */
  583.     public $post_mime_type = '';
  584.  
  585.     /**
  586.      * Cached comment count.
  587.      *
  588.      * A numeric string, for compatibility reasons.
  589.      *
  590.      * @var string
  591.      */
  592.     public $comment_count = 0;
  593.  
  594.     /**
  595.      * Stores the post object's sanitization level.
  596.      *
  597.      * Does not correspond to a DB field.
  598.      *
  599.      * @var string
  600.      */
  601.     public $filter;
  602.  
  603.     public static function get_instance( $post_id ) {
  604.         global $wpdb;
  605.  
  606.         $post_id = (int) $post_id;
  607.         if ( ! $post_id )
  608.             return false;
  609.  
  610.         $_post = wp_cache_get( $post_id, 'posts' );
  611.  
  612.         if ( ! $_post ) {
  613.             $_post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d LIMIT 1", $post_id ) );
  614.  
  615.             if ( ! $_post )
  616.                 return false;
  617.  
  618.             $_post = sanitize_post( $_post, 'raw' );
  619.             wp_cache_add( $_post->ID, $_post, 'posts' );
  620.         } elseif ( empty( $_post->filter ) ) {
  621.             $_post = sanitize_post( $_post, 'raw' );
  622.         }
  623.  
  624.         return new WP_Post( $_post );
  625.     }
  626.  
  627.     public function __construct( $post ) {
  628.         foreach ( get_object_vars( $post ) as $key => $value )
  629.             $this->$key = $value;
  630.     }
  631.  
  632.     public function __isset( $key ) {
  633.         if ( 'ancestors' == $key )
  634.             return true;
  635.  
  636.         if ( 'page_template' == $key )
  637.             return ( 'page' == $this->post_type );
  638.  
  639.         if ( 'post_category' == $key )
  640.            return true;
  641.  
  642.         if ( 'tags_input' == $key )
  643.            return true;
  644.  
  645.         return metadata_exists( 'post', $this->ID, $key );
  646.     }
  647.  
  648.     public function __get( $key ) {
  649.         if ( 'page_template' == $key && $this->__isset( $key ) ) {
  650.             return get_post_meta( $this->ID, '_wp_page_template', true );
  651.         }
  652.  
  653.         if ( 'post_category' == $key ) {
  654.             if ( is_object_in_taxonomy( $this->post_type, 'category' ) )
  655.                 $terms = get_the_terms( $this, 'category' );
  656.  
  657.             if ( empty( $terms ) )
  658.                 return array();
  659.  
  660.             return wp_list_pluck( $terms, 'term_id' );
  661.         }
  662.  
  663.         if ( 'tags_input' == $key ) {
  664.             if ( is_object_in_taxonomy( $this->post_type, 'post_tag' ) )
  665.                 $terms = get_the_terms( $this, 'post_tag' );
  666.  
  667.             if ( empty( $terms ) )
  668.                 return array();
  669.  
  670.             return wp_list_pluck( $terms, 'name' );
  671.         }
  672.  
  673.         // Rest of the values need filtering
  674.  
  675.         if ( 'ancestors' == $key )
  676.             $value = get_post_ancestors( $this );
  677.         else
  678.             $value = get_post_meta( $this->ID, $key, true );
  679.  
  680.         if ( $this->filter )
  681.             $value = sanitize_post_field( $key, $value, $this->ID, $this->filter );
  682.  
  683.         return $value;
  684.     }
  685.  
  686.     public function filter( $filter ) {
  687.         if ( $this->filter == $filter )
  688.             return $this;
  689.  
  690.         if ( $filter == 'raw' )
  691.             return self::get_instance( $this->ID );
  692.  
  693.         return sanitize_post( $this, $filter );
  694.     }
  695.  
  696.     public function to_array() {
  697.         $post = get_object_vars( $this );
  698.  
  699.         foreach ( array( 'ancestors', 'page_template', 'post_category', 'tags_input' ) as $key ) {
  700.             if ( $this->__isset( $key ) )
  701.                 $post[ $key ] = $this->__get( $key );
  702.         }
  703.  
  704.         return $post;
  705.     }
  706. }
  707.  
  708. /**
  709.  * Retrieve ancestors of a post.
  710.  *
  711.  * @since 2.5.0
  712.  *
  713.  * @param int|object $post Post ID or post object
  714.  * @return array Ancestor IDs or empty array if none are found.
  715.  */
  716. function get_post_ancestors( $post ) {
  717.     $post = get_post( $post );
  718.  
  719.     if ( ! $post || empty( $post->post_parent ) || $post->post_parent == $post->ID )
  720.         return array();
  721.  
  722.     $ancestors = array();
  723.  
  724.     $id = $ancestors[] = $post->post_parent;
  725.  
  726.     while ( $ancestor = get_post( $id ) ) {
  727.         // Loop detection: If the ancestor has been seen before, break.
  728.         if ( empty( $ancestor->post_parent ) || ( $ancestor->post_parent == $post->ID ) || in_array( $ancestor->post_parent, $ancestors ) )
  729.             break;
  730.  
  731.         $id = $ancestors[] = $ancestor->post_parent;
  732.     }
  733.  
  734.     return $ancestors;
  735. }
  736.  
  737. /**
  738.  * Retrieve data from a post field based on Post ID.
  739.  *
  740.  * Examples of the post field will be, 'post_type', 'post_status', 'post_content',
  741.  * etc and based off of the post object property or key names.
  742.  *
  743.  * The context values are based off of the taxonomy filter functions and
  744.  * supported values are found within those functions.
  745.  *
  746.  * @since 2.3.0
  747.  * @uses sanitize_post_field() See for possible $context values.
  748.  *
  749.  * @param string $field Post field name.
  750.  * @param int|object $post Post ID or post object.
  751.  * @param string $context Optional. How to filter the field. Default is 'display'.
  752.  * @return string The value of the post field on success, empty string on failure.
  753.  */
  754. function get_post_field( $field, $post, $context = 'display' ) {
  755.     $post = get_post( $post );
  756.  
  757.     if ( !$post )
  758.         return '';
  759.  
  760.     if ( !isset($post->$field) )
  761.         return '';
  762.  
  763.     return sanitize_post_field($field, $post->$field, $post->ID, $context);
  764. }
  765.  
  766. /**
  767.  * Retrieve the mime type of an attachment based on the ID.
  768.  *
  769.  * This function can be used with any post type, but it makes more sense with
  770.  * attachments.
  771.  *
  772.  * @since 2.0.0
  773.  *
  774.  * @param int $ID Optional. Post ID. Default is the current post from the loop.
  775.  * @return string|bool The mime type on success, false on failure.
  776.  */
  777. function get_post_mime_type($ID = '') {
  778.     $post = get_post($ID);
  779.  
  780.     if ( is_object($post) )
  781.         return $post->post_mime_type;
  782.  
  783.     return false;
  784. }
  785.  
  786. /**
  787.  * Retrieve the post status based on the Post ID.
  788.  *
  789.  * If the post ID is of an attachment, then the parent post status will be given
  790.  * instead.
  791.  *
  792.  * @since 2.0.0
  793.  *
  794.  * @param int $ID Optional. Post ID. Default is the current post from the loop.
  795.  * @return string|bool Post status on success, false on failure.
  796.  */
  797. function get_post_status($ID = '') {
  798.     $post = get_post($ID);
  799.  
  800.     if ( !is_object($post) )
  801.         return false;
  802.  
  803.     if ( 'attachment' == $post->post_type ) {
  804.         if ( 'private' == $post->post_status )
  805.             return 'private';
  806.  
  807.         // Unattached attachments are assumed to be published
  808.         if ( ( 'inherit' == $post->post_status ) && ( 0 == $post->post_parent) )
  809.             return 'publish';
  810.  
  811.         // Inherit status from the parent
  812.         if ( $post->post_parent && ( $post->ID != $post->post_parent ) )
  813.             return get_post_status($post->post_parent);
  814.     }
  815.  
  816.     return $post->post_status;
  817. }
  818.  
  819. /**
  820.  * Retrieve all of the WordPress supported post statuses.
  821.  *
  822.  * Posts have a limited set of valid status values, this provides the
  823.  * post_status values and descriptions.
  824.  *
  825.  * @since 2.5.0
  826.  *
  827.  * @return array List of post statuses.
  828.  */
  829. function get_post_statuses() {
  830.     $status = array(
  831.         'draft'         => __('Draft'),
  832.         'pending'       => __('Pending Review'),
  833.         'private'       => __('Private'),
  834.         'publish'       => __('Published')
  835.     );
  836.  
  837.     return $status;
  838. }
  839.  
  840. /**
  841.  * Retrieve all of the WordPress support page statuses.
  842.  *
  843.  * Pages have a limited set of valid status values, this provides the
  844.  * post_status values and descriptions.
  845.  *
  846.  * @since 2.5.0
  847.  *
  848.  * @return array List of page statuses.
  849.  */
  850. function get_page_statuses() {
  851.     $status = array(
  852.         'draft'         => __('Draft'),
  853.         'private'       => __('Private'),
  854.         'publish'       => __('Published')
  855.     );
  856.  
  857.     return $status;
  858. }
  859.  
  860. /**
  861.  * Register a post status. Do not use before init.
  862.  *
  863.  * A simple function for creating or modifying a post status based on the
  864.  * parameters given. The function will accept an array (second optional
  865.  * parameter), along with a string for the post status name.
  866.  *
  867.  *
  868.  * Optional $args contents:
  869.  *
  870.  * label - A descriptive name for the post status marked for translation. Defaults to $post_status.
  871.  * public - Whether posts of this status should be shown in the front end of the site. Defaults to true.
  872.  * exclude_from_search - Whether to exclude posts with this post status from search results. Defaults to false.
  873.  * show_in_admin_all_list - Whether to include posts in the edit listing for their post type
  874.  * show_in_admin_status_list - Show in the list of statuses with post counts at the top of the edit
  875.  *                             listings, e.g. All (12) | Published (9) | My Custom Status (2) ...
  876.  *
  877.  * Arguments prefixed with an _underscore shouldn't be used by plugins and themes.
  878.  *
  879.  * @package WordPress
  880.  * @subpackage Post
  881.  * @since 3.0.0
  882.  * @uses $wp_post_statuses Inserts new post status object into the list
  883.  *
  884.  * @param string $post_status Name of the post status.
  885.  * @param array|string $args See above description.
  886.  */
  887. function register_post_status($post_status, $args = array()) {
  888.     global $wp_post_statuses;
  889.  
  890.     if (!is_array($wp_post_statuses))
  891.         $wp_post_statuses = array();
  892.  
  893.     // Args prefixed with an underscore are reserved for internal use.
  894.     $defaults = array(
  895.         'label' => false,
  896.         'label_count' => false,
  897.         'exclude_from_search' => null,
  898.         '_builtin' => false,
  899.         'public' => null,
  900.         'internal' => null,
  901.         'protected' => null,
  902.         'private' => null,
  903.         'publicly_queryable' => null,
  904.         'show_in_admin_status_list' => null,
  905.         'show_in_admin_all_list' => null,
  906.     );
  907.     $args = wp_parse_args($args, $defaults);
  908.     $args = (object) $args;
  909.  
  910.     $post_status = sanitize_key($post_status);
  911.     $args->name = $post_status;
  912.  
  913.     if ( null === $args->public && null === $args->internal && null === $args->protected && null === $args->private )
  914.         $args->internal = true;
  915.  
  916.     if ( null === $args->public  )
  917.         $args->public = false;
  918.  
  919.     if ( null === $args->private  )
  920.         $args->private = false;
  921.  
  922.     if ( null === $args->protected  )
  923.         $args->protected = false;
  924.  
  925.     if ( null === $args->internal  )
  926.         $args->internal = false;
  927.  
  928.     if ( null === $args->publicly_queryable )
  929.         $args->publicly_queryable = $args->public;
  930.  
  931.     if ( null === $args->exclude_from_search )
  932.         $args->exclude_from_search = $args->internal;
  933.  
  934.     if ( null === $args->show_in_admin_all_list )
  935.         $args->show_in_admin_all_list = !$args->internal;
  936.  
  937.     if ( null === $args->show_in_admin_status_list )
  938.         $args->show_in_admin_status_list = !$args->internal;
  939.  
  940.     if ( false === $args->label )
  941.         $args->label = $post_status;
  942.  
  943.     if ( false === $args->label_count )
  944.         $args->label_count = array( $args->label, $args->label );
  945.  
  946.     $wp_post_statuses[$post_status] = $args;
  947.  
  948.     return $args;
  949. }
  950.  
  951. /**
  952.  * Retrieve a post status object by name
  953.  *
  954.  * @package WordPress
  955.  * @subpackage Post
  956.  * @since 3.0.0
  957.  * @uses $wp_post_statuses
  958.  * @see register_post_status
  959.  * @see get_post_statuses
  960.  *
  961.  * @param string $post_status The name of a registered post status
  962.  * @return object A post status object
  963.  */
  964. function get_post_status_object( $post_status ) {
  965.     global $wp_post_statuses;
  966.  
  967.     if ( empty($wp_post_statuses[$post_status]) )
  968.         return null;
  969.  
  970.     return $wp_post_statuses[$post_status];
  971. }
  972.  
  973. /**
  974.  * Get a list of all registered post status objects.
  975.  *
  976.  * @package WordPress
  977.  * @subpackage Post
  978.  * @since 3.0.0
  979.  * @uses $wp_post_statuses
  980.  * @see register_post_status
  981.  * @see get_post_status_object
  982.  *
  983.  * @param array|string $args An array of key => value arguments to match against the post status objects.
  984.  * @param string $output The type of output to return, either post status 'names' or 'objects'. 'names' is the default.
  985.  * @param string $operator The logical operation to perform. 'or' means only one element
  986.  *  from the array needs to match; 'and' means all elements must match. The default is 'and'.
  987.  * @return array A list of post status names or objects
  988.  */
  989. function get_post_stati( $args = array(), $output = 'names', $operator = 'and' ) {
  990.     global $wp_post_statuses;
  991.  
  992.     $field = ('names' == $output) ? 'name' : false;
  993.  
  994.     return wp_filter_object_list($wp_post_statuses, $args, $operator, $field);
  995. }
  996.  
  997. /**
  998.  * Whether the post type is hierarchical.
  999.  *
  1000.  * A false return value might also mean that the post type does not exist.
  1001.  *
  1002.  * @since 3.0.0
  1003.  * @see get_post_type_object
  1004.  *
  1005.  * @param string $post_type Post type name
  1006.  * @return bool Whether post type is hierarchical.
  1007.  */
  1008. function is_post_type_hierarchical( $post_type ) {
  1009.     if ( ! post_type_exists( $post_type ) )
  1010.         return false;
  1011.  
  1012.     $post_type = get_post_type_object( $post_type );
  1013.     return $post_type->hierarchical;
  1014. }
  1015.  
  1016. /**
  1017.  * Checks if a post type is registered.
  1018.  *
  1019.  * @since 3.0.0
  1020.  * @uses get_post_type_object()
  1021.  *
  1022.  * @param string $post_type Post type name
  1023.  * @return bool Whether post type is registered.
  1024.  */
  1025. function post_type_exists( $post_type ) {
  1026.     return (bool) get_post_type_object( $post_type );
  1027. }
  1028.  
  1029. /**
  1030.  * Retrieve the post type of the current post or of a given post.
  1031.  *
  1032.  * @since 2.1.0
  1033.  *
  1034.  * @param int|object $post Optional. Post ID or post object. Default is the current post from the loop.
  1035.  * @return string|bool Post type on success, false on failure.
  1036.  */
  1037. function get_post_type( $post = null ) {
  1038.     if ( $post = get_post( $post ) )
  1039.         return $post->post_type;
  1040.  
  1041.     return false;
  1042. }
  1043.  
  1044. /**
  1045.  * Retrieve a post type object by name
  1046.  *
  1047.  * @package WordPress
  1048.  * @subpackage Post
  1049.  * @since 3.0.0
  1050.  * @uses $wp_post_types
  1051.  * @see register_post_type
  1052.  * @see get_post_types
  1053.  *
  1054.  * @param string $post_type The name of a registered post type
  1055.  * @return object A post type object
  1056.  */
  1057. function get_post_type_object( $post_type ) {
  1058.     global $wp_post_types;
  1059.  
  1060.     if ( empty($wp_post_types[$post_type]) )
  1061.         return null;
  1062.  
  1063.     return $wp_post_types[$post_type];
  1064. }
  1065.  
  1066. /**
  1067.  * Get a list of all registered post type objects.
  1068.  *
  1069.  * @package WordPress
  1070.  * @subpackage Post
  1071.  * @since 2.9.0
  1072.  * @uses $wp_post_types
  1073.  * @see register_post_type
  1074.  *
  1075.  * @param array|string $args An array of key => value arguments to match against the post type objects.
  1076.  * @param string $output The type of output to return, either post type 'names' or 'objects'. 'names' is the default.
  1077.  * @param string $operator The logical operation to perform. 'or' means only one element
  1078.  *  from the array needs to match; 'and' means all elements must match. The default is 'and'.
  1079.  * @return array A list of post type names or objects
  1080.  */
  1081. function get_post_types( $args = array(), $output = 'names', $operator = 'and' ) {
  1082.     global $wp_post_types;
  1083.  
  1084.     $field = ('names' == $output) ? 'name' : false;
  1085.  
  1086.     return wp_filter_object_list($wp_post_types, $args, $operator, $field);
  1087. }
  1088.  
  1089. /**
  1090.  * Register a post type. Do not use before init.
  1091.  *
  1092.  * A function for creating or modifying a post type based on the
  1093.  * parameters given. The function will accept an array (second optional
  1094.  * parameter), along with a string for the post type name.
  1095.  *
  1096.  * Optional $args contents:
  1097.  *
  1098.  * - label - Name of the post type shown in the menu. Usually plural. If not set, labels['name'] will be used.
  1099.  * - labels - An array of labels for this post type.
  1100.  *     * If not set, post labels are inherited for non-hierarchical types and page labels for hierarchical ones.
  1101.  *     * You can see accepted values in {@link get_post_type_labels()}.
  1102.  * - description - A short descriptive summary of what the post type is. Defaults to blank.
  1103.  * - public - Whether a post type is intended for use publicly either via the admin interface or by front-end users.
  1104.  *     * Defaults to false.
  1105.  *     * While the default settings of exclude_from_search, publicly_queryable, show_ui, and show_in_nav_menus are
  1106.  *       inherited from public, each does not rely on this relationship and controls a very specific intention.
  1107.  * - hierarchical - Whether the post type is hierarchical (e.g. page). Defaults to false.
  1108.  * - exclude_from_search - Whether to exclude posts with this post type from front end search results.
  1109.  *     * If not set, the opposite of public's current value is used.
  1110.  * - publicly_queryable - Whether queries can be performed on the front end for the post type as part of parse_request().
  1111.  *     * ?post_type={post_type_key}
  1112.  *     * ?{post_type_key}={single_post_slug}
  1113.  *     * ?{post_type_query_var}={single_post_slug}
  1114.  *     * If not set, the default is inherited from public.
  1115.  * - show_ui - Whether to generate a default UI for managing this post type in the admin.
  1116.  *     * If not set, the default is inherited from public.
  1117.  * - show_in_menu - Where to show the post type in the admin menu.
  1118.  *     * If true, the post type is shown in its own top level menu.
  1119.  *     * If false, no menu is shown
  1120.  *     * If a string of an existing top level menu (eg. 'tools.php' or 'edit.php?post_type=page'), the post type will
  1121.  *       be placed as a sub menu of that.
  1122.  *     * show_ui must be true.
  1123.  *     * If not set, the default is inherited from show_ui
  1124.  * - show_in_nav_menus - Makes this post type available for selection in navigation menus.
  1125.  *     * If not set, the default is inherited from public.
  1126.  * - show_in_admin_bar - Makes this post type available via the admin bar.
  1127.  *     * If not set, the default is inherited from show_in_menu
  1128.  * - menu_position - The position in the menu order the post type should appear.
  1129.  *     * show_in_menu must be true
  1130.  *     * Defaults to null, which places it at the bottom of its area.
  1131.  * - menu_icon - The url to the icon to be used for this menu. Defaults to use the posts icon.
  1132.  * - capability_type - The string to use to build the read, edit, and delete capabilities. Defaults to 'post'.
  1133.  *     * May be passed as an array to allow for alternative plurals when using this argument as a base to construct the
  1134.  *       capabilities, e.g. array('story', 'stories').
  1135.  * - capabilities - Array of capabilities for this post type.
  1136.  *     * By default the capability_type is used as a base to construct capabilities.
  1137.  *     * You can see accepted values in {@link get_post_type_capabilities()}.
  1138.  * - map_meta_cap - Whether to use the internal default meta capability handling. Defaults to false.
  1139.  * - supports - An alias for calling add_post_type_support() directly. Defaults to title and editor.
  1140.  *     * See {@link add_post_type_support()} for documentation.
  1141.  * - register_meta_box_cb - Provide a callback function that sets up the meta boxes
  1142.  *     for the edit form. Do remove_meta_box() and add_meta_box() calls in the callback.
  1143.  * - taxonomies - An array of taxonomy identifiers that will be registered for the post type.
  1144.  *     * Default is no taxonomies.
  1145.  *     * Taxonomies can be registered later with register_taxonomy() or register_taxonomy_for_object_type().
  1146.  * - has_archive - True to enable post type archives. Default is false.
  1147.  *     * Will generate the proper rewrite rules if rewrite is enabled.
  1148.  * - rewrite - Triggers the handling of rewrites for this post type. Defaults to true, using $post_type as slug.
  1149.  *     * To prevent rewrite, set to false.
  1150.  *     * To specify rewrite rules, an array can be passed with any of these keys
  1151.  *         * 'slug' => string Customize the permastruct slug. Defaults to $post_type key
  1152.  *         * 'with_front' => bool Should the permastruct be prepended with WP_Rewrite::$front. Defaults to true.
  1153.  *         * 'feeds' => bool Should a feed permastruct be built for this post type. Inherits default from has_archive.
  1154.  *         * 'pages' => bool Should the permastruct provide for pagination. Defaults to true.
  1155.  *         * 'ep_mask' => const Assign an endpoint mask.
  1156.  *             * If not specified and permalink_epmask is set, inherits from permalink_epmask.
  1157.  *             * If not specified and permalink_epmask is not set, defaults to EP_PERMALINK
  1158.  * - query_var - Sets the query_var key for this post type. Defaults to $post_type key
  1159.  *     * If false, a post type cannot be loaded at ?{query_var}={post_slug}
  1160.  *     * If specified as a string, the query ?{query_var_string}={post_slug} will be valid.
  1161.  * - can_export - Allows this post type to be exported. Defaults to true.
  1162.  * - delete_with_user - Whether to delete posts of this type when deleting a user.
  1163.  *     * If true, posts of this type belonging to the user will be moved to trash when then user is deleted.
  1164.  *     * If false, posts of this type belonging to the user will *not* be trashed or deleted.
  1165.  *     * If not set (the default), posts are trashed if post_type_supports('author'). Otherwise posts are not trashed or deleted.
  1166.  * - _builtin - true if this post type is a native or "built-in" post_type. THIS IS FOR INTERNAL USE ONLY!
  1167.  * - _edit_link - URL segement to use for edit link of this post type. THIS IS FOR INTERNAL USE ONLY!
  1168.  *
  1169.  * @since 2.9.0
  1170.  * @uses $wp_post_types Inserts new post type object into the list
  1171.  * @uses $wp_rewrite Gets default feeds
  1172.  * @uses $wp Adds query vars
  1173.  *
  1174.  * @param string $post_type Post type key, must not exceed 20 characters.
  1175.  * @param array|string $args See optional args description above.
  1176.  * @return object|WP_Error the registered post type object, or an error object.
  1177.  */
  1178. function register_post_type( $post_type, $args = array() ) {
  1179.     global $wp_post_types, $wp_rewrite, $wp;
  1180.  
  1181.     if ( ! is_array( $wp_post_types ) )
  1182.         $wp_post_types = array();
  1183.  
  1184.     // Args prefixed with an underscore are reserved for internal use.
  1185.     $defaults = array(
  1186.         'labels'               => array(),
  1187.         'description'          => '',
  1188.         'public'               => false,
  1189.         'hierarchical'         => false,
  1190.         'exclude_from_search'  => null,
  1191.         'publicly_queryable'   => null,
  1192.         'show_ui'              => null,
  1193.         'show_in_menu'         => null,
  1194.         'show_in_nav_menus'    => null,
  1195.         'show_in_admin_bar'    => null,
  1196.         'menu_position'        => null,
  1197.         'menu_icon'            => null,
  1198.         'capability_type'      => 'post',
  1199.         'capabilities'         => array(),
  1200.         'map_meta_cap'         => null,
  1201.         'supports'             => array(),
  1202.         'register_meta_box_cb' => null,
  1203.         'taxonomies'           => array(),
  1204.         'has_archive'          => false,
  1205.         'rewrite'              => true,
  1206.         'query_var'            => true,
  1207.         'can_export'           => true,
  1208.         'delete_with_user'     => null,
  1209.         '_builtin'             => false,
  1210.         '_edit_link'           => 'post.php?post=%d',
  1211.     );
  1212.     $args = wp_parse_args( $args, $defaults );
  1213.     $args = (object) $args;
  1214.  
  1215.     $post_type = sanitize_key( $post_type );
  1216.     $args->name = $post_type;
  1217.  
  1218.     if ( strlen( $post_type ) > 20 )
  1219.         return new WP_Error( 'post_type_too_long', __( 'Post types cannot exceed 20 characters in length' ) );
  1220.  
  1221.     // If not set, default to the setting for public.
  1222.     if ( null === $args->publicly_queryable )
  1223.         $args->publicly_queryable = $args->public;
  1224.  
  1225.     // If not set, default to the setting for public.
  1226.     if ( null === $args->show_ui )
  1227.         $args->show_ui = $args->public;
  1228.  
  1229.     // If not set, default to the setting for show_ui.
  1230.     if ( null === $args->show_in_menu || ! $args->show_ui )
  1231.         $args->show_in_menu = $args->show_ui;
  1232.  
  1233.     // If not set, default to the whether the full UI is shown.
  1234.     if ( null === $args->show_in_admin_bar )
  1235.         $args->show_in_admin_bar = true === $args->show_in_menu;
  1236.  
  1237.     // If not set, default to the setting for public.
  1238.     if ( null === $args->show_in_nav_menus )
  1239.         $args->show_in_nav_menus = $args->public;
  1240.  
  1241.     // If not set, default to true if not public, false if public.
  1242.     if ( null === $args->exclude_from_search )
  1243.         $args->exclude_from_search = !$args->public;
  1244.  
  1245.     // Back compat with quirky handling in version 3.0. #14122
  1246.     if ( empty( $args->capabilities ) && null === $args->map_meta_cap && in_array( $args->capability_type, array( 'post', 'page' ) ) )
  1247.         $args->map_meta_cap = true;
  1248.  
  1249.     // If not set, default to false.
  1250.     if ( null === $args->map_meta_cap )
  1251.         $args->map_meta_cap = false;
  1252.  
  1253.     $args->cap = get_post_type_capabilities( $args );
  1254.     unset( $args->capabilities );
  1255.  
  1256.     if ( is_array( $args->capability_type ) )
  1257.         $args->capability_type = $args->capability_type[0];
  1258.  
  1259.     if ( ! empty( $args->supports ) ) {
  1260.         add_post_type_support( $post_type, $args->supports );
  1261.         unset( $args->supports );
  1262.     } elseif ( false !== $args->supports ) {
  1263.         // Add default features
  1264.         add_post_type_support( $post_type, array( 'title', 'editor' ) );
  1265.     }
  1266.  
  1267.     if ( false !== $args->query_var && ! empty( $wp ) ) {
  1268.         if ( true === $args->query_var )
  1269.             $args->query_var = $post_type;
  1270.         else
  1271.             $args->query_var = sanitize_title_with_dashes( $args->query_var );
  1272.         $wp->add_query_var( $args->query_var );
  1273.     }
  1274.  
  1275.     if ( false !== $args->rewrite && ( is_admin() || '' != get_option( 'permalink_structure' ) ) ) {
  1276.         if ( ! is_array( $args->rewrite ) )
  1277.             $args->rewrite = array();
  1278.         if ( empty( $args->rewrite['slug'] ) )
  1279.             $args->rewrite['slug'] = $post_type;
  1280.         if ( ! isset( $args->rewrite['with_front'] ) )
  1281.             $args->rewrite['with_front'] = true;
  1282.         if ( ! isset( $args->rewrite['pages'] ) )
  1283.             $args->rewrite['pages'] = true;
  1284.         if ( ! isset( $args->rewrite['feeds'] ) || ! $args->has_archive )
  1285.             $args->rewrite['feeds'] = (bool) $args->has_archive;
  1286.         if ( ! isset( $args->rewrite['ep_mask'] ) ) {
  1287.             if ( isset( $args->permalink_epmask ) )
  1288.                 $args->rewrite['ep_mask'] = $args->permalink_epmask;
  1289.             else
  1290.                 $args->rewrite['ep_mask'] = EP_PERMALINK;
  1291.         }
  1292.  
  1293.         if ( $args->hierarchical )
  1294.             add_rewrite_tag( "%$post_type%", '(.+?)', $args->query_var ? "{$args->query_var}=" : "post_type=$post_type&pagename=" );
  1295.         else
  1296.             add_rewrite_tag( "%$post_type%", '([^/]+)', $args->query_var ? "{$args->query_var}=" : "post_type=$post_type&name=" );
  1297.  
  1298.         if ( $args->has_archive ) {
  1299.             $archive_slug = $args->has_archive === true ? $args->rewrite['slug'] : $args->has_archive;
  1300.             if ( $args->rewrite['with_front'] )
  1301.                 $archive_slug = substr( $wp_rewrite->front, 1 ) . $archive_slug;
  1302.             else
  1303.                 $archive_slug = $wp_rewrite->root . $archive_slug;
  1304.  
  1305.             add_rewrite_rule( "{$archive_slug}/?$", "index.php?post_type=$post_type", 'top' );
  1306.             if ( $args->rewrite['feeds'] && $wp_rewrite->feeds ) {
  1307.                 $feeds = '(' . trim( implode( '|', $wp_rewrite->feeds ) ) . ')';
  1308.                 add_rewrite_rule( "{$archive_slug}/feed/$feeds/?$", "index.php?post_type=$post_type" . '&feed=$matches[1]', 'top' );
  1309.                 add_rewrite_rule( "{$archive_slug}/$feeds/?$", "index.php?post_type=$post_type" . '&feed=$matches[1]', 'top' );
  1310.             }
  1311.             if ( $args->rewrite['pages'] )
  1312.                 add_rewrite_rule( "{$archive_slug}/{$wp_rewrite->pagination_base}/([0-9]{1,})/?$", "index.php?post_type=$post_type" . '&paged=$matches[1]', 'top' );
  1313.         }
  1314.  
  1315.         $permastruct_args = $args->rewrite;
  1316.         $permastruct_args['feed'] = $permastruct_args['feeds'];
  1317.         add_permastruct( $post_type, "{$args->rewrite['slug']}/%$post_type%", $permastruct_args );
  1318.     }
  1319.  
  1320.     if ( $args->register_meta_box_cb )
  1321.         add_action( 'add_meta_boxes_' . $post_type, $args->register_meta_box_cb, 10, 1 );
  1322.  
  1323.     $args->labels = get_post_type_labels( $args );
  1324.     $args->label = $args->labels->name;
  1325.  
  1326.     $wp_post_types[ $post_type ] = $args;
  1327.  
  1328.     add_action( 'future_' . $post_type, '_future_post_hook', 5, 2 );
  1329.  
  1330.     foreach ( $args->taxonomies as $taxonomy ) {
  1331.         register_taxonomy_for_object_type( $taxonomy, $post_type );
  1332.     }
  1333.  
  1334.     do_action( 'registered_post_type', $post_type, $args );
  1335.  
  1336.     return $args;
  1337. }
  1338.  
  1339. /**
  1340.  * Builds an object with all post type capabilities out of a post type object
  1341.  *
  1342.  * Post type capabilities use the 'capability_type' argument as a base, if the
  1343.  * capability is not set in the 'capabilities' argument array or if the
  1344.  * 'capabilities' argument is not supplied.
  1345.  *
  1346.  * The capability_type argument can optionally be registered as an array, with
  1347.  * the first value being singular and the second plural, e.g. array('story, 'stories')
  1348.  * Otherwise, an 's' will be added to the value for the plural form. After
  1349.  * registration, capability_type will always be a string of the singular value.
  1350.  *
  1351.  * By default, seven keys are accepted as part of the capabilities array:
  1352.  *
  1353.  * - edit_post, read_post, and delete_post are meta capabilities, which are then
  1354.  *   generally mapped to corresponding primitive capabilities depending on the
  1355.  *   context, which would be the post being edited/read/deleted and the user or
  1356.  *   role being checked. Thus these capabilities would generally not be granted
  1357.  *   directly to users or roles.
  1358.  *
  1359.  * - edit_posts - Controls whether objects of this post type can be edited.
  1360.  * - edit_others_posts - Controls whether objects of this type owned by other users
  1361.  *   can be edited. If the post type does not support an author, then this will
  1362.  *   behave like edit_posts.
  1363.  * - publish_posts - Controls publishing objects of this post type.
  1364.  * - read_private_posts - Controls whether private objects can be read.
  1365.  *
  1366.  * These four primitive capabilities are checked in core in various locations.
  1367.  * There are also seven other primitive capabilities which are not referenced
  1368.  * directly in core, except in map_meta_cap(), which takes the three aforementioned
  1369.  * meta capabilities and translates them into one or more primitive capabilities
  1370.  * that must then be checked against the user or role, depending on the context.
  1371.  *
  1372.  * - read - Controls whether objects of this post type can be read.
  1373.  * - delete_posts - Controls whether objects of this post type can be deleted.
  1374.  * - delete_private_posts - Controls whether private objects can be deleted.
  1375.  * - delete_published_posts - Controls whether published objects can be deleted.
  1376.  * - delete_others_posts - Controls whether objects owned by other users can be
  1377.  *   can be deleted. If the post type does not support an author, then this will
  1378.  *   behave like delete_posts.
  1379.  * - edit_private_posts - Controls whether private objects can be edited.
  1380.  * - edit_published_posts - Controls whether published objects can be edited.
  1381.  *
  1382.  * These additional capabilities are only used in map_meta_cap(). Thus, they are
  1383.  * only assigned by default if the post type is registered with the 'map_meta_cap'
  1384.  * argument set to true (default is false).
  1385.  *
  1386.  * @see map_meta_cap()
  1387.  * @since 3.0.0
  1388.  *
  1389.  * @param object $args Post type registration arguments
  1390.  * @return object object with all the capabilities as member variables
  1391.  */
  1392. function get_post_type_capabilities( $args ) {
  1393.     if ( ! is_array( $args->capability_type ) )
  1394.         $args->capability_type = array( $args->capability_type, $args->capability_type . 's' );
  1395.  
  1396.     // Singular base for meta capabilities, plural base for primitive capabilities.
  1397.     list( $singular_base, $plural_base ) = $args->capability_type;
  1398.  
  1399.     $default_capabilities = array(
  1400.         // Meta capabilities
  1401.         'edit_post'          => 'edit_'         . $singular_base,
  1402.         'read_post'          => 'read_'         . $singular_base,
  1403.         'delete_post'        => 'delete_'       . $singular_base,
  1404.         // Primitive capabilities used outside of map_meta_cap():
  1405.         'edit_posts'         => 'edit_'         . $plural_base,
  1406.         'edit_others_posts'  => 'edit_others_'  . $plural_base,
  1407.         'publish_posts'      => 'publish_'      . $plural_base,
  1408.         'read_private_posts' => 'read_private_' . $plural_base,
  1409.     );
  1410.  
  1411.     // Primitive capabilities used within map_meta_cap():
  1412.     if ( $args->map_meta_cap ) {
  1413.         $default_capabilities_for_mapping = array(
  1414.             'read'                   => 'read',
  1415.             'delete_posts'           => 'delete_'           . $plural_base,
  1416.             'delete_private_posts'   => 'delete_private_'   . $plural_base,
  1417.             'delete_published_posts' => 'delete_published_' . $plural_base,
  1418.             'delete_others_posts'    => 'delete_others_'    . $plural_base,
  1419.             'edit_private_posts'     => 'edit_private_'     . $plural_base,
  1420.             'edit_published_posts'   => 'edit_published_'   . $plural_base,
  1421.         );
  1422.         $default_capabilities = array_merge( $default_capabilities, $default_capabilities_for_mapping );
  1423.     }
  1424.  
  1425.     $capabilities = array_merge( $default_capabilities, $args->capabilities );
  1426.  
  1427.     // Post creation capability simply maps to edit_posts by default:
  1428.     if ( ! isset( $capabilities['create_posts'] ) )
  1429.         $capabilities['create_posts'] = $capabilities['edit_posts'];
  1430.  
  1431.     // Remember meta capabilities for future reference.
  1432.     if ( $args->map_meta_cap )
  1433.         _post_type_meta_capabilities( $capabilities );
  1434.  
  1435.     return (object) $capabilities;
  1436. }
  1437.  
  1438. /**
  1439.  * Stores or returns a list of post type meta caps for map_meta_cap().
  1440.  *
  1441.  * @since 3.1.0
  1442.  * @access private
  1443.  */
  1444. function _post_type_meta_capabilities( $capabilities = null ) {
  1445.     static $meta_caps = array();
  1446.     if ( null === $capabilities )
  1447.         return $meta_caps;
  1448.     foreach ( $capabilities as $core => $custom ) {
  1449.         if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ) ) )
  1450.             $meta_caps[ $custom ] = $core;
  1451.     }
  1452. }
  1453.  
  1454. /**
  1455.  * Builds an object with all post type labels out of a post type object
  1456.  *
  1457.  * Accepted keys of the label array in the post type object:
  1458.  * - name - general name for the post type, usually plural. The same and overridden by $post_type_object->label. Default is Posts/Pages
  1459.  * - singular_name - name for one object of this post type. Default is Post/Page
  1460.  * - add_new - Default is Add New for both hierarchical and non-hierarchical types. When internationalizing this string, please use a {@link http://codex.wordpress.org/I18n_for_WordPress_Developers#Disambiguation_by_context gettext context} matching your post type. Example: <code>_x('Add New', 'product');</code>
  1461.  * - add_new_item - Default is Add New Post/Add New Page
  1462.  * - edit_item - Default is Edit Post/Edit Page
  1463.  * - new_item - Default is New Post/New Page
  1464.  * - view_item - Default is View Post/View Page
  1465.  * - search_items - Default is Search Posts/Search Pages
  1466.  * - not_found - Default is No posts found/No pages found
  1467.  * - not_found_in_trash - Default is No posts found in Trash/No pages found in Trash
  1468.  * - parent_item_colon - This string isn't used on non-hierarchical types. In hierarchical ones the default is Parent Page:
  1469.  * - all_items - String for the submenu. Default is All Posts/All Pages
  1470.  * - menu_name - Default is the same as <code>name</code>
  1471.  *
  1472.  * Above, the first default value is for non-hierarchical post types (like posts) and the second one is for hierarchical post types (like pages).
  1473.  *
  1474.  * @since 3.0.0
  1475.  * @access private
  1476.  *
  1477.  * @param object $post_type_object
  1478.  * @return object object with all the labels as member variables
  1479.  */
  1480. function get_post_type_labels( $post_type_object ) {
  1481.     $nohier_vs_hier_defaults = array(
  1482.         'name' => array( _x('Posts', 'post type general name'), _x('Pages', 'post type general name') ),
  1483.         'singular_name' => array( _x('Post', 'post type singular name'), _x('Page', 'post type singular name') ),
  1484.         'add_new' => array( _x('Add New', 'post'), _x('Add New', 'page') ),
  1485.         'add_new_item' => array( __('Add New Post'), __('Add New Page') ),
  1486.         'edit_item' => array( __('Edit Post'), __('Edit Page') ),
  1487.         'new_item' => array( __('New Post'), __('New Page') ),
  1488.         'view_item' => array( __('View Post'), __('View Page') ),
  1489.         'search_items' => array( __('Search Posts'), __('Search Pages') ),
  1490.         'not_found' => array( __('No posts found.'), __('No pages found.') ),
  1491.         'not_found_in_trash' => array( __('No posts found in Trash.'), __('No pages found in Trash.') ),
  1492.         'parent_item_colon' => array( null, __('Parent Page:') ),
  1493.         'all_items' => array( __( 'All Posts' ), __( 'All Pages' ) )
  1494.     );
  1495.     $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
  1496.  
  1497.     $labels = _get_custom_object_labels( $post_type_object, $nohier_vs_hier_defaults );
  1498.  
  1499.     $post_type = $post_type_object->name;
  1500.     return apply_filters( "post_type_labels_{$post_type}", $labels );
  1501. }
  1502.  
  1503. /**
  1504.  * Builds an object with custom-something object (post type, taxonomy) labels out of a custom-something object
  1505.  *
  1506.  * @access private
  1507.  * @since 3.0.0
  1508.  */
  1509. function _get_custom_object_labels( $object, $nohier_vs_hier_defaults ) {
  1510.     $object->labels = (array) $object->labels;
  1511.  
  1512.     if ( isset( $object->label ) && empty( $object->labels['name'] ) )
  1513.         $object->labels['name'] = $object->label;
  1514.  
  1515.     if ( !isset( $object->labels['singular_name'] ) && isset( $object->labels['name'] ) )
  1516.         $object->labels['singular_name'] = $object->labels['name'];
  1517.  
  1518.     if ( ! isset( $object->labels['name_admin_bar'] ) )
  1519.         $object->labels['name_admin_bar'] = isset( $object->labels['singular_name'] ) ? $object->labels['singular_name'] : $object->name;
  1520.  
  1521.     if ( !isset( $object->labels['menu_name'] ) && isset( $object->labels['name'] ) )
  1522.         $object->labels['menu_name'] = $object->labels['name'];
  1523.  
  1524.     if ( !isset( $object->labels['all_items'] ) && isset( $object->labels['menu_name'] ) )
  1525.         $object->labels['all_items'] = $object->labels['menu_name'];
  1526.  
  1527.     foreach ( $nohier_vs_hier_defaults as $key => $value )
  1528.             $defaults[$key] = $object->hierarchical ? $value[1] : $value[0];
  1529.  
  1530.     $labels = array_merge( $defaults, $object->labels );
  1531.     return (object)$labels;
  1532. }
  1533.  
  1534. /**
  1535.  * Adds submenus for post types.
  1536.  *
  1537.  * @access private
  1538.  * @since 3.1.0
  1539.  */
  1540. function _add_post_type_submenus() {
  1541.     foreach ( get_post_types( array( 'show_ui' => true ) ) as $ptype ) {
  1542.         $ptype_obj = get_post_type_object( $ptype );
  1543.         // Submenus only.
  1544.         if ( ! $ptype_obj->show_in_menu || $ptype_obj->show_in_menu === true )
  1545.             continue;
  1546.         add_submenu_page( $ptype_obj->show_in_menu, $ptype_obj->labels->name, $ptype_obj->labels->all_items, $ptype_obj->cap->edit_posts, "edit.php?post_type=$ptype" );
  1547.     }
  1548. }
  1549. add_action( 'admin_menu', '_add_post_type_submenus' );
  1550.  
  1551. /**
  1552.  * Register support of certain features for a post type.
  1553.  *
  1554.  * All features are directly associated with a functional area of the edit screen, such as the
  1555.  * editor or a meta box: 'title', 'editor', 'comments', 'revisions', 'trackbacks', 'author',
  1556.  * 'excerpt', 'page-attributes', 'thumbnail', and 'custom-fields'.
  1557.  *
  1558.  * Additionally, the 'revisions' feature dictates whether the post type will store revisions,
  1559.  * and the 'comments' feature dictates whether the comments count will show on the edit screen.
  1560.  *
  1561.  * @since 3.0.0
  1562.  * @param string $post_type The post type for which to add the feature
  1563.  * @param string|array $feature the feature being added, can be an array of feature strings or a single string
  1564.  */
  1565. function add_post_type_support( $post_type, $feature ) {
  1566.     global $_wp_post_type_features;
  1567.  
  1568.     $features = (array) $feature;
  1569.     foreach ($features as $feature) {
  1570.         if ( func_num_args() == 2 )
  1571.             $_wp_post_type_features[$post_type][$feature] = true;
  1572.         else
  1573.             $_wp_post_type_features[$post_type][$feature] = array_slice( func_get_args(), 2 );
  1574.     }
  1575. }
  1576.  
  1577. /**
  1578.  * Remove support for a feature from a post type.
  1579.  *
  1580.  * @since 3.0.0
  1581.  * @param string $post_type The post type for which to remove the feature
  1582.  * @param string $feature The feature being removed
  1583.  */
  1584. function remove_post_type_support( $post_type, $feature ) {
  1585.     global $_wp_post_type_features;
  1586.  
  1587.     if ( isset( $_wp_post_type_features[$post_type][$feature] ) )
  1588.         unset( $_wp_post_type_features[$post_type][$feature] );
  1589. }
  1590.  
  1591. /**
  1592.  * Get all the post type features
  1593.  *
  1594.  * @since 3.4.0
  1595.  * @param string $post_type The post type
  1596.  * @return array
  1597.  */
  1598.  
  1599. function get_all_post_type_supports( $post_type ) {
  1600.     global $_wp_post_type_features;
  1601.  
  1602.     if ( isset( $_wp_post_type_features[$post_type] ) )
  1603.         return $_wp_post_type_features[$post_type];
  1604.  
  1605.     return array();
  1606. }
  1607.  
  1608. /**
  1609.  * Checks a post type's support for a given feature
  1610.  *
  1611.  * @since 3.0.0
  1612.  * @param string $post_type The post type being checked
  1613.  * @param string $feature the feature being checked
  1614.  * @return boolean
  1615.  */
  1616.  
  1617. function post_type_supports( $post_type, $feature ) {
  1618.     global $_wp_post_type_features;
  1619.  
  1620.     return ( isset( $_wp_post_type_features[$post_type][$feature] ) );
  1621. }
  1622.  
  1623. /**
  1624.  * Updates the post type for the post ID.
  1625.  *
  1626.  * The page or post cache will be cleaned for the post ID.
  1627.  *
  1628.  * @since 2.5.0
  1629.  *
  1630.  * @uses $wpdb
  1631.  *
  1632.  * @param int $post_id Post ID to change post type. Not actually optional.
  1633.  * @param string $post_type Optional, default is post. Supported values are 'post' or 'page' to
  1634.  *  name a few.
  1635.  * @return int Amount of rows changed. Should be 1 for success and 0 for failure.
  1636.  */
  1637. function set_post_type( $post_id = 0, $post_type = 'post' ) {
  1638.     global $wpdb;
  1639.  
  1640.     $post_type = sanitize_post_field('post_type', $post_type, $post_id, 'db');
  1641.     $return = $wpdb->update( $wpdb->posts, array('post_type' => $post_type), array('ID' => $post_id) );
  1642.  
  1643.     clean_post_cache( $post_id );
  1644.  
  1645.     return $return;
  1646. }
  1647.  
  1648. /**
  1649.  * Retrieve list of latest posts or posts matching criteria.
  1650.  *
  1651.  * The defaults are as follows:
  1652.  *     'numberposts' - Default is 5. Total number of posts to retrieve.
  1653.  *     'offset' - Default is 0. See {@link WP_Query::query()} for more.
  1654.  *     'category' - What category to pull the posts from.
  1655.  *     'orderby' - Default is 'post_date'. How to order the posts.
  1656.  *     'order' - Default is 'DESC'. The order to retrieve the posts.
  1657.  *     'include' - See {@link WP_Query::query()} for more.
  1658.  *     'exclude' - See {@link WP_Query::query()} for more.
  1659.  *     'meta_key' - See {@link WP_Query::query()} for more.
  1660.  *     'meta_value' - See {@link WP_Query::query()} for more.
  1661.  *     'post_type' - Default is 'post'. Can be 'page', or 'attachment' to name a few.
  1662.  *     'post_parent' - The parent of the post or post type.
  1663.  *     'post_status' - Default is 'publish'. Post status to retrieve.
  1664.  *
  1665.  * @since 1.2.0
  1666.  * @uses WP_Query::query() See for more default arguments and information.
  1667.  * @link http://codex.wordpress.org/Template_Tags/get_posts
  1668.  *
  1669.  * @param array $args Optional. Overrides defaults.
  1670.  * @return array List of posts.
  1671.  */
  1672. function get_posts($args = null) {
  1673.     $defaults = array(
  1674.         'numberposts' => 5, 'offset' => 0,
  1675.         'category' => 0, 'orderby' => 'post_date',
  1676.         'order' => 'DESC', 'include' => array(),
  1677.         'exclude' => array(), 'meta_key' => '',
  1678.         'meta_value' =>'', 'post_type' => 'post',
  1679.         'suppress_filters' => true
  1680.     );
  1681.  
  1682.     $r = wp_parse_args( $args, $defaults );
  1683.     if ( empty( $r['post_status'] ) )
  1684.         $r['post_status'] = ( 'attachment' == $r['post_type'] ) ? 'inherit' : 'publish';
  1685.     if ( ! empty($r['numberposts']) && empty($r['posts_per_page']) )
  1686.         $r['posts_per_page'] = $r['numberposts'];
  1687.     if ( ! empty($r['category']) )
  1688.         $r['cat'] = $r['category'];
  1689.     if ( ! empty($r['include']) ) {
  1690.         $incposts = wp_parse_id_list( $r['include'] );
  1691.         $r['posts_per_page'] = count($incposts);  // only the number of posts included
  1692.         $r['post__in'] = $incposts;
  1693.     } elseif ( ! empty($r['exclude']) )
  1694.         $r['post__not_in'] = wp_parse_id_list( $r['exclude'] );
  1695.  
  1696.     $r['ignore_sticky_posts'] = true;
  1697.     $r['no_found_rows'] = true;
  1698.  
  1699.     $get_posts = new WP_Query;
  1700.     return $get_posts->query($r);
  1701.  
  1702. }
  1703.  
  1704. //
  1705. // Post meta functions
  1706. //
  1707.  
  1708. /**
  1709.  * Add meta data field to a post.
  1710.  *
  1711.  * Post meta data is called "Custom Fields" on the Administration Screen.
  1712.  *
  1713.  * @since 1.5.0
  1714.  * @link http://codex.wordpress.org/Function_Reference/add_post_meta
  1715.  *
  1716.  * @param int $post_id Post ID.
  1717.  * @param string $meta_key Metadata name.
  1718.  * @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
  1719.  * @param bool $unique Optional, default is false. Whether the same key should not be added.
  1720.  * @return int|bool Meta ID on success, false on failure.
  1721.  */
  1722. function add_post_meta($post_id, $meta_key, $meta_value, $unique = false) {
  1723.     // make sure meta is added to the post, not a revision
  1724.     if ( $the_post = wp_is_post_revision($post_id) )
  1725.         $post_id = $the_post;
  1726.  
  1727.     return add_metadata('post', $post_id, $meta_key, $meta_value, $unique);
  1728. }
  1729.  
  1730. /**
  1731.  * Remove metadata matching criteria from a post.
  1732.  *
  1733.  * You can match based on the key, or key and value. Removing based on key and
  1734.  * value, will keep from removing duplicate metadata with the same key. It also
  1735.  * allows removing all metadata matching key, if needed.
  1736.  *
  1737.  * @since 1.5.0
  1738.  * @link http://codex.wordpress.org/Function_Reference/delete_post_meta
  1739.  *
  1740.  * @param int $post_id post ID
  1741.  * @param string $meta_key Metadata name.
  1742.  * @param mixed $meta_value Optional. Metadata value. Must be serializable if non-scalar.
  1743.  * @return bool True on success, false on failure.
  1744.  */
  1745. function delete_post_meta($post_id, $meta_key, $meta_value = '') {
  1746.     // make sure meta is added to the post, not a revision
  1747.     if ( $the_post = wp_is_post_revision($post_id) )
  1748.         $post_id = $the_post;
  1749.  
  1750.     return delete_metadata('post', $post_id, $meta_key, $meta_value);
  1751. }
  1752.  
  1753. /**
  1754.  * Retrieve post meta field for a post.
  1755.  *
  1756.  * @since 1.5.0
  1757.  * @link http://codex.wordpress.org/Function_Reference/get_post_meta
  1758.  *
  1759.  * @param int $post_id Post ID.
  1760.  * @param string $key Optional. The meta key to retrieve. By default, returns data for all keys.
  1761.  * @param bool $single Whether to return a single value.
  1762.  * @return mixed Will be an array if $single is false. Will be value of meta data field if $single
  1763.  *  is true.
  1764.  */
  1765. function get_post_meta($post_id, $key = '', $single = false) {
  1766.     return get_metadata('post', $post_id, $key, $single);
  1767. }
  1768.  
  1769. /**
  1770.  * Update post meta field based on post ID.
  1771.  *
  1772.  * Use the $prev_value parameter to differentiate between meta fields with the
  1773.  * same key and post ID.
  1774.  *
  1775.  * If the meta field for the post does not exist, it will be added.
  1776.  *
  1777.  * @since 1.5.0
  1778.  * @link http://codex.wordpress.org/Function_Reference/update_post_meta
  1779.  *
  1780.  * @param int $post_id Post ID.
  1781.  * @param string $meta_key Metadata key.
  1782.  * @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
  1783.  * @param mixed $prev_value Optional. Previous value to check before removing.
  1784.  * @return bool True on success, false on failure.
  1785.  */
  1786. function update_post_meta($post_id, $meta_key, $meta_value, $prev_value = '') {
  1787.     // make sure meta is added to the post, not a revision
  1788.     if ( $the_post = wp_is_post_revision($post_id) )
  1789.         $post_id = $the_post;
  1790.  
  1791.     return update_metadata('post', $post_id, $meta_key, $meta_value, $prev_value);
  1792. }
  1793.  
  1794. /**
  1795.  * Delete everything from post meta matching meta key.
  1796.  *
  1797.  * @since 2.3.0
  1798.  *
  1799.  * @param string $post_meta_key Key to search for when deleting.
  1800.  * @return bool Whether the post meta key was deleted from the database
  1801.  */
  1802. function delete_post_meta_by_key($post_meta_key) {
  1803.     return delete_metadata( 'post', null, $post_meta_key, '', true );
  1804. }
  1805.  
  1806. /**
  1807.  * Retrieve post meta fields, based on post ID.
  1808.  *
  1809.  * The post meta fields are retrieved from the cache where possible,
  1810.  * so the function is optimized to be called more than once.
  1811.  *
  1812.  * @since 1.2.0
  1813.  * @link http://codex.wordpress.org/Function_Reference/get_post_custom
  1814.  *
  1815.  * @param int $post_id Post ID.
  1816.  * @return array
  1817.  */
  1818. function get_post_custom( $post_id = 0 ) {
  1819.     $post_id = absint( $post_id );
  1820.     if ( ! $post_id )
  1821.         $post_id = get_the_ID();
  1822.  
  1823.     return get_post_meta( $post_id );
  1824. }
  1825.  
  1826. /**
  1827.  * Retrieve meta field names for a post.
  1828.  *
  1829.  * If there are no meta fields, then nothing (null) will be returned.
  1830.  *
  1831.  * @since 1.2.0
  1832.  * @link http://codex.wordpress.org/Function_Reference/get_post_custom_keys
  1833.  *
  1834.  * @param int $post_id post ID
  1835.  * @return array|null Either array of the keys, or null if keys could not be retrieved.
  1836.  */
  1837. function get_post_custom_keys( $post_id = 0 ) {
  1838.     $custom = get_post_custom( $post_id );
  1839.  
  1840.     if ( !is_array($custom) )
  1841.         return;
  1842.  
  1843.     if ( $keys = array_keys($custom) )
  1844.         return $keys;
  1845. }
  1846.  
  1847. /**
  1848.  * Retrieve values for a custom post field.
  1849.  *
  1850.  * The parameters must not be considered optional. All of the post meta fields
  1851.  * will be retrieved and only the meta field key values returned.
  1852.  *
  1853.  * @since 1.2.0
  1854.  * @link http://codex.wordpress.org/Function_Reference/get_post_custom_values
  1855.  *
  1856.  * @param string $key Meta field key.
  1857.  * @param int $post_id Post ID
  1858.  * @return array Meta field values.
  1859.  */
  1860. function get_post_custom_values( $key = '', $post_id = 0 ) {
  1861.     if ( !$key )
  1862.         return null;
  1863.  
  1864.     $custom = get_post_custom($post_id);
  1865.  
  1866.     return isset($custom[$key]) ? $custom[$key] : null;
  1867. }
  1868.  
  1869. /**
  1870.  * Check if post is sticky.
  1871.  *
  1872.  * Sticky posts should remain at the top of The Loop. If the post ID is not
  1873.  * given, then The Loop ID for the current post will be used.
  1874.  *
  1875.  * @since 2.7.0
  1876.  *
  1877.  * @param int $post_id Optional. Post ID.
  1878.  * @return bool Whether post is sticky.
  1879.  */
  1880. function is_sticky( $post_id = 0 ) {
  1881.     $post_id = absint( $post_id );
  1882.  
  1883.     if ( ! $post_id )
  1884.         $post_id = get_the_ID();
  1885.  
  1886.     $stickies = get_option( 'sticky_posts' );
  1887.  
  1888.     if ( ! is_array( $stickies ) )
  1889.         return false;
  1890.  
  1891.     if ( in_array( $post_id, $stickies ) )
  1892.         return true;
  1893.  
  1894.     return false;
  1895. }
  1896.  
  1897. /**
  1898.  * Sanitize every post field.
  1899.  *
  1900.  * If the context is 'raw', then the post object or array will get minimal santization of the int fields.
  1901.  *
  1902.  * @since 2.3.0
  1903.  * @uses sanitize_post_field() Used to sanitize the fields.
  1904.  *
  1905.  * @param object|WP_Post|array $post The Post Object or Array
  1906.  * @param string $context Optional, default is 'display'. How to sanitize post fields.
  1907.  * @return object|WP_Post|array The now sanitized Post Object or Array (will be the same type as $post)
  1908.  */
  1909. function sanitize_post($post, $context = 'display') {
  1910.     if ( is_object($post) ) {
  1911.         // Check if post already filtered for this context
  1912.         if ( isset($post->filter) && $context == $post->filter )
  1913.             return $post;
  1914.         if ( !isset($post->ID) )
  1915.             $post->ID = 0;
  1916.         foreach ( array_keys(get_object_vars($post)) as $field )
  1917.             $post->$field = sanitize_post_field($field, $post->$field, $post->ID, $context);
  1918.         $post->filter = $context;
  1919.     } else {
  1920.         // Check if post already filtered for this context
  1921.         if ( isset($post['filter']) && $context == $post['filter'] )
  1922.             return $post;
  1923.         if ( !isset($post['ID']) )
  1924.             $post['ID'] = 0;
  1925.         foreach ( array_keys($post) as $field )
  1926.             $post[$field] = sanitize_post_field($field, $post[$field], $post['ID'], $context);
  1927.         $post['filter'] = $context;
  1928.     }
  1929.     return $post;
  1930. }
  1931.  
  1932. /**
  1933.  * Sanitize post field based on context.
  1934.  *
  1935.  * Possible context values are:  'raw', 'edit', 'db', 'display', 'attribute' and 'js'. The
  1936.  * 'display' context is used by default. 'attribute' and 'js' contexts are treated like 'display'
  1937.  * when calling filters.
  1938.  *
  1939.  * @since 2.3.0
  1940.  * @uses apply_filters() Calls 'edit_$field' and '{$field_no_prefix}_edit_pre' passing $value and
  1941.  *  $post_id if $context == 'edit' and field name prefix == 'post_'.
  1942.  *
  1943.  * @uses apply_filters() Calls 'edit_post_$field' passing $value and $post_id if $context == 'db'.
  1944.  * @uses apply_filters() Calls 'pre_$field' passing $value if $context == 'db' and field name prefix == 'post_'.
  1945.  * @uses apply_filters() Calls '{$field}_pre' passing $value if $context == 'db' and field name prefix != 'post_'.
  1946.  *
  1947.  * @uses apply_filters() Calls '$field' passing $value, $post_id and $context if $context == anything
  1948.  *  other than 'raw', 'edit' and 'db' and field name prefix == 'post_'.
  1949.  * @uses apply_filters() Calls 'post_$field' passing $value if $context == anything other than 'raw',
  1950.  *  'edit' and 'db' and field name prefix != 'post_'.
  1951.  *
  1952.  * @param string $field The Post Object field name.
  1953.  * @param mixed $value The Post Object value.
  1954.  * @param int $post_id Post ID.
  1955.  * @param string $context How to sanitize post fields. Looks for 'raw', 'edit', 'db', 'display',
  1956.  *               'attribute' and 'js'.
  1957.  * @return mixed Sanitized value.
  1958.  */
  1959. function sanitize_post_field($field, $value, $post_id, $context) {
  1960.     $int_fields = array('ID', 'post_parent', 'menu_order');
  1961.     if ( in_array($field, $int_fields) )
  1962.         $value = (int) $value;
  1963.  
  1964.     // Fields which contain arrays of ints.
  1965.     $array_int_fields = array( 'ancestors' );
  1966.     if ( in_array($field, $array_int_fields) ) {
  1967.         $value = array_map( 'absint', $value);
  1968.         return $value;
  1969.     }
  1970.  
  1971.     if ( 'raw' == $context )
  1972.         return $value;
  1973.  
  1974.     $prefixed = false;
  1975.     if ( false !== strpos($field, 'post_') ) {
  1976.         $prefixed = true;
  1977.         $field_no_prefix = str_replace('post_', '', $field);
  1978.     }
  1979.  
  1980.     if ( 'edit' == $context ) {
  1981.         $format_to_edit = array('post_content', 'post_excerpt', 'post_title', 'post_password');
  1982.  
  1983.         if ( $prefixed ) {
  1984.             $value = apply_filters("edit_{$field}", $value, $post_id);
  1985.             // Old school
  1986.             $value = apply_filters("{$field_no_prefix}_edit_pre", $value, $post_id);
  1987.         } else {
  1988.             $value = apply_filters("edit_post_{$field}", $value, $post_id);
  1989.         }
  1990.  
  1991.         if ( in_array($field, $format_to_edit) ) {
  1992.             if ( 'post_content' == $field )
  1993.                 $value = format_to_edit($value, user_can_richedit());
  1994.             else
  1995.                 $value = format_to_edit($value);
  1996.         } else {
  1997.             $value = esc_attr($value);
  1998.         }
  1999.     } else if ( 'db' == $context ) {
  2000.         if ( $prefixed ) {
  2001.             $value = apply_filters("pre_{$field}", $value);
  2002.             $value = apply_filters("{$field_no_prefix}_save_pre", $value);
  2003.         } else {
  2004.             $value = apply_filters("pre_post_{$field}", $value);
  2005.             $value = apply_filters("{$field}_pre", $value);
  2006.         }
  2007.     } else {
  2008.         // Use display filters by default.
  2009.         if ( $prefixed )
  2010.             $value = apply_filters($field, $value, $post_id, $context);
  2011.         else
  2012.             $value = apply_filters("post_{$field}", $value, $post_id, $context);
  2013.     }
  2014.  
  2015.     if ( 'attribute' == $context )
  2016.         $value = esc_attr($value);
  2017.     else if ( 'js' == $context )
  2018.         $value = esc_js($value);
  2019.  
  2020.     return $value;
  2021. }
  2022.  
  2023. /**
  2024.  * Make a post sticky.
  2025.  *
  2026.  * Sticky posts should be displayed at the top of the front page.
  2027.  *
  2028.  * @since 2.7.0
  2029.  *
  2030.  * @param int $post_id Post ID.
  2031.  */
  2032. function stick_post($post_id) {
  2033.     $stickies = get_option('sticky_posts');
  2034.  
  2035.     if ( !is_array($stickies) )
  2036.         $stickies = array($post_id);
  2037.  
  2038.     if ( ! in_array($post_id, $stickies) )
  2039.         $stickies[] = $post_id;
  2040.  
  2041.     update_option('sticky_posts', $stickies);
  2042. }
  2043.  
  2044. /**
  2045.  * Unstick a post.
  2046.  *
  2047.  * Sticky posts should be displayed at the top of the front page.
  2048.  *
  2049.  * @since 2.7.0
  2050.  *
  2051.  * @param int $post_id Post ID.
  2052.  */
  2053. function unstick_post($post_id) {
  2054.     $stickies = get_option('sticky_posts');
  2055.  
  2056.     if ( !is_array($stickies) )
  2057.         return;
  2058.  
  2059.     if ( ! in_array($post_id, $stickies) )
  2060.         return;
  2061.  
  2062.     $offset = array_search($post_id, $stickies);
  2063.     if ( false === $offset )
  2064.         return;
  2065.  
  2066.     array_splice($stickies, $offset, 1);
  2067.  
  2068.     update_option('sticky_posts', $stickies);
  2069. }
  2070.  
  2071. /**
  2072.  * Count number of posts of a post type and if user has permissions to view.
  2073.  *
  2074.  * This function provides an efficient method of finding the amount of post's
  2075.  * type a blog has. Another method is to count the amount of items in
  2076.  * get_posts(), but that method has a lot of overhead with doing so. Therefore,
  2077.  * when developing for 2.5+, use this function instead.
  2078.  *
  2079.  * The $perm parameter checks for 'readable' value and if the user can read
  2080.  * private posts, it will display that for the user that is signed in.
  2081.  *
  2082.  * @link http://codex.wordpress.org/Template_Tags/wp_count_posts
  2083.  *
  2084.  * @since 2.5.0
  2085.  *
  2086.  * @param string $type Optional. Post type to retrieve count
  2087.  * @param string $perm Optional. 'readable' or empty.
  2088.  * @return object Number of posts for each status
  2089.  */
  2090. function wp_count_posts( $type = 'post', $perm = '' ) {
  2091.     global $wpdb;
  2092.  
  2093.     if ( ! post_type_exists( $type ) )
  2094.         return new stdClass;
  2095.  
  2096.     $user = wp_get_current_user();
  2097.  
  2098.     $cache_key = 'posts-' . $type;
  2099.  
  2100.     $query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s";
  2101.     if ( 'readable' == $perm && is_user_logged_in() ) {
  2102.         $post_type_object = get_post_type_object($type);
  2103.         if ( !current_user_can( $post_type_object->cap->read_private_posts ) ) {
  2104.             $cache_key .= '_' . $perm . '_' . $user->ID;
  2105.             $query .= " AND (post_status != 'private' OR ( post_author = '$user->ID' AND post_status = 'private' ))";
  2106.         }
  2107.     }
  2108.     $query .= ' GROUP BY post_status';
  2109.  
  2110.     $counts = wp_cache_get( $cache_key, 'counts' );
  2111.     if ( false === $counts ) {
  2112.         $results = (array) $wpdb->get_results( $wpdb->prepare( $query, $type ), ARRAY_A );
  2113.         $counts = array_fill_keys( get_post_stati(), 0 );
  2114.  
  2115.         foreach ( $results as $row )
  2116.             $counts[ $row['post_status'] ] = $row['num_posts'];
  2117.  
  2118.         $counts = (object) $counts;
  2119.         wp_cache_set( $cache_key, $counts, 'counts' );
  2120.     }
  2121.  
  2122.     /**
  2123.      * Modify returned post counts by status for the current post type.
  2124.      *
  2125.      * @since 3.7.0
  2126.      *
  2127.      * @param object $counts An object containing the current post_type's post counts by status.
  2128.      * @param string $type   The post type.
  2129.      * @param string $perm   The permission to determine if the posts are 'readable' by the current user.
  2130.      */
  2131.     return apply_filters( 'wp_count_posts', $counts, $type, $perm );
  2132. }
  2133.  
  2134. /**
  2135.  * Count number of attachments for the mime type(s).
  2136.  *
  2137.  * If you set the optional mime_type parameter, then an array will still be
  2138.  * returned, but will only have the item you are looking for. It does not give
  2139.  * you the number of attachments that are children of a post. You can get that
  2140.  * by counting the number of children that post has.
  2141.  *
  2142.  * @since 2.5.0
  2143.  *
  2144.  * @param string|array $mime_type Optional. Array or comma-separated list of MIME patterns.
  2145.  * @return array Number of posts for each mime type.
  2146.  */
  2147. function wp_count_attachments( $mime_type = '' ) {
  2148.     global $wpdb;
  2149.  
  2150.     $and = wp_post_mime_type_where( $mime_type );
  2151.     $count = $wpdb->get_results( "SELECT post_mime_type, COUNT( * ) AS num_posts FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' $and GROUP BY post_mime_type", ARRAY_A );
  2152.  
  2153.     $counts = array();
  2154.     foreach( (array) $count as $row ) {
  2155.         $counts[ $row['post_mime_type'] ] = $row['num_posts'];
  2156.     }
  2157.     $counts['trash'] = $wpdb->get_var( "SELECT COUNT( * ) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status = 'trash' $and");
  2158.  
  2159.     /**
  2160.      * Modify returned attachment counts by mime type.
  2161.      *
  2162.      * @since 3.7.0
  2163.      *
  2164.      * @param object $counts    An object containing the attachment counts by mime type.
  2165.      * @param string $mime_type The mime type pattern used to filter the attachments counted.
  2166.      */
  2167.     return apply_filters( 'wp_count_attachments', (object) $counts, $mime_type );
  2168. }
  2169.  
  2170. /**
  2171.  * Get default post mime types
  2172.  *
  2173.  * @since 2.9.0
  2174.  *
  2175.  * @return array
  2176.  */
  2177. function get_post_mime_types() {
  2178.     $post_mime_types = array(   //  array( adj, noun )
  2179.         'image' => array(__('Images'), __('Manage Images'), _n_noop('Image <span class="count">(%s)</span>', 'Images <span class="count">(%s)</span>')),
  2180.         'audio' => array(__('Audio'), __('Manage Audio'), _n_noop('Audio <span class="count">(%s)</span>', 'Audio <span class="count">(%s)</span>')),
  2181.         'video' => array(__('Video'), __('Manage Video'), _n_noop('Video <span class="count">(%s)</span>', 'Video <span class="count">(%s)</span>')),
  2182.     );
  2183.  
  2184.     return apply_filters('post_mime_types', $post_mime_types);
  2185. }
  2186.  
  2187. /**
  2188.  * Check a MIME-Type against a list.
  2189.  *
  2190.  * If the wildcard_mime_types parameter is a string, it must be comma separated
  2191.  * list. If the real_mime_types is a string, it is also comma separated to
  2192.  * create the list.
  2193.  *
  2194.  * @since 2.5.0
  2195.  *
  2196.  * @param string|array $wildcard_mime_types e.g. audio/mpeg or image (same as image/*) or
  2197.  *  flash (same as *flash*).
  2198.  * @param string|array $real_mime_types post_mime_type values
  2199.  * @return array array(wildcard=>array(real types))
  2200.  */
  2201. function wp_match_mime_types($wildcard_mime_types, $real_mime_types) {
  2202.     $matches = array();
  2203.     if ( is_string($wildcard_mime_types) )
  2204.         $wildcard_mime_types = array_map('trim', explode(',', $wildcard_mime_types));
  2205.     if ( is_string($real_mime_types) )
  2206.         $real_mime_types = array_map('trim', explode(',', $real_mime_types));
  2207.     $wild = '[-._a-z0-9]*';
  2208.     foreach ( (array) $wildcard_mime_types as $type ) {
  2209.         $type = str_replace('*', $wild, $type);
  2210.         $patternses[1][$type] = "^$type$";
  2211.         if ( false === strpos($type, '/') ) {
  2212.             $patternses[2][$type] = "^$type/";
  2213.             $patternses[3][$type] = $type;
  2214.         }
  2215.     }
  2216.     asort($patternses);
  2217.     foreach ( $patternses as $patterns )
  2218.         foreach ( $patterns as $type => $pattern )
  2219.             foreach ( (array) $real_mime_types as $real )
  2220.                 if ( preg_match("#$pattern#", $real) && ( empty($matches[$type]) || false === array_search($real, $matches[$type]) ) )
  2221.                     $matches[$type][] = $real;
  2222.     return $matches;
  2223. }
  2224.  
  2225. /**
  2226.  * Convert MIME types into SQL.
  2227.  *
  2228.  * @since 2.5.0
  2229.  *
  2230.  * @param string|array $post_mime_types List of mime types or comma separated string of mime types.
  2231.  * @param string $table_alias Optional. Specify a table alias, if needed.
  2232.  * @return string The SQL AND clause for mime searching.
  2233.  */
  2234. function wp_post_mime_type_where($post_mime_types, $table_alias = '') {
  2235.     $where = '';
  2236.     $wildcards = array('', '%', '%/%');
  2237.     if ( is_string($post_mime_types) )
  2238.         $post_mime_types = array_map('trim', explode(',', $post_mime_types));
  2239.     foreach ( (array) $post_mime_types as $mime_type ) {
  2240.         $mime_type = preg_replace('/\s/', '', $mime_type);
  2241.         $slashpos = strpos($mime_type, '/');
  2242.         if ( false !== $slashpos ) {
  2243.             $mime_group = preg_replace('/[^-*.a-zA-Z0-9]/', '', substr($mime_type, 0, $slashpos));
  2244.             $mime_subgroup = preg_replace('/[^-*.+a-zA-Z0-9]/', '', substr($mime_type, $slashpos + 1));
  2245.             if ( empty($mime_subgroup) )
  2246.                 $mime_subgroup = '*';
  2247.             else
  2248.                 $mime_subgroup = str_replace('/', '', $mime_subgroup);
  2249.             $mime_pattern = "$mime_group/$mime_subgroup";
  2250.         } else {
  2251.             $mime_pattern = preg_replace('/[^-*.a-zA-Z0-9]/', '', $mime_type);
  2252.             if ( false === strpos($mime_pattern, '*') )
  2253.                 $mime_pattern .= '/*';
  2254.         }
  2255.  
  2256.         $mime_pattern = preg_replace('/\*+/', '%', $mime_pattern);
  2257.  
  2258.         if ( in_array( $mime_type, $wildcards ) )
  2259.             return '';
  2260.  
  2261.         if ( false !== strpos($mime_pattern, '%') )
  2262.             $wheres[] = empty($table_alias) ? "post_mime_type LIKE '$mime_pattern'" : "$table_alias.post_mime_type LIKE '$mime_pattern'";
  2263.         else
  2264.             $wheres[] = empty($table_alias) ? "post_mime_type = '$mime_pattern'" : "$table_alias.post_mime_type = '$mime_pattern'";
  2265.     }
  2266.     if ( !empty($wheres) )
  2267.         $where = ' AND (' . join(' OR ', $wheres) . ') ';
  2268.     return $where;
  2269. }
  2270.  
  2271. /**
  2272.  * Trashes or deletes a post or page.
  2273.  *
  2274.  * When the post and page is permanently deleted, everything that is tied to it is deleted also.
  2275.  * This includes comments, post meta fields, and terms associated with the post.
  2276.  *
  2277.  * The post or page is moved to trash instead of permanently deleted unless trash is
  2278.  * disabled, item is already in the trash, or $force_delete is true.
  2279.  *
  2280.  * @since 1.0.0
  2281.  * @uses do_action() on 'delete_post' before deletion unless post type is 'attachment'.
  2282.  * @uses do_action() on 'deleted_post' after deletion unless post type is 'attachment'.
  2283.  * @uses wp_delete_attachment() if post type is 'attachment'.
  2284.  * @uses wp_trash_post() if item should be trashed.
  2285.  *
  2286.  * @param int $postid Post ID.
  2287.  * @param bool $force_delete Whether to bypass trash and force deletion. Defaults to false.
  2288.  * @return mixed False on failure
  2289.  */
  2290. function wp_delete_post( $postid = 0, $force_delete = false ) {
  2291.     global $wpdb;
  2292.  
  2293.     if ( !$post = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $postid)) )
  2294.         return $post;
  2295.  
  2296.     if ( !$force_delete && ( $post->post_type == 'post' || $post->post_type == 'page') && get_post_status( $postid ) != 'trash' && EMPTY_TRASH_DAYS )
  2297.             return wp_trash_post($postid);
  2298.  
  2299.     if ( $post->post_type == 'attachment' )
  2300.         return wp_delete_attachment( $postid, $force_delete );
  2301.  
  2302.     do_action('before_delete_post', $postid);
  2303.  
  2304.     delete_post_meta($postid,'_wp_trash_meta_status');
  2305.     delete_post_meta($postid,'_wp_trash_meta_time');
  2306.  
  2307.     wp_delete_object_term_relationships($postid, get_object_taxonomies($post->post_type));
  2308.  
  2309.     $parent_data = array( 'post_parent' => $post->post_parent );
  2310.     $parent_where = array( 'post_parent' => $postid );
  2311.  
  2312.     if ( is_post_type_hierarchical( $post->post_type ) ) {
  2313.         // Point children of this page to its parent, also clean the cache of affected children
  2314.         $children_query = $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_parent = %d AND post_type = %s", $postid, $post->post_type );
  2315.         $children = $wpdb->get_results( $children_query );
  2316.  
  2317.         $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => $post->post_type ) );
  2318.     }
  2319.  
  2320.     // Do raw query. wp_get_post_revisions() is filtered
  2321.     $revision_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'revision'", $postid ) );
  2322.     // Use wp_delete_post (via wp_delete_post_revision) again. Ensures any meta/misplaced data gets cleaned up.
  2323.     foreach ( $revision_ids as $revision_id )
  2324.         wp_delete_post_revision( $revision_id );
  2325.  
  2326.     // Point all attachments to this post up one level
  2327.     $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => 'attachment' ) );
  2328.  
  2329.     $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $postid ));
  2330.     foreach ( $comment_ids as $comment_id )
  2331.         wp_delete_comment( $comment_id, true );
  2332.  
  2333.     $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $postid ));
  2334.     foreach ( $post_meta_ids as $mid )
  2335.         delete_metadata_by_mid( 'post', $mid );
  2336.  
  2337.     do_action( 'delete_post', $postid );
  2338.     $wpdb->delete( $wpdb->posts, array( 'ID' => $postid ) );
  2339.     do_action( 'deleted_post', $postid );
  2340.  
  2341.     clean_post_cache( $post );
  2342.  
  2343.     if ( is_post_type_hierarchical( $post->post_type ) && $children ) {
  2344.         foreach ( $children as $child )
  2345.             clean_post_cache( $child );
  2346.     }
  2347.  
  2348.     wp_clear_scheduled_hook('publish_future_post', array( $postid ) );
  2349.  
  2350.     do_action('after_delete_post', $postid);
  2351.  
  2352.     return $post;
  2353. }
  2354.  
  2355. /**
  2356.  * Resets the page_on_front, show_on_front, and page_for_post settings when a
  2357.  * linked page is deleted or trashed.
  2358.  *
  2359.  * Also ensures the post is no longer sticky.
  2360.  *
  2361.  * @access private
  2362.  * @since 3.7.0
  2363.  * @param $post_id
  2364.  */
  2365. function _reset_front_page_settings_for_post( $post_id ) {
  2366.     $post = get_post( $post_id );
  2367.     if ( 'page' == $post->post_type ) {
  2368.         // If the page is defined in option page_on_front or post_for_posts,
  2369.         // adjust the corresponding options
  2370.         if ( get_option( 'page_on_front' ) == $post->ID ) {
  2371.             update_option( 'show_on_front', 'posts' );
  2372.             update_option( 'page_on_front', 0 );
  2373.         }
  2374.         if ( get_option( 'page_for_posts' ) == $post->ID ) {
  2375.             delete_option( 'page_for_posts', 0 );
  2376.         }
  2377.     }
  2378.     unstick_post( $post->ID );
  2379. }
  2380. add_action( 'before_delete_post', '_reset_front_page_settings_for_post' );
  2381. add_action( 'wp_trash_post',      '_reset_front_page_settings_for_post' );
  2382.  
  2383. /**
  2384.  * Moves a post or page to the Trash
  2385.  *
  2386.  * If trash is disabled, the post or page is permanently deleted.
  2387.  *
  2388.  * @since 2.9.0
  2389.  * @uses do_action() on 'trash_post' before trashing
  2390.  * @uses do_action() on 'trashed_post' after trashing
  2391.  * @uses wp_delete_post() if trash is disabled
  2392.  *
  2393.  * @param int $post_id Post ID.
  2394.  * @return mixed False on failure
  2395.  */
  2396. function wp_trash_post($post_id = 0) {
  2397.     if ( !EMPTY_TRASH_DAYS )
  2398.         return wp_delete_post($post_id, true);
  2399.  
  2400.     if ( !$post = get_post($post_id, ARRAY_A) )
  2401.         return $post;
  2402.  
  2403.     if ( $post['post_status'] == 'trash' )
  2404.         return false;
  2405.  
  2406.     do_action('wp_trash_post', $post_id);
  2407.  
  2408.     add_post_meta($post_id,'_wp_trash_meta_status', $post['post_status']);
  2409.     add_post_meta($post_id,'_wp_trash_meta_time', time());
  2410.  
  2411.     $post['post_status'] = 'trash';
  2412.     wp_insert_post($post);
  2413.  
  2414.     wp_trash_post_comments($post_id);
  2415.  
  2416.     do_action('trashed_post', $post_id);
  2417.  
  2418.     return $post;
  2419. }
  2420.  
  2421. /**
  2422.  * Restores a post or page from the Trash
  2423.  *
  2424.  * @since 2.9.0
  2425.  * @uses do_action() on 'untrash_post' before undeletion
  2426.  * @uses do_action() on 'untrashed_post' after undeletion
  2427.  *
  2428.  * @param int $post_id Post ID.
  2429.  * @return mixed False on failure
  2430.  */
  2431. function wp_untrash_post($post_id = 0) {
  2432.     if ( !$post = get_post($post_id, ARRAY_A) )
  2433.         return $post;
  2434.  
  2435.     if ( $post['post_status'] != 'trash' )
  2436.         return false;
  2437.  
  2438.     do_action('untrash_post', $post_id);
  2439.  
  2440.     $post_status = get_post_meta($post_id, '_wp_trash_meta_status', true);
  2441.  
  2442.     $post['post_status'] = $post_status;
  2443.  
  2444.     delete_post_meta($post_id, '_wp_trash_meta_status');
  2445.     delete_post_meta($post_id, '_wp_trash_meta_time');
  2446.  
  2447.     wp_insert_post($post);
  2448.  
  2449.     wp_untrash_post_comments($post_id);
  2450.  
  2451.     do_action('untrashed_post', $post_id);
  2452.  
  2453.     return $post;
  2454. }
  2455.  
  2456. /**
  2457.  * Moves comments for a post to the trash
  2458.  *
  2459.  * @since 2.9.0
  2460.  * @uses do_action() on 'trash_post_comments' before trashing
  2461.  * @uses do_action() on 'trashed_post_comments' after trashing
  2462.  *
  2463.  * @param int|object $post Post ID or object.
  2464.  * @return mixed False on failure
  2465.  */
  2466. function wp_trash_post_comments($post = null) {
  2467.     global $wpdb;
  2468.  
  2469.     $post = get_post($post);
  2470.     if ( empty($post) )
  2471.         return;
  2472.  
  2473.     $post_id = $post->ID;
  2474.  
  2475.     do_action('trash_post_comments', $post_id);
  2476.  
  2477.     $comments = $wpdb->get_results( $wpdb->prepare("SELECT comment_ID, comment_approved FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id) );
  2478.     if ( empty($comments) )
  2479.         return;
  2480.  
  2481.     // Cache current status for each comment
  2482.     $statuses = array();
  2483.     foreach ( $comments as $comment )
  2484.         $statuses[$comment->comment_ID] = $comment->comment_approved;
  2485.     add_post_meta($post_id, '_wp_trash_meta_comments_status', $statuses);
  2486.  
  2487.     // Set status for all comments to post-trashed
  2488.     $result = $wpdb->update($wpdb->comments, array('comment_approved' => 'post-trashed'), array('comment_post_ID' => $post_id));
  2489.  
  2490.     clean_comment_cache( array_keys($statuses) );
  2491.  
  2492.     do_action('trashed_post_comments', $post_id, $statuses);
  2493.  
  2494.     return $result;
  2495. }
  2496.  
  2497. /**
  2498.  * Restore comments for a post from the trash
  2499.  *
  2500.  * @since 2.9.0
  2501.  * @uses do_action() on 'untrash_post_comments' before trashing
  2502.  * @uses do_action() on 'untrashed_post_comments' after trashing
  2503.  *
  2504.  * @param int|object $post Post ID or object.
  2505.  * @return mixed False on failure
  2506.  */
  2507. function wp_untrash_post_comments($post = null) {
  2508.     global $wpdb;
  2509.  
  2510.     $post = get_post($post);
  2511.     if ( empty($post) )
  2512.         return;
  2513.  
  2514.     $post_id = $post->ID;
  2515.  
  2516.     $statuses = get_post_meta($post_id, '_wp_trash_meta_comments_status', true);
  2517.  
  2518.     if ( empty($statuses) )
  2519.         return true;
  2520.  
  2521.     do_action('untrash_post_comments', $post_id);
  2522.  
  2523.     // Restore each comment to its original status
  2524.     $group_by_status = array();
  2525.     foreach ( $statuses as $comment_id => $comment_status )
  2526.         $group_by_status[$comment_status][] = $comment_id;
  2527.  
  2528.     foreach ( $group_by_status as $status => $comments ) {
  2529.         // Sanity check. This shouldn't happen.
  2530.         if ( 'post-trashed' == $status )
  2531.             $status = '0';
  2532.         $comments_in = implode( "', '", $comments );
  2533.         $wpdb->query( "UPDATE $wpdb->comments SET comment_approved = '$status' WHERE comment_ID IN ('" . $comments_in . "')" );
  2534.     }
  2535.  
  2536.     clean_comment_cache( array_keys($statuses) );
  2537.  
  2538.     delete_post_meta($post_id, '_wp_trash_meta_comments_status');
  2539.  
  2540.     do_action('untrashed_post_comments', $post_id);
  2541. }
  2542.  
  2543. /**
  2544.  * Retrieve the list of categories for a post.
  2545.  *
  2546.  * Compatibility layer for themes and plugins. Also an easy layer of abstraction
  2547.  * away from the complexity of the taxonomy layer.
  2548.  *
  2549.  * @since 2.1.0
  2550.  *
  2551.  * @uses wp_get_object_terms() Retrieves the categories. Args details can be found here.
  2552.  *
  2553.  * @param int $post_id Optional. The Post ID.
  2554.  * @param array $args Optional. Overwrite the defaults.
  2555.  * @return array
  2556.  */
  2557. function wp_get_post_categories( $post_id = 0, $args = array() ) {
  2558.     $post_id = (int) $post_id;
  2559.  
  2560.     $defaults = array('fields' => 'ids');
  2561.     $args = wp_parse_args( $args, $defaults );
  2562.  
  2563.     $cats = wp_get_object_terms($post_id, 'category', $args);
  2564.     return $cats;
  2565. }
  2566.  
  2567. /**
  2568.  * Retrieve the tags for a post.
  2569.  *
  2570.  * There is only one default for this function, called 'fields' and by default
  2571.  * is set to 'all'. There are other defaults that can be overridden in
  2572.  * {@link wp_get_object_terms()}.
  2573.  *
  2574.  * @package WordPress
  2575.  * @subpackage Post
  2576.  * @since 2.3.0
  2577.  *
  2578.  * @uses wp_get_object_terms() Gets the tags for returning. Args can be found here
  2579.  *
  2580.  * @param int $post_id Optional. The Post ID
  2581.  * @param array $args Optional. Overwrite the defaults
  2582.  * @return array List of post tags.
  2583.  */
  2584. function wp_get_post_tags( $post_id = 0, $args = array() ) {
  2585.     return wp_get_post_terms( $post_id, 'post_tag', $args);
  2586. }
  2587.  
  2588. /**
  2589.  * Retrieve the terms for a post.
  2590.  *
  2591.  * There is only one default for this function, called 'fields' and by default
  2592.  * is set to 'all'. There are other defaults that can be overridden in
  2593.  * {@link wp_get_object_terms()}.
  2594.  *
  2595.  * @package WordPress
  2596.  * @subpackage Post
  2597.  * @since 2.8.0
  2598.  *
  2599.  * @uses wp_get_object_terms() Gets the tags for returning. Args can be found here
  2600.  *
  2601.  * @param int $post_id Optional. The Post ID
  2602.  * @param string $taxonomy The taxonomy for which to retrieve terms. Defaults to post_tag.
  2603.  * @param array $args Optional. Overwrite the defaults
  2604.  * @return array List of post tags.
  2605.  */
  2606. function wp_get_post_terms( $post_id = 0, $taxonomy = 'post_tag', $args = array() ) {
  2607.     $post_id = (int) $post_id;
  2608.  
  2609.     $defaults = array('fields' => 'all');
  2610.     $args = wp_parse_args( $args, $defaults );
  2611.  
  2612.     $tags = wp_get_object_terms($post_id, $taxonomy, $args);
  2613.  
  2614.     return $tags;
  2615. }
  2616.  
  2617. /**
  2618.  * Retrieve number of recent posts.
  2619.  *
  2620.  * @since 1.0.0
  2621.  * @uses wp_parse_args()
  2622.  * @uses get_posts()
  2623.  *
  2624.  * @param string $deprecated Deprecated.
  2625.  * @param array $args Optional. Overrides defaults.
  2626.  * @param string $output Optional.
  2627.  * @return unknown.
  2628.  */
  2629. function wp_get_recent_posts( $args = array(), $output = ARRAY_A ) {
  2630.  
  2631.     if ( is_numeric( $args ) ) {
  2632.         _deprecated_argument( __FUNCTION__, '3.1', __( 'Passing an integer number of posts is deprecated. Pass an array of arguments instead.' ) );
  2633.         $args = array( 'numberposts' => absint( $args ) );
  2634.     }
  2635.  
  2636.     // Set default arguments
  2637.     $defaults = array(
  2638.         'numberposts' => 10, 'offset' => 0,
  2639.         'category' => 0, 'orderby' => 'post_date',
  2640.         'order' => 'DESC', 'include' => '',
  2641.         'exclude' => '', 'meta_key' => '',
  2642.         'meta_value' =>'', 'post_type' => 'post', 'post_status' => 'draft, publish, future, pending, private',
  2643.         'suppress_filters' => true
  2644.     );
  2645.  
  2646.     $r = wp_parse_args( $args, $defaults );
  2647.  
  2648.     $results = get_posts( $r );
  2649.  
  2650.     // Backward compatibility. Prior to 3.1 expected posts to be returned in array
  2651.     if ( ARRAY_A == $output ){
  2652.         foreach( $results as $key => $result ) {
  2653.             $results[$key] = get_object_vars( $result );
  2654.         }
  2655.         return $results ? $results : array();
  2656.     }
  2657.  
  2658.     return $results ? $results : false;
  2659.  
  2660. }
  2661.  
  2662. /**
  2663.  * Insert or update a post.
  2664.  *
  2665.  * If the $postarr parameter has 'ID' set to a value, then post will be updated.
  2666.  *
  2667.  * You can set the post date manually, by setting the values for 'post_date'
  2668.  * and 'post_date_gmt' keys. You can close the comments or open the comments by
  2669.  * setting the value for 'comment_status' key.
  2670.  *
  2671.  * @global wpdb $wpdb    WordPress database abstraction object.
  2672.  *
  2673.  * @since 1.0.0
  2674.  *
  2675.  * @param array $postarr {
  2676.  *     An array of elements that make up a post to update or insert.
  2677.  *
  2678.  *     @type int    'ID'                    The post ID. If equal to something other than 0, the post with that ID will
  2679.  *                                          be updated. Default 0.
  2680.  *     @type string 'post_status'           The post status. Default 'draft'.
  2681.  *     @type string 'post_type'             The post type. Default 'post'.
  2682.  *     @type int    'post_author'           The ID of the user who added the post. Default the current user ID.
  2683.  *     @type bool   'ping_status'           Whether the post can accept pings. Default value of 'default_ping_status' option.
  2684.  *     @type int    'post_parent'           Set this for the post it belongs to, if any. Default 0.
  2685.  *     @type int    'menu_order'            The order it is displayed. Default 0.
  2686.  *     @type string 'to_ping'               Space or carriage return-separated list of URLs to ping. Default empty string.
  2687.  *     @type string 'pinged'                Space or carriage return-separated list of URLs that have been pinged.
  2688.  *                                          Default empty string.
  2689.  *     @type string 'post_password          The password to access the post. Default empty string.
  2690.  *     @type string 'guid'                  Global Unique ID for referencing the post.
  2691.  *     @type string 'post_content_filtered' The filtered post content. Default empty string.
  2692.  *     @type string 'post_excerpt'          The post excerpt. Default empty string.
  2693.  * }
  2694.  * @param bool  $wp_error Optional. Allow return of WP_Error on failure.
  2695.  * @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
  2696.  */
  2697. function wp_insert_post( $postarr, $wp_error = false ) {
  2698.     global $wpdb;
  2699.  
  2700.     $user_id = get_current_user_id();
  2701.  
  2702.     $defaults = array('post_status' => 'draft', 'post_type' => 'post', 'post_author' => $user_id,
  2703.         'ping_status' => get_option('default_ping_status'), 'post_parent' => 0,
  2704.         'menu_order' => 0, 'to_ping' =>  '', 'pinged' => '', 'post_password' => '',
  2705.         'guid' => '', 'post_content_filtered' => '', 'post_excerpt' => '', 'import_id' => 0,
  2706.         'post_content' => '', 'post_title' => '');
  2707.  
  2708.     $postarr = wp_parse_args($postarr, $defaults);
  2709.  
  2710.     unset( $postarr[ 'filter' ] );
  2711.  
  2712.     $postarr = sanitize_post($postarr, 'db');
  2713.  
  2714.     // export array as variables
  2715.     extract($postarr, EXTR_SKIP);
  2716.  
  2717.     // Are we updating or creating?
  2718.     $post_ID = 0;
  2719.     $update = false;
  2720.     if ( ! empty( $ID ) ) {
  2721.         $update = true;
  2722.  
  2723.         // Get the post ID and GUID
  2724.         $post_ID = $ID;
  2725.         $post_before = get_post( $post_ID );
  2726.         if ( is_null( $post_before ) ) {
  2727.             if ( $wp_error )
  2728.                 return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
  2729.             return 0;
  2730.         }
  2731.  
  2732.         $guid = get_post_field( 'guid', $post_ID );
  2733.         $previous_status = get_post_field('post_status', $ID);
  2734.     } else {
  2735.         $previous_status = 'new';
  2736.     }
  2737.  
  2738.     $maybe_empty = ! $post_content && ! $post_title && ! $post_excerpt && post_type_supports( $post_type, 'editor' )
  2739.         && post_type_supports( $post_type, 'title' ) && post_type_supports( $post_type, 'excerpt' );
  2740.  
  2741.     if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
  2742.         if ( $wp_error )
  2743.             return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
  2744.         else
  2745.             return 0;
  2746.     }
  2747.  
  2748.     if ( empty($post_type) )
  2749.         $post_type = 'post';
  2750.  
  2751.     if ( empty($post_status) )
  2752.         $post_status = 'draft';
  2753.  
  2754.     if ( !empty($post_category) )
  2755.         $post_category = array_filter($post_category); // Filter out empty terms
  2756.  
  2757.     // Make sure we set a valid category.
  2758.     if ( empty($post_category) || 0 == count($post_category) || !is_array($post_category) ) {
  2759.         // 'post' requires at least one category.
  2760.         if ( 'post' == $post_type && 'auto-draft' != $post_status )
  2761.             $post_category = array( get_option('default_category') );
  2762.         else
  2763.             $post_category = array();
  2764.     }
  2765.  
  2766.     if ( empty($post_author) )
  2767.         $post_author = $user_id;
  2768.  
  2769.     // Don't allow contributors to set the post slug for pending review posts
  2770.     if ( 'pending' == $post_status && !current_user_can( 'publish_posts' ) )
  2771.         $post_name = '';
  2772.  
  2773.     // Create a valid post name. Drafts and pending posts are allowed to have an empty
  2774.     // post name.
  2775.     if ( empty($post_name) ) {
  2776.         if ( !in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) )
  2777.             $post_name = sanitize_title($post_title);
  2778.         else
  2779.             $post_name = '';
  2780.     } else {
  2781.         // On updates, we need to check to see if it's using the old, fixed sanitization context.
  2782.         $check_name = sanitize_title( $post_name, '', 'old-save' );
  2783.         if ( $update && strtolower( urlencode( $post_name ) ) == $check_name && get_post_field( 'post_name', $ID ) == $check_name )
  2784.             $post_name = $check_name;
  2785.         else // new post, or slug has changed.
  2786.             $post_name = sanitize_title($post_name);
  2787.     }
  2788.  
  2789.     // If the post date is empty (due to having been new or a draft) and status is not 'draft' or 'pending', set date to now
  2790.     if ( empty($post_date) || '0000-00-00 00:00:00' == $post_date )
  2791.         $post_date = current_time('mysql');
  2792.  
  2793.         // validate the date
  2794.         $mm = substr( $post_date, 5, 2 );
  2795.         $jj = substr( $post_date, 8, 2 );
  2796.         $aa = substr( $post_date, 0, 4 );
  2797.         $valid_date = wp_checkdate( $mm, $jj, $aa, $post_date );
  2798.         if ( !$valid_date ) {
  2799.             if ( $wp_error )
  2800.                 return new WP_Error( 'invalid_date', __( 'Whoops, the provided date is invalid.' ) );
  2801.             else
  2802.                 return 0;
  2803.         }
  2804.  
  2805.     if ( empty($post_date_gmt) || '0000-00-00 00:00:00' == $post_date_gmt ) {
  2806.         if ( !in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) )
  2807.             $post_date_gmt = get_gmt_from_date($post_date);
  2808.         else
  2809.             $post_date_gmt = '0000-00-00 00:00:00';
  2810.     }
  2811.  
  2812.     if ( $update || '0000-00-00 00:00:00' == $post_date ) {
  2813.         $post_modified     = current_time( 'mysql' );
  2814.         $post_modified_gmt = current_time( 'mysql', 1 );
  2815.     } else {
  2816.         $post_modified     = $post_date;
  2817.         $post_modified_gmt = $post_date_gmt;
  2818.     }
  2819.  
  2820.     if ( 'publish' == $post_status ) {
  2821.         $now = gmdate('Y-m-d H:i:59');
  2822.         if ( mysql2date('U', $post_date_gmt, false) > mysql2date('U', $now, false) )
  2823.             $post_status = 'future';
  2824.     } elseif( 'future' == $post_status ) {
  2825.         $now = gmdate('Y-m-d H:i:59');
  2826.         if ( mysql2date('U', $post_date_gmt, false) <= mysql2date('U', $now, false) )
  2827.             $post_status = 'publish';
  2828.     }
  2829.  
  2830.     if ( empty($comment_status) ) {
  2831.         if ( $update )
  2832.             $comment_status = 'closed';
  2833.         else
  2834.             $comment_status = get_option('default_comment_status');
  2835.     }
  2836.     if ( empty($ping_status) )
  2837.         $ping_status = get_option('default_ping_status');
  2838.  
  2839.     if ( isset($to_ping) )
  2840.         $to_ping = sanitize_trackback_urls( $to_ping );
  2841.     else
  2842.         $to_ping = '';
  2843.  
  2844.     if ( ! isset($pinged) )
  2845.         $pinged = '';
  2846.  
  2847.     if ( isset($post_parent) )
  2848.         $post_parent = (int) $post_parent;
  2849.     else
  2850.         $post_parent = 0;
  2851.  
  2852.     // Check the post_parent to see if it will cause a hierarchy loop
  2853.     $post_parent = apply_filters( 'wp_insert_post_parent', $post_parent, $post_ID, compact( array_keys( $postarr ) ), $postarr );
  2854.  
  2855.     if ( isset($menu_order) )
  2856.         $menu_order = (int) $menu_order;
  2857.     else
  2858.         $menu_order = 0;
  2859.  
  2860.     if ( !isset($post_password) || 'private' == $post_status )
  2861.         $post_password = '';
  2862.  
  2863.     $post_name = wp_unique_post_slug($post_name, $post_ID, $post_status, $post_type, $post_parent);
  2864.  
  2865.     // expected_slashed (everything!)
  2866.     $data = compact( array( 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_content_filtered', 'post_title', 'post_excerpt', 'post_status', 'post_type', 'comment_status', 'ping_status', 'post_password', 'post_name', 'to_ping', 'pinged', 'post_modified', 'post_modified_gmt', 'post_parent', 'menu_order', 'guid' ) );
  2867.     $data = apply_filters('wp_insert_post_data', $data, $postarr);
  2868.     $data = wp_unslash( $data );
  2869.     $where = array( 'ID' => $post_ID );
  2870.  
  2871.     if ( $update ) {
  2872.         do_action( 'pre_post_update', $post_ID, $data );
  2873.         if ( false === $wpdb->update( $wpdb->posts, $data, $where ) ) {
  2874.             if ( $wp_error )
  2875.                 return new WP_Error('db_update_error', __('Could not update post in the database'), $wpdb->last_error);
  2876.             else
  2877.                 return 0;
  2878.         }
  2879.     } else {
  2880.         if ( isset($post_mime_type) )
  2881.             $data['post_mime_type'] = wp_unslash( $post_mime_type ); // This isn't in the update
  2882.         // If there is a suggested ID, use it if not already present
  2883.         if ( !empty($import_id) ) {
  2884.             $import_id = (int) $import_id;
  2885.             if ( ! $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id) ) ) {
  2886.                 $data['ID'] = $import_id;
  2887.             }
  2888.         }
  2889.         if ( false === $wpdb->insert( $wpdb->posts, $data ) ) {
  2890.             if ( $wp_error )
  2891.                 return new WP_Error('db_insert_error', __('Could not insert post into the database'), $wpdb->last_error);
  2892.             else
  2893.                 return 0;
  2894.         }
  2895.         $post_ID = (int) $wpdb->insert_id;
  2896.  
  2897.         // use the newly generated $post_ID
  2898.         $where = array( 'ID' => $post_ID );
  2899.     }
  2900.  
  2901.     if ( empty($data['post_name']) && !in_array( $data['post_status'], array( 'draft', 'pending', 'auto-draft' ) ) ) {
  2902.         $data['post_name'] = sanitize_title($data['post_title'], $post_ID);
  2903.         $wpdb->update( $wpdb->posts, array( 'post_name' => $data['post_name'] ), $where );
  2904.     }
  2905.  
  2906.     if ( is_object_in_taxonomy($post_type, 'category') )
  2907.         wp_set_post_categories( $post_ID, $post_category );
  2908.  
  2909.     if ( isset( $tags_input ) && is_object_in_taxonomy($post_type, 'post_tag') )
  2910.         wp_set_post_tags( $post_ID, $tags_input );
  2911.  
  2912.     // new-style support for all custom taxonomies
  2913.     if ( !empty($tax_input) ) {
  2914.         foreach ( $tax_input as $taxonomy => $tags ) {
  2915.             $taxonomy_obj = get_taxonomy($taxonomy);
  2916.             if ( is_array($tags) ) // array = hierarchical, string = non-hierarchical.
  2917.                 $tags = array_filter($tags);
  2918.             if ( current_user_can($taxonomy_obj->cap->assign_terms) )
  2919.                 wp_set_post_terms( $post_ID, $tags, $taxonomy );
  2920.         }
  2921.     }
  2922.  
  2923.     $current_guid = get_post_field( 'guid', $post_ID );
  2924.  
  2925.     // Set GUID
  2926.     if ( !$update && '' == $current_guid )
  2927.         $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post_ID ) ), $where );
  2928.  
  2929.     clean_post_cache( $post_ID );
  2930.  
  2931.     $post = get_post($post_ID);
  2932.  
  2933.     if ( !empty($page_template) && 'page' == $data['post_type'] ) {
  2934.         $post->page_template = $page_template;
  2935.         $page_templates = wp_get_theme()->get_page_templates();
  2936.         if ( 'default' != $page_template && ! isset( $page_templates[ $page_template ] ) ) {
  2937.             if ( $wp_error )
  2938.                 return new WP_Error('invalid_page_template', __('The page template is invalid.'));
  2939.             else
  2940.                 return 0;
  2941.         }
  2942.         update_post_meta($post_ID, '_wp_page_template',  $page_template);
  2943.     }
  2944.  
  2945.     wp_transition_post_status($data['post_status'], $previous_status, $post);
  2946.  
  2947.     if ( $update ) {
  2948.         do_action('edit_post', $post_ID, $post);
  2949.         $post_after = get_post($post_ID);
  2950.         do_action( 'post_updated', $post_ID, $post_after, $post_before);
  2951.     }
  2952.  
  2953.     do_action( "save_post_{$post->post_type}", $post_ID, $post, $update );
  2954.     do_action( 'save_post', $post_ID, $post, $update );
  2955.     do_action( 'wp_insert_post', $post_ID, $post, $update );
  2956.  
  2957.     return $post_ID;
  2958. }
  2959.  
  2960. /**
  2961.  * Update a post with new post data.
  2962.  *
  2963.  * The date does not have to be set for drafts. You can set the date and it will
  2964.  * not be overridden.
  2965.  *
  2966.  * @since 1.0.0
  2967.  *
  2968.  * @param array|object $postarr Post data. Arrays are expected to be escaped, objects are not.
  2969.  * @param bool $wp_error Optional. Allow return of WP_Error on failure.
  2970.  * @return int|WP_Error The value 0 or WP_Error on failure. The post ID on success.
  2971.  */
  2972. function wp_update_post( $postarr = array(), $wp_error = false ) {
  2973.     if ( is_object($postarr) ) {
  2974.         // non-escaped post was passed
  2975.         $postarr = get_object_vars($postarr);
  2976.         $postarr = wp_slash($postarr);
  2977.     }
  2978.  
  2979.     // First, get all of the original fields
  2980.     $post = get_post($postarr['ID'], ARRAY_A);
  2981.  
  2982.     if ( is_null( $post ) ) {
  2983.         if ( $wp_error )
  2984.             return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
  2985.         return 0;
  2986.     }
  2987.  
  2988.     // Escape data pulled from DB.
  2989.     $post = wp_slash($post);
  2990.  
  2991.     // Passed post category list overwrites existing category list if not empty.
  2992.     if ( isset($postarr['post_category']) && is_array($postarr['post_category'])
  2993.              && 0 != count($postarr['post_category']) )
  2994.         $post_cats = $postarr['post_category'];
  2995.     else
  2996.         $post_cats = $post['post_category'];
  2997.  
  2998.     // Drafts shouldn't be assigned a date unless explicitly done so by the user
  2999.     if ( isset( $post['post_status'] ) && in_array($post['post_status'], array('draft', 'pending', 'auto-draft')) && empty($postarr['edit_date']) &&
  3000.              ('0000-00-00 00:00:00' == $post['post_date_gmt']) )
  3001.         $clear_date = true;
  3002.     else
  3003.         $clear_date = false;
  3004.  
  3005.     // Merge old and new fields with new fields overwriting old ones.
  3006.     $postarr = array_merge($post, $postarr);
  3007.     $postarr['post_category'] = $post_cats;
  3008.     if ( $clear_date ) {
  3009.         $postarr['post_date'] = current_time('mysql');
  3010.         $postarr['post_date_gmt'] = '';
  3011.     }
  3012.  
  3013.     if ($postarr['post_type'] == 'attachment')
  3014.         return wp_insert_attachment($postarr);
  3015.  
  3016.     return wp_insert_post( $postarr, $wp_error );
  3017. }
  3018.  
  3019. /**
  3020.  * Publish a post by transitioning the post status.
  3021.  *
  3022.  * @since 2.1.0
  3023.  * @uses $wpdb
  3024.  * @uses do_action() Calls 'edit_post', 'save_post_{$post_type}', 'save_post' and 'wp_insert_post' on post_id and post data.
  3025.  *
  3026.  * @param int|object $post Post ID or object.
  3027.  */
  3028. function wp_publish_post( $post ) {
  3029.     global $wpdb;
  3030.  
  3031.     if ( ! $post = get_post( $post ) )
  3032.         return;
  3033.  
  3034.     if ( 'publish' == $post->post_status )
  3035.         return;
  3036.  
  3037.     $wpdb->update( $wpdb->posts, array( 'post_status' => 'publish' ), array( 'ID' => $post->ID ) );
  3038.  
  3039.     clean_post_cache( $post->ID );
  3040.  
  3041.     $old_status = $post->post_status;
  3042.     $post->post_status = 'publish';
  3043.     wp_transition_post_status( 'publish', $old_status, $post );
  3044.  
  3045.     do_action( 'edit_post', $post->ID, $post );
  3046.     do_action( "save_post_{$post->post_type}", $post->ID, $post, true );
  3047.     do_action( 'save_post', $post->ID, $post, true );
  3048.     do_action( 'wp_insert_post', $post->ID, $post, true );
  3049. }
  3050.  
  3051. /**
  3052.  * Publish future post and make sure post ID has future post status.
  3053.  *
  3054.  * Invoked by cron 'publish_future_post' event. This safeguard prevents cron
  3055.  * from publishing drafts, etc.
  3056.  *
  3057.  * @since 2.5.0
  3058.  *
  3059.  * @param int $post_id Post ID.
  3060.  * @return null Nothing is returned. Which can mean that no action is required or post was published.
  3061.  */
  3062. function check_and_publish_future_post($post_id) {
  3063.  
  3064.     $post = get_post($post_id);
  3065.  
  3066.     if ( empty($post) )
  3067.         return;
  3068.  
  3069.     if ( 'future' != $post->post_status )
  3070.         return;
  3071.  
  3072.     $time = strtotime( $post->post_date_gmt . ' GMT' );
  3073.  
  3074.     if ( $time > time() ) { // Uh oh, someone jumped the gun!
  3075.         wp_clear_scheduled_hook( 'publish_future_post', array( $post_id ) ); // clear anything else in the system
  3076.         wp_schedule_single_event( $time, 'publish_future_post', array( $post_id ) );
  3077.         return;
  3078.     }
  3079.  
  3080.     return wp_publish_post($post_id);
  3081. }
  3082.  
  3083. /**
  3084.  * Computes a unique slug for the post, when given the desired slug and some post details.
  3085.  *
  3086.  * @since 2.8.0
  3087.  *
  3088.  * @global wpdb $wpdb
  3089.  * @global WP_Rewrite $wp_rewrite
  3090.  * @param string $slug the desired slug (post_name)
  3091.  * @param integer $post_ID
  3092.  * @param string $post_status no uniqueness checks are made if the post is still draft or pending
  3093.  * @param string $post_type
  3094.  * @param integer $post_parent
  3095.  * @return string unique slug for the post, based on $post_name (with a -1, -2, etc. suffix)
  3096.  */
  3097. function wp_unique_post_slug( $slug, $post_ID, $post_status, $post_type, $post_parent ) {
  3098.     if ( in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) || ( 'inherit' == $post_status && 'revision' == $post_type ) )
  3099.         return $slug;
  3100.  
  3101.     global $wpdb, $wp_rewrite;
  3102.  
  3103.     $original_slug = $slug;
  3104.  
  3105.     $feeds = $wp_rewrite->feeds;
  3106.     if ( ! is_array( $feeds ) )
  3107.         $feeds = array();
  3108.  
  3109.     $hierarchical_post_types = get_post_types( array('hierarchical' => true) );
  3110.     if ( 'attachment' == $post_type ) {
  3111.         // Attachment slugs must be unique across all types.
  3112.         $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND ID != %d LIMIT 1";
  3113.         $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_ID ) );
  3114.  
  3115.         if ( $post_name_check || in_array( $slug, $feeds ) || apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', false, $slug ) ) {
  3116.             $suffix = 2;
  3117.             do {
  3118.                 $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
  3119.                 $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_ID ) );
  3120.                 $suffix++;
  3121.             } while ( $post_name_check );
  3122.             $slug = $alt_post_name;
  3123.         }
  3124.     } elseif ( in_array( $post_type, $hierarchical_post_types ) ) {
  3125.         if ( 'nav_menu_item' == $post_type )
  3126.             return $slug;
  3127.         // Page slugs must be unique within their own trees. Pages are in a separate
  3128.         // namespace than posts so page slugs are allowed to overlap post slugs.
  3129.         $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type IN ( '" . implode( "', '", esc_sql( $hierarchical_post_types ) ) . "' ) AND ID != %d AND post_parent = %d LIMIT 1";
  3130.         $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_ID, $post_parent ) );
  3131.  
  3132.         if ( $post_name_check || in_array( $slug, $feeds ) || preg_match( "@^($wp_rewrite->pagination_base)?\d+$@", $slug )  || apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', false, $slug, $post_type, $post_parent ) ) {
  3133.             $suffix = 2;
  3134.             do {
  3135.                 $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
  3136.                 $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_ID, $post_parent ) );
  3137.                 $suffix++;
  3138.             } while ( $post_name_check );
  3139.             $slug = $alt_post_name;
  3140.         }
  3141.     } else {
  3142.         // Post slugs must be unique across all posts.
  3143.         $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d LIMIT 1";
  3144.         $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_ID ) );
  3145.  
  3146.         if ( $post_name_check || in_array( $slug, $feeds ) || apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type ) ) {
  3147.             $suffix = 2;
  3148.             do {
  3149.                 $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
  3150.                 $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) );
  3151.                 $suffix++;
  3152.             } while ( $post_name_check );
  3153.             $slug = $alt_post_name;
  3154.         }
  3155.     }
  3156.  
  3157.     return apply_filters( 'wp_unique_post_slug', $slug, $post_ID, $post_status, $post_type, $post_parent, $original_slug );
  3158. }
  3159.  
  3160. /**
  3161.  * Truncates a post slug.
  3162.  *
  3163.  * @since 3.6.0
  3164.  * @access private
  3165.  * @uses utf8_uri_encode() Makes sure UTF-8 characters are properly cut and encoded.
  3166.  *
  3167.  * @param string $slug The slug to truncate.
  3168.  * @param int $length Max length of the slug.
  3169.  * @return string The truncated slug.
  3170.  */
  3171. function _truncate_post_slug( $slug, $length = 200 ) {
  3172.     if ( strlen( $slug ) > $length ) {
  3173.         $decoded_slug = urldecode( $slug );
  3174.         if ( $decoded_slug === $slug )
  3175.             $slug = substr( $slug, 0, $length );
  3176.         else
  3177.             $slug = utf8_uri_encode( $decoded_slug, $length );
  3178.     }
  3179.  
  3180.     return rtrim( $slug, '-' );
  3181. }
  3182.  
  3183. /**
  3184.  * Adds tags to a post.
  3185.  *
  3186.  * @uses wp_set_post_tags() Same first two parameters, but the last parameter is always set to true.
  3187.  *
  3188.  * @package WordPress
  3189.  * @subpackage Post
  3190.  * @since 2.3.0
  3191.  *
  3192.  * @param int $post_id Post ID
  3193.  * @param string $tags The tags to set for the post, separated by commas.
  3194.  * @return bool|null Will return false if $post_id is not an integer or is 0. Will return null otherwise
  3195.  */
  3196. function wp_add_post_tags($post_id = 0, $tags = '') {
  3197.     return wp_set_post_tags($post_id, $tags, true);
  3198. }
  3199.  
  3200. /**
  3201.  * Set the tags for a post.
  3202.  *
  3203.  * @since 2.3.0
  3204.  * @uses wp_set_object_terms() Sets the tags for the post.
  3205.  *
  3206.  * @param int $post_id Post ID.
  3207.  * @param string $tags The tags to set for the post, separated by commas.
  3208.  * @param bool $append If true, don't delete existing tags, just add on. If false, replace the tags with the new tags.
  3209.  * @return mixed Array of affected term IDs. WP_Error or false on failure.
  3210.  */
  3211. function wp_set_post_tags( $post_id = 0, $tags = '', $append = false ) {
  3212.     return wp_set_post_terms( $post_id, $tags, 'post_tag', $append);
  3213. }
  3214.  
  3215. /**
  3216.  * Set the terms for a post.
  3217.  *
  3218.  * @since 2.8.0
  3219.  * @uses wp_set_object_terms() Sets the tags for the post.
  3220.  *
  3221.  * @param int $post_id Post ID.
  3222.  * @param string $tags The tags to set for the post, separated by commas.
  3223.  * @param string $taxonomy Taxonomy name. Defaults to 'post_tag'.
  3224.  * @param bool $append If true, don't delete existing tags, just add on. If false, replace the tags with the new tags.
  3225.  * @return mixed Array of affected term IDs. WP_Error or false on failure.
  3226.  */
  3227. function wp_set_post_terms( $post_id = 0, $tags = '', $taxonomy = 'post_tag', $append = false ) {
  3228.     $post_id = (int) $post_id;
  3229.  
  3230.     if ( !$post_id )
  3231.         return false;
  3232.  
  3233.     if ( empty($tags) )
  3234.         $tags = array();
  3235.  
  3236.     if ( ! is_array( $tags ) ) {
  3237.         $comma = _x( ',', 'tag delimiter' );
  3238.         if ( ',' !== $comma )
  3239.             $tags = str_replace( $comma, ',', $tags );
  3240.         $tags = explode( ',', trim( $tags, " \n\t\r\0\x0B," ) );
  3241.     }
  3242.  
  3243.     // Hierarchical taxonomies must always pass IDs rather than names so that children with the same
  3244.     // names but different parents aren't confused.
  3245.     if ( is_taxonomy_hierarchical( $taxonomy ) ) {
  3246.         $tags = array_unique( array_map( 'intval', $tags ) );
  3247.     }
  3248.  
  3249.     return wp_set_object_terms( $post_id, $tags, $taxonomy, $append );
  3250. }
  3251.  
  3252. /**
  3253.  * Set categories for a post.
  3254.  *
  3255.  * If the post categories parameter is not set, then the default category is
  3256.  * going used.
  3257.  *
  3258.  * @since 2.1.0
  3259.  *
  3260.  * @param int $post_ID Post ID.
  3261.  * @param array|int $post_categories Optional. List of categories or ID of category.
  3262.  * @param bool $append If true, don't delete existing categories, just add on. If false, replace the categories with the new categories.
  3263.  * @return bool|mixed
  3264.  */
  3265. function wp_set_post_categories( $post_ID = 0, $post_categories = array(), $append = false ) {
  3266.     $post_ID = (int) $post_ID;
  3267.     $post_type = get_post_type( $post_ID );
  3268.     $post_status = get_post_status( $post_ID );
  3269.     // If $post_categories isn't already an array, make it one:
  3270.     $post_categories = (array) $post_categories;
  3271.     if ( empty( $post_categories ) ) {
  3272.         if ( 'post' == $post_type && 'auto-draft' != $post_status ) {
  3273.             $post_categories = array( get_option('default_category') );
  3274.             $append = false;
  3275.         } else {
  3276.             $post_categories = array();
  3277.         }
  3278.     } else if ( 1 == count($post_categories) && '' == reset($post_categories) ) {
  3279.         return true;
  3280.     }
  3281.  
  3282.     return wp_set_post_terms( $post_ID, $post_categories, 'category', $append );
  3283. }
  3284.  
  3285. /**
  3286.  * Transition the post status of a post.
  3287.  *
  3288.  * Calls hooks to transition post status.
  3289.  *
  3290.  * The first is 'transition_post_status' with new status, old status, and post data.
  3291.  *
  3292.  * The next action called is 'OLDSTATUS_to_NEWSTATUS' the 'NEWSTATUS' is the
  3293.  * $new_status parameter and the 'OLDSTATUS' is $old_status parameter; it has the
  3294.  * post data.
  3295.  *
  3296.  * The final action is named 'NEWSTATUS_POSTTYPE', 'NEWSTATUS' is from the $new_status
  3297.  * parameter and POSTTYPE is post_type post data.
  3298.  *
  3299.  * @since 2.3.0
  3300.  * @link http://codex.wordpress.org/Post_Status_Transitions
  3301.  *
  3302.  * @uses do_action() Calls 'transition_post_status' on $new_status, $old_status and
  3303.  *  $post if there is a status change.
  3304.  * @uses do_action() Calls '{$old_status}_to_{$new_status}' on $post if there is a status change.
  3305.  * @uses do_action() Calls '{$new_status}_{$post->post_type}' on post ID and $post.
  3306.  *
  3307.  * @param string $new_status Transition to this post status.
  3308.  * @param string $old_status Previous post status.
  3309.  * @param object $post Post data.
  3310.  */
  3311. function wp_transition_post_status($new_status, $old_status, $post) {
  3312.     do_action('transition_post_status', $new_status, $old_status, $post);
  3313.     do_action("{$old_status}_to_{$new_status}", $post);
  3314.     do_action("{$new_status}_{$post->post_type}", $post->ID, $post);
  3315. }
  3316.  
  3317. //
  3318. // Trackback and ping functions
  3319. //
  3320.  
  3321. /**
  3322.  * Add a URL to those already pung.
  3323.  *
  3324.  * @since 1.5.0
  3325.  * @uses $wpdb
  3326.  *
  3327.  * @param int $post_id Post ID.
  3328.  * @param string $uri Ping URI.
  3329.  * @return int How many rows were updated.
  3330.  */
  3331. function add_ping($post_id, $uri) {
  3332.     global $wpdb;
  3333.     $pung = $wpdb->get_var( $wpdb->prepare( "SELECT pinged FROM $wpdb->posts WHERE ID = %d", $post_id ));
  3334.     $pung = trim($pung);
  3335.     $pung = preg_split('/\s/', $pung);
  3336.     $pung[] = $uri;
  3337.     $new = implode("\n", $pung);
  3338.     $new = apply_filters('add_ping', $new);
  3339.     // expected_slashed ($new)
  3340.     $new = wp_unslash($new);
  3341.     return $wpdb->update( $wpdb->posts, array( 'pinged' => $new ), array( 'ID' => $post_id ) );
  3342. }
  3343.  
  3344. /**
  3345.  * Retrieve enclosures already enclosed for a post.
  3346.  *
  3347.  * @since 1.5.0
  3348.  *
  3349.  * @param int $post_id Post ID.
  3350.  * @return array List of enclosures
  3351.  */
  3352. function get_enclosed($post_id) {
  3353.     $custom_fields = get_post_custom( $post_id );
  3354.     $pung = array();
  3355.     if ( !is_array( $custom_fields ) )
  3356.         return $pung;
  3357.  
  3358.     foreach ( $custom_fields as $key => $val ) {
  3359.         if ( 'enclosure' != $key || !is_array( $val ) )
  3360.             continue;
  3361.         foreach( $val as $enc ) {
  3362.             $enclosure = explode( "\n", $enc );
  3363.             $pung[] = trim( $enclosure[ 0 ] );
  3364.         }
  3365.     }
  3366.     $pung = apply_filters('get_enclosed', $pung, $post_id);
  3367.     return $pung;
  3368. }
  3369.  
  3370. /**
  3371.  * Retrieve URLs already pinged for a post.
  3372.  *
  3373.  * @since 1.5.0
  3374.  * @uses $wpdb
  3375.  *
  3376.  * @param int $post_id Post ID.
  3377.  * @return array
  3378.  */
  3379. function get_pung($post_id) {
  3380.     global $wpdb;
  3381.     $pung = $wpdb->get_var( $wpdb->prepare( "SELECT pinged FROM $wpdb->posts WHERE ID = %d", $post_id ));
  3382.     $pung = trim($pung);
  3383.     $pung = preg_split('/\s/', $pung);
  3384.     $pung = apply_filters('get_pung', $pung);
  3385.     return $pung;
  3386. }
  3387.  
  3388. /**
  3389.  * Retrieve URLs that need to be pinged.
  3390.  *
  3391.  * @since 1.5.0
  3392.  * @uses $wpdb
  3393.  *
  3394.  * @param int $post_id Post ID
  3395.  * @return array
  3396.  */
  3397. function get_to_ping($post_id) {
  3398.     global $wpdb;
  3399.     $to_ping = $wpdb->get_var( $wpdb->prepare( "SELECT to_ping FROM $wpdb->posts WHERE ID = %d", $post_id ));
  3400.     $to_ping = sanitize_trackback_urls( $to_ping );
  3401.     $to_ping = preg_split('/\s/', $to_ping, -1, PREG_SPLIT_NO_EMPTY);
  3402.     $to_ping = apply_filters('get_to_ping',  $to_ping);
  3403.     return $to_ping;
  3404. }
  3405.  
  3406. /**
  3407.  * Do trackbacks for a list of URLs.
  3408.  *
  3409.  * @since 1.0.0
  3410.  *
  3411.  * @param string $tb_list Comma separated list of URLs
  3412.  * @param int $post_id Post ID
  3413.  */
  3414. function trackback_url_list($tb_list, $post_id) {
  3415.     if ( ! empty( $tb_list ) ) {
  3416.         // get post data
  3417.         $postdata = get_post($post_id, ARRAY_A);
  3418.  
  3419.         // import postdata as variables
  3420.         extract($postdata, EXTR_SKIP);
  3421.  
  3422.         // form an excerpt
  3423.         $excerpt = strip_tags($post_excerpt ? $post_excerpt : $post_content);
  3424.  
  3425.         if (strlen($excerpt) > 255) {
  3426.             $excerpt = substr($excerpt,0,252) . '&hellip;';
  3427.         }
  3428.  
  3429.         $trackback_urls = explode(',', $tb_list);
  3430.         foreach( (array) $trackback_urls as $tb_url) {
  3431.             $tb_url = trim($tb_url);
  3432.             trackback($tb_url, wp_unslash($post_title), $excerpt, $post_id);
  3433.         }
  3434.     }
  3435. }
  3436.  
  3437. //
  3438. // Page functions
  3439. //
  3440.  
  3441. /**
  3442.  * Get a list of page IDs.
  3443.  *
  3444.  * @since 2.0.0
  3445.  * @uses $wpdb
  3446.  *
  3447.  * @return array List of page IDs.
  3448.  */
  3449. function get_all_page_ids() {
  3450.     global $wpdb;
  3451.  
  3452.     $page_ids = wp_cache_get('all_page_ids', 'posts');
  3453.     if ( ! is_array( $page_ids ) ) {
  3454.         $page_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE post_type = 'page'");
  3455.         wp_cache_add('all_page_ids', $page_ids, 'posts');
  3456.     }
  3457.  
  3458.     return $page_ids;
  3459. }
  3460.  
  3461. /**
  3462.  * Retrieves page data given a page ID or page object.
  3463.  *
  3464.  * Use get_post() instead of get_page().
  3465.  *
  3466.  * @since 1.5.1
  3467.  * @deprecated 3.5.0
  3468.  *
  3469.  * @param mixed $page Page object or page ID. Passed by reference.
  3470.  * @param string $output What to output. OBJECT, ARRAY_A, or ARRAY_N.
  3471.  * @param string $filter How the return value should be filtered.
  3472.  * @return WP_Post|null WP_Post on success or null on failure
  3473.  */
  3474. function get_page( $page, $output = OBJECT, $filter = 'raw') {
  3475.     return get_post( $page, $output, $filter );
  3476. }
  3477.  
  3478. /**
  3479.  * Retrieves a page given its path.
  3480.  *
  3481.  * @since 2.1.0
  3482.  * @uses $wpdb
  3483.  *
  3484.  * @param string $page_path Page path
  3485.  * @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A. Default OBJECT.
  3486.  * @param string $post_type Optional. Post type. Default page.
  3487.  * @return WP_Post|null WP_Post on success or null on failure
  3488.  */
  3489. function get_page_by_path($page_path, $output = OBJECT, $post_type = 'page') {
  3490.     global $wpdb;
  3491.  
  3492.     $page_path = rawurlencode(urldecode($page_path));
  3493.     $page_path = str_replace('%2F', '/', $page_path);
  3494.     $page_path = str_replace('%20', ' ', $page_path);
  3495.     $parts = explode( '/', trim( $page_path, '/' ) );
  3496.     $parts = esc_sql( $parts );
  3497.     $parts = array_map( 'sanitize_title_for_query', $parts );
  3498.  
  3499.     $in_string = "'". implode( "','", $parts ) . "'";
  3500.     $post_type_sql = esc_sql( $post_type );
  3501.     $pages = $wpdb->get_results( "SELECT ID, post_name, post_parent, post_type FROM $wpdb->posts WHERE post_name IN ($in_string) AND (post_type = '$post_type_sql' OR post_type = 'attachment')", OBJECT_K );
  3502.  
  3503.     $revparts = array_reverse( $parts );
  3504.  
  3505.     $foundid = 0;
  3506.     foreach ( (array) $pages as $page ) {
  3507.         if ( $page->post_name == $revparts[0] ) {
  3508.             $count = 0;
  3509.             $p = $page;
  3510.             while ( $p->post_parent != 0 && isset( $pages[ $p->post_parent ] ) ) {
  3511.                 $count++;
  3512.                 $parent = $pages[ $p->post_parent ];
  3513.                 if ( ! isset( $revparts[ $count ] ) || $parent->post_name != $revparts[ $count ] )
  3514.                     break;
  3515.                 $p = $parent;
  3516.             }
  3517.  
  3518.             if ( $p->post_parent == 0 && $count+1 == count( $revparts ) && $p->post_name == $revparts[ $count ] ) {
  3519.                 $foundid = $page->ID;
  3520.                 if ( $page->post_type == $post_type )
  3521.                     break;
  3522.             }
  3523.         }
  3524.     }
  3525.  
  3526.     if ( $foundid )
  3527.         return get_post( $foundid, $output );
  3528.  
  3529.     return null;
  3530. }
  3531.  
  3532. /**
  3533.  * Retrieve a page given its title.
  3534.  *
  3535.  * @since 2.1.0
  3536.  * @uses $wpdb
  3537.  *
  3538.  * @param string $page_title Page title
  3539.  * @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A. Default OBJECT.
  3540.  * @param string $post_type Optional. Post type. Default page.
  3541.  * @return WP_Post|null WP_Post on success or null on failure
  3542.  */
  3543. function get_page_by_title($page_title, $output = OBJECT, $post_type = 'page' ) {
  3544.     global $wpdb;
  3545.     $page = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type= %s", $page_title, $post_type ) );
  3546.     if ( $page )
  3547.         return get_post( $page, $output );
  3548.  
  3549.     return null;
  3550. }
  3551.  
  3552. /**
  3553.  * Retrieve child pages from list of pages matching page ID.
  3554.  *
  3555.  * Matches against the pages parameter against the page ID. Also matches all
  3556.  * children for the same to retrieve all children of a page. Does not make any
  3557.  * SQL queries to get the children.
  3558.  *
  3559.  * @since 1.5.1
  3560.  *
  3561.  * @param int $page_id Page ID.
  3562.  * @param array $pages List of pages' objects.
  3563.  * @return array
  3564.  */
  3565. function get_page_children($page_id, $pages) {
  3566.     $page_list = array();
  3567.     foreach ( (array) $pages as $page ) {
  3568.         if ( $page->post_parent == $page_id ) {
  3569.             $page_list[] = $page;
  3570.             if ( $children = get_page_children($page->ID, $pages) )
  3571.                 $page_list = array_merge($page_list, $children);
  3572.         }
  3573.     }
  3574.     return $page_list;
  3575. }
  3576.  
  3577. /**
  3578.  * Order the pages with children under parents in a flat list.
  3579.  *
  3580.  * It uses auxiliary structure to hold parent-children relationships and
  3581.  * runs in O(N) complexity
  3582.  *
  3583.  * @since 2.0.0
  3584.  *
  3585.  * @param array $pages Posts array.
  3586.  * @param int $page_id Parent page ID.
  3587.  * @return array A list arranged by hierarchy. Children immediately follow their parents.
  3588.  */
  3589. function get_page_hierarchy( &$pages, $page_id = 0 ) {
  3590.     if ( empty( $pages ) ) {
  3591.         $result = array();
  3592.         return $result;
  3593.     }
  3594.  
  3595.     $children = array();
  3596.     foreach ( (array) $pages as $p ) {
  3597.         $parent_id = intval( $p->post_parent );
  3598.         $children[ $parent_id ][] = $p;
  3599.     }
  3600.  
  3601.     $result = array();
  3602.     _page_traverse_name( $page_id, $children, $result );
  3603.  
  3604.     return $result;
  3605. }
  3606.  
  3607. /**
  3608.  * function to traverse and return all the nested children post names of a root page.
  3609.  * $children contains parent-children relations
  3610.  *
  3611.  * @since 2.9.0
  3612.  */
  3613. function _page_traverse_name( $page_id, &$children, &$result ){
  3614.     if ( isset( $children[ $page_id ] ) ){
  3615.         foreach( (array)$children[ $page_id ] as $child ) {
  3616.             $result[ $child->ID ] = $child->post_name;
  3617.             _page_traverse_name( $child->ID, $children, $result );
  3618.         }
  3619.     }
  3620. }
  3621.  
  3622. /**
  3623.  * Builds URI for a page.
  3624.  *
  3625.  * Sub pages will be in the "directory" under the parent page post name.
  3626.  *
  3627.  * @since 1.5.0
  3628.  *
  3629.  * @param mixed $page Page object or page ID.
  3630.  * @return string|false Page URI, false on error.
  3631.  */
  3632. function get_page_uri( $page ) {
  3633.     $page = get_post( $page );
  3634.  
  3635.     if ( ! $page )
  3636.         return false;
  3637.  
  3638.     $uri = $page->post_name;
  3639.  
  3640.     foreach ( $page->ancestors as $parent ) {
  3641.         $uri = get_post( $parent )->post_name . '/' . $uri;
  3642.     }
  3643.  
  3644.     return $uri;
  3645. }
  3646.  
  3647. /**
  3648.  * Retrieve a list of pages.
  3649.  *
  3650.  * @global wpdb $wpdb WordPress database abstraction object
  3651.  *
  3652.  * @since 1.5.0
  3653.  *
  3654.  * @param mixed $args {
  3655.  *     Array or string of arguments. Optional.
  3656.  *
  3657.  *     @type int    'child_of'     Page ID to return child and grandchild pages of. Default 0, or no restriction.
  3658.  *     @type string 'sort_order'   How to sort retrieved pages.
  3659.  *                                 Default 'ASC'. Accepts 'ASC', 'DESC'.
  3660.  *     @type string 'sort_column'  What columns to sort pages by, comma-separated.
  3661.  *                                 Default 'post_title'. Accepts 'post_author', 'post_date', 'post_title', 'post_name',
  3662.  *                                 'post_modified', 'post_modified_gmt', 'menu_order', 'post_parent', 'ID', 'rand',
  3663.  *                                 'comment_count'. 'post_' can be omitted for any values that start with it.
  3664.  *     @type bool   'hierarchical' Whether to return pages hierarchically. Default true.
  3665.  *     @type array  'exclude'      Array of page IDs to exclude.
  3666.  *     @type array  'include'      Array of page IDs to include. Cannot be used with 'child_of', 'parent', 'exclude',
  3667.  *                                 'meta_key', 'meta_value', or 'hierarchical'.
  3668.  *     @type string 'meta_key'     Only include pages with this meta key.
  3669.  *     @type string 'meta_value'   Only include pages with this meta value.
  3670.  *     @type string 'authors'      A comma-separated list of author IDs.
  3671.  *     @type int    'parent'       Page ID to return direct children of. 'hierarchical' must be false.
  3672.  *                                 Default -1, or no restriction.
  3673.  *     @type int    'exclude_tree' Remove all children of the given ID from returned pages.
  3674.  *     @type int    'number'       The number of pages to return. Default 0, or all pages.
  3675.  *     @type int    'offset'       The number of pages to skip before returning. Requires 'number'.
  3676.  *                                 Default 0.
  3677.  *     @type string 'post_type'    The post type to query.
  3678.  *                                 Default 'page'.
  3679.  *     @type string 'post_status'  A comma-separated list of post status types to include.
  3680.  *                                 Default 'publish'.
  3681.  * }
  3682.  * @return array List of pages matching defaults or $args.
  3683.  */
  3684. function get_pages( $args = array() ) {
  3685.     global $wpdb;
  3686.  
  3687.     $pages = false;
  3688.  
  3689.     $defaults = array(
  3690.         'child_of' => 0, 'sort_order' => 'ASC',
  3691.         'sort_column' => 'post_title', 'hierarchical' => 1,
  3692.         'exclude' => array(), 'include' => array(),
  3693.         'meta_key' => '', 'meta_value' => '',
  3694.         'authors' => '', 'parent' => -1, 'exclude_tree' => '',
  3695.         'number' => '', 'offset' => 0,
  3696.         'post_type' => 'page', 'post_status' => 'publish',
  3697.     );
  3698.  
  3699.     $r = wp_parse_args( $args, $defaults );
  3700.     extract( $r, EXTR_SKIP );
  3701.     $number = (int) $number;
  3702.     $offset = (int) $offset;
  3703.  
  3704.     // Make sure the post type is hierarchical
  3705.     $hierarchical_post_types = get_post_types( array( 'hierarchical' => true ) );
  3706.     if ( !in_array( $post_type, $hierarchical_post_types ) )
  3707.         return $pages;
  3708.  
  3709.     if ( $parent > 0 && ! $child_of )
  3710.         $hierarchical = false;
  3711.  
  3712.     // Make sure we have a valid post status
  3713.     if ( !is_array( $post_status ) )
  3714.         $post_status = explode( ',', $post_status );
  3715.     if ( array_diff( $post_status, get_post_stati() ) )
  3716.         return $pages;
  3717.  
  3718.     // $args can be whatever, only use the args defined in defaults to compute the key
  3719.     $key = md5( serialize( compact(array_keys($defaults)) ) );
  3720.     $last_changed = wp_cache_get( 'last_changed', 'posts' );
  3721.     if ( ! $last_changed ) {
  3722.         $last_changed = microtime();
  3723.         wp_cache_set( 'last_changed', $last_changed, 'posts' );
  3724.     }
  3725.  
  3726.     $cache_key = "get_pages:$key:$last_changed";
  3727.     if ( $cache = wp_cache_get( $cache_key, 'posts' ) ) {
  3728.         // Convert to WP_Post instances
  3729.         $pages = array_map( 'get_post', $cache );
  3730.         $pages = apply_filters('get_pages', $pages, $r);
  3731.         return $pages;
  3732.     }
  3733.  
  3734.     if ( !is_array($cache) )
  3735.         $cache = array();
  3736.  
  3737.     $inclusions = '';
  3738.     if ( ! empty( $include ) ) {
  3739.         $child_of = 0; //ignore child_of, parent, exclude, meta_key, and meta_value params if using include
  3740.         $parent = -1;
  3741.         $exclude = '';
  3742.         $meta_key = '';
  3743.         $meta_value = '';
  3744.         $hierarchical = false;
  3745.         $incpages = wp_parse_id_list( $include );
  3746.         if ( ! empty( $incpages ) )
  3747.             $inclusions = ' AND ID IN (' . implode( ',', $incpages ) .  ')';
  3748.     }
  3749.  
  3750.     $exclusions = '';
  3751.     if ( ! empty( $exclude ) ) {
  3752.         $expages = wp_parse_id_list( $exclude );
  3753.         if ( ! empty( $expages ) )
  3754.             $exclusions = ' AND ID NOT IN (' . implode( ',', $expages ) .  ')';
  3755.     }
  3756.  
  3757.     $author_query = '';
  3758.     if (!empty($authors)) {
  3759.         $post_authors = preg_split('/[\s,]+/',$authors);
  3760.  
  3761.         if ( ! empty( $post_authors ) ) {
  3762.             foreach ( $post_authors as $post_author ) {
  3763.                 //Do we have an author id or an author login?
  3764.                 if ( 0 == intval($post_author) ) {
  3765.                     $post_author = get_user_by('login', $post_author);
  3766.                     if ( empty($post_author) )
  3767.                         continue;
  3768.                     if ( empty($post_author->ID) )
  3769.                         continue;
  3770.                     $post_author = $post_author->ID;
  3771.                 }
  3772.  
  3773.                 if ( '' == $author_query )
  3774.                     $author_query = $wpdb->prepare(' post_author = %d ', $post_author);
  3775.                 else
  3776.                     $author_query .= $wpdb->prepare(' OR post_author = %d ', $post_author);
  3777.             }
  3778.             if ( '' != $author_query )
  3779.                 $author_query = " AND ($author_query)";
  3780.         }
  3781.     }
  3782.  
  3783.     $join = '';
  3784.     $where = "$exclusions $inclusions ";
  3785.     if ( '' !== $meta_key || '' !== $meta_value ) {
  3786.         $join = " LEFT JOIN $wpdb->postmeta ON ( $wpdb->posts.ID = $wpdb->postmeta.post_id )";
  3787.  
  3788.         // meta_key and meta_value might be slashed
  3789.         $meta_key = wp_unslash($meta_key);
  3790.         $meta_value = wp_unslash($meta_value);
  3791.         if ( '' !== $meta_key )
  3792.             $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_key = %s", $meta_key);
  3793.         if ( '' !== $meta_value )
  3794.             $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_value = %s", $meta_value);
  3795.  
  3796.     }
  3797.  
  3798.     if ( is_array( $parent ) ) {
  3799.         $post_parent__in = implode( ',', array_map( 'absint', (array) $parent ) );
  3800.         if ( ! empty( $post_parent__in ) )
  3801.             $where .= " AND post_parent IN ($post_parent__in)";
  3802.     } elseif ( $parent >= 0 ) {
  3803.         $where .= $wpdb->prepare(' AND post_parent = %d ', $parent);
  3804.     }
  3805.  
  3806.     if ( 1 == count( $post_status ) ) {
  3807.         $where_post_type = $wpdb->prepare( "post_type = %s AND post_status = %s", $post_type, array_shift( $post_status ) );
  3808.     } else {
  3809.         $post_status = implode( "', '", $post_status );
  3810.         $where_post_type = $wpdb->prepare( "post_type = %s AND post_status IN ('$post_status')", $post_type );
  3811.     }
  3812.  
  3813.     $orderby_array = array();
  3814.     $allowed_keys = array('author', 'post_author', 'date', 'post_date', 'title', 'post_title', 'name', 'post_name', 'modified',
  3815.                           'post_modified', 'modified_gmt', 'post_modified_gmt', 'menu_order', 'parent', 'post_parent',
  3816.                           'ID', 'rand', 'comment_count');
  3817.     foreach ( explode( ',', $sort_column ) as $orderby ) {
  3818.         $orderby = trim( $orderby );
  3819.         if ( !in_array( $orderby, $allowed_keys ) )
  3820.             continue;
  3821.  
  3822.         switch ( $orderby ) {
  3823.             case 'menu_order':
  3824.                 break;
  3825.             case 'ID':
  3826.                 $orderby = "$wpdb->posts.ID";
  3827.                 break;
  3828.             case 'rand':
  3829.                 $orderby = 'RAND()';
  3830.                 break;
  3831.             case 'comment_count':
  3832.                 $orderby = "$wpdb->posts.comment_count";
  3833.                 break;
  3834.             default:
  3835.                 if ( 0 === strpos( $orderby, 'post_' ) )
  3836.                     $orderby = "$wpdb->posts." . $orderby;
  3837.                 else
  3838.                     $orderby = "$wpdb->posts.post_" . $orderby;
  3839.         }
  3840.  
  3841.         $orderby_array[] = $orderby;
  3842.  
  3843.     }
  3844.     $sort_column = ! empty( $orderby_array ) ? implode( ',', $orderby_array ) : "$wpdb->posts.post_title";
  3845.  
  3846.     $sort_order = strtoupper( $sort_order );
  3847.     if ( '' !== $sort_order && !in_array( $sort_order, array( 'ASC', 'DESC' ) ) )
  3848.         $sort_order = 'ASC';
  3849.  
  3850.     $query = "SELECT * FROM $wpdb->posts $join WHERE ($where_post_type) $where ";
  3851.     $query .= $author_query;
  3852.     $query .= " ORDER BY " . $sort_column . " " . $sort_order ;
  3853.  
  3854.     if ( !empty($number) )
  3855.         $query .= ' LIMIT ' . $offset . ',' . $number;
  3856.  
  3857.     $pages = $wpdb->get_results($query);
  3858.  
  3859.     if ( empty($pages) ) {
  3860.         $pages = apply_filters('get_pages', array(), $r);
  3861.         return $pages;
  3862.     }
  3863.  
  3864.     // Sanitize before caching so it'll only get done once
  3865.     $num_pages = count($pages);
  3866.     for ($i = 0; $i < $num_pages; $i++) {
  3867.         $pages[$i] = sanitize_post($pages[$i], 'raw');
  3868.     }
  3869.  
  3870.     // Update cache.
  3871.     update_post_cache( $pages );
  3872.  
  3873.     if ( $child_of || $hierarchical )
  3874.         $pages = get_page_children($child_of, $pages);
  3875.  
  3876.     if ( !empty($exclude_tree) ) {
  3877.         $exclude = (int) $exclude_tree;
  3878.         $children = get_page_children($exclude, $pages);
  3879.         $excludes = array();
  3880.         foreach ( $children as $child )
  3881.             $excludes[] = $child->ID;
  3882.         $excludes[] = $exclude;
  3883.         $num_pages = count($pages);
  3884.         for ( $i = 0; $i < $num_pages; $i++ ) {
  3885.             if ( in_array($pages[$i]->ID, $excludes) )
  3886.                 unset($pages[$i]);
  3887.         }
  3888.     }
  3889.  
  3890.     $page_structure = array();
  3891.     foreach ( $pages as $page )
  3892.         $page_structure[] = $page->ID;
  3893.  
  3894.     wp_cache_set( $cache_key, $page_structure, 'posts' );
  3895.  
  3896.     // Convert to WP_Post instances
  3897.     $pages = array_map( 'get_post', $pages );
  3898.  
  3899.     $pages = apply_filters('get_pages', $pages, $r);
  3900.  
  3901.     return $pages;
  3902. }
  3903.  
  3904. //
  3905. // Attachment functions
  3906. //
  3907.  
  3908. /**
  3909.  * Check if the attachment URI is local one and is really an attachment.
  3910.  *
  3911.  * @since 2.0.0
  3912.  *
  3913.  * @param string $url URL to check
  3914.  * @return bool True on success, false on failure.
  3915.  */
  3916. function is_local_attachment($url) {
  3917.     if (strpos($url, home_url()) === false)
  3918.         return false;
  3919.     if (strpos($url, home_url('/?attachment_id=')) !== false)
  3920.         return true;
  3921.     if ( $id = url_to_postid($url) ) {
  3922.         $post = get_post($id);
  3923.         if ( 'attachment' == $post->post_type )
  3924.             return true;
  3925.     }
  3926.     return false;
  3927. }
  3928.  
  3929. /**
  3930.  * Insert an attachment.
  3931.  *
  3932.  * If you set the 'ID' in the $object parameter, it will mean that you are
  3933.  * updating and attempt to update the attachment. You can also set the
  3934.  * attachment name or title by setting the key 'post_name' or 'post_title'.
  3935.  *
  3936.  * You can set the dates for the attachment manually by setting the 'post_date'
  3937.  * and 'post_date_gmt' keys' values.
  3938.  *
  3939.  * By default, the comments will use the default settings for whether the
  3940.  * comments are allowed. You can close them manually or keep them open by
  3941.  * setting the value for the 'comment_status' key.
  3942.  *
  3943.  * The $object parameter can have the following:
  3944.  *     'post_status'   - Default is 'draft'. Can not be overridden, set the same as parent post.
  3945.  *     'post_type'     - Default is 'post', will be set to attachment. Can not override.
  3946.  *     'post_author'   - Default is current user ID. The ID of the user, who added the attachment.
  3947.  *     'ping_status'   - Default is the value in default ping status option. Whether the attachment
  3948.  *                       can accept pings.
  3949.  *     'post_parent'   - Default is 0. Can use $parent parameter or set this for the post it belongs
  3950.  *                       to, if any.
  3951.  *     'menu_order'    - Default is 0. The order it is displayed.
  3952.  *     'to_ping'       - Whether to ping.
  3953.  *     'pinged'        - Default is empty string.
  3954.  *     'post_password' - Default is empty string. The password to access the attachment.
  3955.  *     'guid'          - Global Unique ID for referencing the attachment.
  3956.  *     'post_content_filtered' - Attachment post content filtered.
  3957.  *     'post_excerpt'  - Attachment excerpt.
  3958.  *
  3959.  * @since 2.0.0
  3960.  * @uses $wpdb
  3961.  * @uses do_action() Calls 'edit_attachment' on $post_ID if this is an update.
  3962.  * @uses do_action() Calls 'add_attachment' on $post_ID if this is not an update.
  3963.  *
  3964.  * @param string|array $object Arguments to override defaults.
  3965.  * @param string $file Optional filename.
  3966.  * @param int $parent Parent post ID.
  3967.  * @return int Attachment ID.
  3968.  */
  3969. function wp_insert_attachment($object, $file = false, $parent = 0) {
  3970.     global $wpdb;
  3971.  
  3972.     $user_id = get_current_user_id();
  3973.  
  3974.     $defaults = array('post_status' => 'inherit', 'post_type' => 'post', 'post_author' => $user_id,
  3975.         'ping_status' => get_option('default_ping_status'), 'post_parent' => 0, 'post_title' => '',
  3976.         'menu_order' => 0, 'to_ping' =>  '', 'pinged' => '', 'post_password' => '', 'post_content' => '',
  3977.         'guid' => '', 'post_content_filtered' => '', 'post_excerpt' => '', 'import_id' => 0, 'context' => '');
  3978.  
  3979.     $object = wp_parse_args($object, $defaults);
  3980.     if ( !empty($parent) )
  3981.         $object['post_parent'] = $parent;
  3982.  
  3983.     unset( $object[ 'filter' ] );
  3984.  
  3985.     $object = sanitize_post($object, 'db');
  3986.  
  3987.     // export array as variables
  3988.     extract($object, EXTR_SKIP);
  3989.  
  3990.     if ( empty($post_author) )
  3991.         $post_author = $user_id;
  3992.  
  3993.     $post_type = 'attachment';
  3994.  
  3995.     if ( ! in_array( $post_status, array( 'inherit', 'private' ) ) )
  3996.         $post_status = 'inherit';
  3997.  
  3998.     if ( !empty($post_category) )
  3999.         $post_category = array_filter($post_category); // Filter out empty terms
  4000.  
  4001.     // Make sure we set a valid category.
  4002.     if ( empty($post_category) || 0 == count($post_category) || !is_array($post_category) ) {
  4003.         $post_category = array();
  4004.     }
  4005.  
  4006.     // Are we updating or creating?
  4007.     if ( !empty($ID) ) {
  4008.         $update = true;
  4009.         $post_ID = (int) $ID;
  4010.     } else {
  4011.         $update = false;
  4012.         $post_ID = 0;
  4013.     }
  4014.  
  4015.     // Create a valid post name.
  4016.     if ( empty($post_name) )
  4017.         $post_name = sanitize_title($post_title);
  4018.     else
  4019.         $post_name = sanitize_title($post_name);
  4020.  
  4021.     // expected_slashed ($post_name)
  4022.     $post_name = wp_unique_post_slug($post_name, $post_ID, $post_status, $post_type, $post_parent);
  4023.  
  4024.     if ( empty($post_date) )
  4025.         $post_date = current_time('mysql');
  4026.     if ( empty($post_date_gmt) )
  4027.         $post_date_gmt = current_time('mysql', 1);
  4028.  
  4029.     if ( empty($post_modified) )
  4030.         $post_modified = $post_date;
  4031.     if ( empty($post_modified_gmt) )
  4032.         $post_modified_gmt = $post_date_gmt;
  4033.  
  4034.     if ( empty($comment_status) ) {
  4035.         if ( $update )
  4036.             $comment_status = 'closed';
  4037.         else
  4038.             $comment_status = get_option('default_comment_status');
  4039.     }
  4040.     if ( empty($ping_status) )
  4041.         $ping_status = get_option('default_ping_status');
  4042.  
  4043.     if ( isset($to_ping) )
  4044.         $to_ping = preg_replace('|\s+|', "\n", $to_ping);
  4045.     else
  4046.         $to_ping = '';
  4047.  
  4048.     if ( isset($post_parent) )
  4049.         $post_parent = (int) $post_parent;
  4050.     else
  4051.         $post_parent = 0;
  4052.  
  4053.     if ( isset($menu_order) )
  4054.         $menu_order = (int) $menu_order;
  4055.     else
  4056.         $menu_order = 0;
  4057.  
  4058.     if ( !isset($post_password) )
  4059.         $post_password = '';
  4060.  
  4061.     if ( ! isset($pinged) )
  4062.         $pinged = '';
  4063.  
  4064.     // expected_slashed (everything!)
  4065.     $data = compact( array( 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_content_filtered', 'post_title', 'post_excerpt', 'post_status', 'post_type', 'comment_status', 'ping_status', 'post_password', 'post_name', 'to_ping', 'pinged', 'post_modified', 'post_modified_gmt', 'post_parent', 'menu_order', 'post_mime_type', 'guid' ) );
  4066.     $data = wp_unslash( $data );
  4067.  
  4068.     if ( $update ) {
  4069.         $wpdb->update( $wpdb->posts, $data, array( 'ID' => $post_ID ) );
  4070.     } else {
  4071.         // If there is a suggested ID, use it if not already present
  4072.         if ( !empty($import_id) ) {
  4073.             $import_id = (int) $import_id;
  4074.             if ( ! $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id) ) ) {
  4075.                 $data['ID'] = $import_id;
  4076.             }
  4077.         }
  4078.  
  4079.         $wpdb->insert( $wpdb->posts, $data );
  4080.         $post_ID = (int) $wpdb->insert_id;
  4081.     }
  4082.  
  4083.     if ( empty($post_name) ) {
  4084.         $post_name = sanitize_title($post_title, $post_ID);
  4085.         $wpdb->update( $wpdb->posts, compact("post_name"), array( 'ID' => $post_ID ) );
  4086.     }
  4087.  
  4088.     if ( is_object_in_taxonomy($post_type, 'category') )
  4089.         wp_set_post_categories( $post_ID, $post_category );
  4090.  
  4091.     if ( isset( $tags_input ) && is_object_in_taxonomy($post_type, 'post_tag') )
  4092.         wp_set_post_tags( $post_ID, $tags_input );
  4093.  
  4094.     // support for all custom taxonomies
  4095.     if ( !empty($tax_input) ) {
  4096.         foreach ( $tax_input as $taxonomy => $tags ) {
  4097.             $taxonomy_obj = get_taxonomy($taxonomy);
  4098.             if ( is_array($tags) ) // array = hierarchical, string = non-hierarchical.
  4099.                 $tags = array_filter($tags);
  4100.             if ( current_user_can($taxonomy_obj->cap->assign_terms) )
  4101.                 wp_set_post_terms( $post_ID, $tags, $taxonomy );
  4102.         }
  4103.     }
  4104.  
  4105.     if ( $file )
  4106.         update_attached_file( $post_ID, $file );
  4107.  
  4108.     clean_post_cache( $post_ID );
  4109.  
  4110.     if ( ! empty( $context ) )
  4111.         add_post_meta( $post_ID, '_wp_attachment_context', $context, true );
  4112.  
  4113.     if ( $update) {
  4114.         do_action('edit_attachment', $post_ID);
  4115.     } else {
  4116.         do_action('add_attachment', $post_ID);
  4117.     }
  4118.  
  4119.     return $post_ID;
  4120. }
  4121.  
  4122. /**
  4123.  * Trashes or deletes an attachment.
  4124.  *
  4125.  * When an attachment is permanently deleted, the file will also be removed.
  4126.  * Deletion removes all post meta fields, taxonomy, comments, etc. associated
  4127.  * with the attachment (except the main post).
  4128.  *
  4129.  * The attachment is moved to the trash instead of permanently deleted unless trash
  4130.  * for media is disabled, item is already in the trash, or $force_delete is true.
  4131.  *
  4132.  * @since 2.0.0
  4133.  * @uses $wpdb
  4134.  * @uses do_action() Calls 'delete_attachment' hook on Attachment ID.
  4135.  *
  4136.  * @param int $post_id Attachment ID.
  4137.  * @param bool $force_delete Whether to bypass trash and force deletion. Defaults to false.
  4138.  * @return mixed False on failure. Post data on success.
  4139.  */
  4140. function wp_delete_attachment( $post_id, $force_delete = false ) {
  4141.     global $wpdb;
  4142.  
  4143.     if ( !$post = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id) ) )
  4144.         return $post;
  4145.  
  4146.     if ( 'attachment' != $post->post_type )
  4147.         return false;
  4148.  
  4149.     if ( !$force_delete && EMPTY_TRASH_DAYS && MEDIA_TRASH && 'trash' != $post->post_status )
  4150.         return wp_trash_post( $post_id );
  4151.  
  4152.     delete_post_meta($post_id, '_wp_trash_meta_status');
  4153.     delete_post_meta($post_id, '_wp_trash_meta_time');
  4154.  
  4155.     $meta = wp_get_attachment_metadata( $post_id );
  4156.     $backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true );
  4157.     $file = get_attached_file( $post_id );
  4158.  
  4159.     $intermediate_sizes = array();
  4160.     foreach ( get_intermediate_image_sizes() as $size ) {
  4161.         if ( $intermediate = image_get_intermediate_size( $post_id, $size ) )
  4162.             $intermediate_sizes[] = $intermediate;
  4163.     }
  4164.  
  4165.     if ( is_multisite() )
  4166.         delete_transient( 'dirsize_cache' );
  4167.  
  4168.     do_action('delete_attachment', $post_id);
  4169.  
  4170.     wp_delete_object_term_relationships($post_id, array('category', 'post_tag'));
  4171.     wp_delete_object_term_relationships($post_id, get_object_taxonomies($post->post_type));
  4172.  
  4173.     delete_metadata( 'post', null, '_thumbnail_id', $post_id, true ); // delete all for any posts.
  4174.  
  4175.     $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ));
  4176.     foreach ( $comment_ids as $comment_id )
  4177.         wp_delete_comment( $comment_id, true );
  4178.  
  4179.     $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id ));
  4180.     foreach ( $post_meta_ids as $mid )
  4181.         delete_metadata_by_mid( 'post', $mid );
  4182.  
  4183.     do_action( 'delete_post', $post_id );
  4184.     $wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
  4185.     do_action( 'deleted_post', $post_id );
  4186.  
  4187.     $uploadpath = wp_upload_dir();
  4188.  
  4189.     if ( ! empty($meta['thumb']) ) {
  4190.         // Don't delete the thumb if another attachment uses it
  4191.         if (! $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attachment_metadata' AND meta_value LIKE %s AND post_id <> %d", '%' . $meta['thumb'] . '%', $post_id)) ) {
  4192.             $thumbfile = str_replace(basename($file), $meta['thumb'], $file);
  4193.             /** This filter is documented in wp-admin/custom-header.php */
  4194.             $thumbfile = apply_filters('wp_delete_file', $thumbfile);
  4195.             @ unlink( path_join($uploadpath['basedir'], $thumbfile) );
  4196.         }
  4197.     }
  4198.  
  4199.     // remove intermediate and backup images if there are any
  4200.     foreach ( $intermediate_sizes as $intermediate ) {
  4201.         /** This filter is documented in wp-admin/custom-header.php */
  4202.         $intermediate_file = apply_filters( 'wp_delete_file', $intermediate['path'] );
  4203.         @ unlink( path_join($uploadpath['basedir'], $intermediate_file) );
  4204.     }
  4205.  
  4206.     if ( is_array($backup_sizes) ) {
  4207.         foreach ( $backup_sizes as $size ) {
  4208.             $del_file = path_join( dirname($meta['file']), $size['file'] );
  4209.             /** This filter is documented in wp-admin/custom-header.php */
  4210.             $del_file = apply_filters('wp_delete_file', $del_file);
  4211.             @ unlink( path_join($uploadpath['basedir'], $del_file) );
  4212.         }
  4213.     }
  4214.  
  4215.     /** This filter is documented in wp-admin/custom-header.php */
  4216.     $file = apply_filters('wp_delete_file', $file);
  4217.  
  4218.     if ( ! empty($file) )
  4219.         @ unlink($file);
  4220.  
  4221.     clean_post_cache( $post );
  4222.  
  4223.     return $post;
  4224. }
  4225.  
  4226. /**
  4227.  * Retrieve attachment meta field for attachment ID.
  4228.  *
  4229.  * @since 2.1.0
  4230.  *
  4231.  * @param int $post_id Attachment ID
  4232.  * @param bool $unfiltered Optional, default is false. If true, filters are not run.
  4233.  * @return string|bool Attachment meta field. False on failure.
  4234.  */
  4235. function wp_get_attachment_metadata( $post_id = 0, $unfiltered = false ) {
  4236.     $post_id = (int) $post_id;
  4237.     if ( !$post = get_post( $post_id ) )
  4238.         return false;
  4239.  
  4240.     $data = get_post_meta( $post->ID, '_wp_attachment_metadata', true );
  4241.  
  4242.     if ( $unfiltered )
  4243.         return $data;
  4244.  
  4245.     return apply_filters( 'wp_get_attachment_metadata', $data, $post->ID );
  4246. }
  4247.  
  4248. /**
  4249.  * Update metadata for an attachment.
  4250.  *
  4251.  * @since 2.1.0
  4252.  *
  4253.  * @param int $post_id Attachment ID.
  4254.  * @param array $data Attachment data.
  4255.  * @return int
  4256.  */
  4257. function wp_update_attachment_metadata( $post_id, $data ) {
  4258.     $post_id = (int) $post_id;
  4259.     if ( !$post = get_post( $post_id ) )
  4260.         return false;
  4261.  
  4262.     if ( $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID ) )
  4263.         return update_post_meta( $post->ID, '_wp_attachment_metadata', $data );
  4264.     else
  4265.         return delete_post_meta( $post->ID, '_wp_attachment_metadata' );
  4266. }
  4267.  
  4268. /**
  4269.  * Retrieve the URL for an attachment.
  4270.  *
  4271.  * @since 2.1.0
  4272.  *
  4273.  * @param int $post_id Attachment ID.
  4274.  * @return string
  4275.  */
  4276. function wp_get_attachment_url( $post_id = 0 ) {
  4277.     $post_id = (int) $post_id;
  4278.     if ( !$post = get_post( $post_id ) )
  4279.         return false;
  4280.  
  4281.     if ( 'attachment' != $post->post_type )
  4282.         return false;
  4283.  
  4284.     $url = '';
  4285.     if ( $file = get_post_meta( $post->ID, '_wp_attached_file', true) ) { //Get attached file
  4286.         if ( ($uploads = wp_upload_dir()) && false === $uploads['error'] ) { //Get upload directory
  4287.             if ( 0 === strpos($file, $uploads['basedir']) ) //Check that the upload base exists in the file location
  4288.                 $url = str_replace($uploads['basedir'], $uploads['baseurl'], $file); //replace file location with url location
  4289.             elseif ( false !== strpos($file, 'wp-content/uploads') )
  4290.                 $url = $uploads['baseurl'] . substr( $file, strpos($file, 'wp-content/uploads') + 18 );
  4291.             else
  4292.                 $url = $uploads['baseurl'] . "/$file"; //Its a newly uploaded file, therefor $file is relative to the basedir.
  4293.         }
  4294.     }
  4295.  
  4296.     if ( empty($url) ) //If any of the above options failed, Fallback on the GUID as used pre-2.7, not recommended to rely upon this.
  4297.         $url = get_the_guid( $post->ID );
  4298.  
  4299.     $url = apply_filters( 'wp_get_attachment_url', $url, $post->ID );
  4300.  
  4301.     if ( empty( $url ) )
  4302.         return false;
  4303.  
  4304.     return $url;
  4305. }
  4306.  
  4307. /**
  4308.  * Retrieve thumbnail for an attachment.
  4309.  *
  4310.  * @since 2.1.0
  4311.  *
  4312.  * @param int $post_id Attachment ID.
  4313.  * @return mixed False on failure. Thumbnail file path on success.
  4314.  */
  4315. function wp_get_attachment_thumb_file( $post_id = 0 ) {
  4316.     $post_id = (int) $post_id;
  4317.     if ( !$post = get_post( $post_id ) )
  4318.         return false;
  4319.     if ( !is_array( $imagedata = wp_get_attachment_metadata( $post->ID ) ) )
  4320.         return false;
  4321.  
  4322.     $file = get_attached_file( $post->ID );
  4323.  
  4324.     if ( !empty($imagedata['thumb']) && ($thumbfile = str_replace(basename($file), $imagedata['thumb'], $file)) && file_exists($thumbfile) )
  4325.         return apply_filters( 'wp_get_attachment_thumb_file', $thumbfile, $post->ID );
  4326.     return false;
  4327. }
  4328.  
  4329. /**
  4330.  * Retrieve URL for an attachment thumbnail.
  4331.  *
  4332.  * @since 2.1.0
  4333.  *
  4334.  * @param int $post_id Attachment ID
  4335.  * @return string|bool False on failure. Thumbnail URL on success.
  4336.  */
  4337. function wp_get_attachment_thumb_url( $post_id = 0 ) {
  4338.     $post_id = (int) $post_id;
  4339.     if ( !$post = get_post( $post_id ) )
  4340.         return false;
  4341.     if ( !$url = wp_get_attachment_url( $post->ID ) )
  4342.         return false;
  4343.  
  4344.     $sized = image_downsize( $post_id, 'thumbnail' );
  4345.     if ( $sized )
  4346.         return $sized[0];
  4347.  
  4348.     if ( !$thumb = wp_get_attachment_thumb_file( $post->ID ) )
  4349.         return false;
  4350.  
  4351.     $url = str_replace(basename($url), basename($thumb), $url);
  4352.  
  4353.     return apply_filters( 'wp_get_attachment_thumb_url', $url, $post->ID );
  4354. }
  4355.  
  4356. /**
  4357.  * Check if the attachment is an image.
  4358.  *
  4359.  * @since 2.1.0
  4360.  *
  4361.  * @param int $post_id Attachment ID
  4362.  * @return bool
  4363.  */
  4364. function wp_attachment_is_image( $post_id = 0 ) {
  4365.     $post_id = (int) $post_id;
  4366.     if ( !$post = get_post( $post_id ) )
  4367.         return false;
  4368.  
  4369.     if ( !$file = get_attached_file( $post->ID ) )
  4370.         return false;
  4371.  
  4372.     $ext = preg_match('/\.([^.]+)$/', $file, $matches) ? strtolower($matches[1]) : false;
  4373.  
  4374.     $image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png' );
  4375.  
  4376.     if ( 'image/' == substr($post->post_mime_type, 0, 6) || $ext && 'import' == $post->post_mime_type && in_array($ext, $image_exts) )
  4377.         return true;
  4378.     return false;
  4379. }
  4380.  
  4381. /**
  4382.  * Retrieve the icon for a MIME type.
  4383.  *
  4384.  * @since 2.1.0
  4385.  *
  4386.  * @param string|int $mime MIME type or attachment ID.
  4387.  * @return string|bool
  4388.  */
  4389. function wp_mime_type_icon( $mime = 0 ) {
  4390.     if ( !is_numeric($mime) )
  4391.         $icon = wp_cache_get("mime_type_icon_$mime");
  4392.  
  4393.     $post_id = 0;
  4394.     if ( empty($icon) ) {
  4395.         $post_mimes = array();
  4396.         if ( is_numeric($mime) ) {
  4397.             $mime = (int) $mime;
  4398.             if ( $post = get_post( $mime ) ) {
  4399.                 $post_id = (int) $post->ID;
  4400.                 $ext = preg_replace('/^.+?\.([^.]+)$/', '$1', $post->guid);
  4401.                 if ( !empty($ext) ) {
  4402.                     $post_mimes[] = $ext;
  4403.                     if ( $ext_type = wp_ext2type( $ext ) )
  4404.                         $post_mimes[] = $ext_type;
  4405.                 }
  4406.                 $mime = $post->post_mime_type;
  4407.             } else {
  4408.                 $mime = 0;
  4409.             }
  4410.         } else {
  4411.             $post_mimes[] = $mime;
  4412.         }
  4413.  
  4414.         $icon_files = wp_cache_get('icon_files');
  4415.  
  4416.         if ( !is_array($icon_files) ) {
  4417.             $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/crystal' );
  4418.             $icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url('images/crystal') );
  4419.             $dirs = apply_filters( 'icon_dirs', array($icon_dir => $icon_dir_uri) );
  4420.             $icon_files = array();
  4421.             while ( $dirs ) {
  4422.                 $keys = array_keys( $dirs );
  4423.                 $dir = array_shift( $keys );
  4424.                 $uri = array_shift($dirs);
  4425.                 if ( $dh = opendir($dir) ) {
  4426.                     while ( false !== $file = readdir($dh) ) {
  4427.                         $file = basename($file);
  4428.                         if ( substr($file, 0, 1) == '.' )
  4429.                             continue;
  4430.                         if ( !in_array(strtolower(substr($file, -4)), array('.png', '.gif', '.jpg') ) ) {
  4431.                             if ( is_dir("$dir/$file") )
  4432.                                 $dirs["$dir/$file"] = "$uri/$file";
  4433.                             continue;
  4434.                         }
  4435.                         $icon_files["$dir/$file"] = "$uri/$file";
  4436.                     }
  4437.                     closedir($dh);
  4438.                 }
  4439.             }
  4440.             wp_cache_add( 'icon_files', $icon_files, 'default', 600 );
  4441.         }
  4442.  
  4443.         // Icon basename - extension = MIME wildcard
  4444.         foreach ( $icon_files as $file => $uri )
  4445.             $types[ preg_replace('/^([^.]*).*$/', '$1', basename($file)) ] =& $icon_files[$file];
  4446.  
  4447.         if ( ! empty($mime) ) {
  4448.             $post_mimes[] = substr($mime, 0, strpos($mime, '/'));
  4449.             $post_mimes[] = substr($mime, strpos($mime, '/') + 1);
  4450.             $post_mimes[] = str_replace('/', '_', $mime);
  4451.         }
  4452.  
  4453.         $matches = wp_match_mime_types(array_keys($types), $post_mimes);
  4454.         $matches['default'] = array('default');
  4455.  
  4456.         foreach ( $matches as $match => $wilds ) {
  4457.             if ( isset($types[$wilds[0]])) {
  4458.                 $icon = $types[$wilds[0]];
  4459.                 if ( !is_numeric($mime) )
  4460.                     wp_cache_add("mime_type_icon_$mime", $icon);
  4461.                 break;
  4462.             }
  4463.         }
  4464.     }
  4465.  
  4466.     return apply_filters( 'wp_mime_type_icon', $icon, $mime, $post_id ); // Last arg is 0 if function pass mime type.
  4467. }
  4468.  
  4469. /**
  4470.  * Checked for changed slugs for published post objects and save the old slug.
  4471.  *
  4472.  * The function is used when a post object of any type is updated,
  4473.  * by comparing the current and previous post objects.
  4474.  *
  4475.  * If the slug was changed and not already part of the old slugs then it will be
  4476.  * added to the post meta field ('_wp_old_slug') for storing old slugs for that
  4477.  * post.
  4478.  *
  4479.  * The most logically usage of this function is redirecting changed post objects, so
  4480.  * that those that linked to an changed post will be redirected to the new post.
  4481.  *
  4482.  * @since 2.1.0
  4483.  *
  4484.  * @param int $post_id Post ID.
  4485.  * @param object $post The Post Object
  4486.  * @param object $post_before The Previous Post Object
  4487.  * @return int Same as $post_id
  4488.  */
  4489. function wp_check_for_changed_slugs($post_id, $post, $post_before) {
  4490.     // dont bother if it hasnt changed
  4491.     if ( $post->post_name == $post_before->post_name )
  4492.         return;
  4493.  
  4494.     // we're only concerned with published, non-hierarchical objects
  4495.     if ( $post->post_status != 'publish' || is_post_type_hierarchical( $post->post_type ) )
  4496.         return;
  4497.  
  4498.     $old_slugs = (array) get_post_meta($post_id, '_wp_old_slug');
  4499.  
  4500.     // if we haven't added this old slug before, add it now
  4501.     if ( !empty( $post_before->post_name ) && !in_array($post_before->post_name, $old_slugs) )
  4502.         add_post_meta($post_id, '_wp_old_slug', $post_before->post_name);
  4503.  
  4504.     // if the new slug was used previously, delete it from the list
  4505.     if ( in_array($post->post_name, $old_slugs) )
  4506.         delete_post_meta($post_id, '_wp_old_slug', $post->post_name);
  4507. }
  4508.  
  4509. /**
  4510.  * Retrieve the private post SQL based on capability.
  4511.  *
  4512.  * This function provides a standardized way to appropriately select on the
  4513.  * post_status of a post type. The function will return a piece of SQL code
  4514.  * that can be added to a WHERE clause; this SQL is constructed to allow all
  4515.  * published posts, and all private posts to which the user has access.
  4516.  *
  4517.  * @since 2.2.0
  4518.  *
  4519.  * @param string $post_type currently only supports 'post' or 'page'.
  4520.  * @return string SQL code that can be added to a where clause.
  4521.  */
  4522. function get_private_posts_cap_sql( $post_type ) {
  4523.     return get_posts_by_author_sql( $post_type, false );
  4524. }
  4525.  
  4526. /**
  4527.  * Retrieve the post SQL based on capability, author, and type.
  4528.  *
  4529.  * @see get_private_posts_cap_sql() for full description.
  4530.  *
  4531.  * @since 3.0.0
  4532.  * @param string $post_type Post type.
  4533.  * @param bool $full Optional. Returns a full WHERE statement instead of just an 'andalso' term.
  4534.  * @param int $post_author Optional. Query posts having a single author ID.
  4535.  * @param bool $public_only Optional. Only return public posts. Skips cap checks for $current_user.  Default is false.
  4536.  * @return string SQL WHERE code that can be added to a query.
  4537.  */
  4538. function get_posts_by_author_sql( $post_type, $full = true, $post_author = null, $public_only = false ) {
  4539.     global $wpdb;
  4540.  
  4541.     // Private posts
  4542.     $post_type_obj = get_post_type_object( $post_type );
  4543.     if ( ! $post_type_obj )
  4544.         return $full ? 'WHERE 1 = 0' : ' 1 = 0 ';
  4545.  
  4546.     // This hook is deprecated. Why you'd want to use it, I dunno.
  4547.     if ( ! $cap = apply_filters( 'pub_priv_sql_capability', '' ) )
  4548.         $cap = $post_type_obj->cap->read_private_posts;
  4549.  
  4550.     if ( $full ) {
  4551.         if ( null === $post_author ) {
  4552.             $sql = $wpdb->prepare( 'WHERE post_type = %s AND ', $post_type );
  4553.         } else {
  4554.             $sql = $wpdb->prepare( 'WHERE post_author = %d AND post_type = %s AND ', $post_author, $post_type );
  4555.         }
  4556.     } else {
  4557.         $sql = '';
  4558.     }
  4559.  
  4560.     $sql .= "(post_status = 'publish'";
  4561.  
  4562.     // Only need to check the cap if $public_only is false
  4563.     if ( false === $public_only ) {
  4564.         if ( current_user_can( $cap ) ) {
  4565.             // Does the user have the capability to view private posts? Guess so.
  4566.             $sql .= " OR post_status = 'private'";
  4567.         } elseif ( is_user_logged_in() ) {
  4568.             // Users can view their own private posts.
  4569.             $id = get_current_user_id();
  4570.             if ( null === $post_author || ! $full ) {
  4571.                 $sql .= " OR post_status = 'private' AND post_author = $id";
  4572.             } elseif ( $id == (int) $post_author ) {
  4573.                 $sql .= " OR post_status = 'private'";
  4574.             } // else none
  4575.         } // else none
  4576.     }
  4577.  
  4578.     $sql .= ')';
  4579.  
  4580.     return $sql;
  4581. }
  4582.  
  4583. /**
  4584.  * Retrieve the date that the last post was published.
  4585.  *
  4586.  * The server timezone is the default and is the difference between GMT and
  4587.  * server time. The 'blog' value is the date when the last post was posted. The
  4588.  * 'gmt' is when the last post was posted in GMT formatted date.
  4589.  *
  4590.  * @since 0.71
  4591.  *
  4592.  * @uses apply_filters() Calls 'get_lastpostdate' filter
  4593.  *
  4594.  * @param string $timezone The location to get the time. Can be 'gmt', 'blog', or 'server'.
  4595.  * @return string The date of the last post.
  4596.  */
  4597. function get_lastpostdate($timezone = 'server') {
  4598.     return apply_filters( 'get_lastpostdate', _get_last_post_time( $timezone, 'date' ), $timezone );
  4599. }
  4600.  
  4601. /**
  4602.  * Retrieve last post modified date depending on timezone.
  4603.  *
  4604.  * The server timezone is the default and is the difference between GMT and
  4605.  * server time. The 'blog' value is just when the last post was modified. The
  4606.  * 'gmt' is when the last post was modified in GMT time.
  4607.  *
  4608.  * @since 1.2.0
  4609.  * @uses apply_filters() Calls 'get_lastpostmodified' filter
  4610.  *
  4611.  * @param string $timezone The location to get the time. Can be 'gmt', 'blog', or 'server'.
  4612.  * @return string The date the post was last modified.
  4613.  */
  4614. function get_lastpostmodified($timezone = 'server') {
  4615.     $lastpostmodified = _get_last_post_time( $timezone, 'modified' );
  4616.  
  4617.     $lastpostdate = get_lastpostdate($timezone);
  4618.     if ( $lastpostdate > $lastpostmodified )
  4619.         $lastpostmodified = $lastpostdate;
  4620.  
  4621.     return apply_filters( 'get_lastpostmodified', $lastpostmodified, $timezone );
  4622. }
  4623.  
  4624. /**
  4625.  * Retrieve latest post date data based on timezone.
  4626.  *
  4627.  * @access private
  4628.  * @since 3.1.0
  4629.  *
  4630.  * @param string $timezone The location to get the time. Can be 'gmt', 'blog', or 'server'.
  4631.  * @param string $field Field to check. Can be 'date' or 'modified'.
  4632.  * @return string The date.
  4633.  */
  4634. function _get_last_post_time( $timezone, $field ) {
  4635.     global $wpdb;
  4636.  
  4637.     if ( !in_array( $field, array( 'date', 'modified' ) ) )
  4638.         return false;
  4639.  
  4640.     $timezone = strtolower( $timezone );
  4641.  
  4642.     $key = "lastpost{$field}:$timezone";
  4643.  
  4644.     $date = wp_cache_get( $key, 'timeinfo' );
  4645.  
  4646.     if ( !$date ) {
  4647.         $add_seconds_server = date('Z');
  4648.  
  4649.         $post_types = get_post_types( array( 'public' => true ) );
  4650.         array_walk( $post_types, array( &$wpdb, 'escape_by_ref' ) );
  4651.         $post_types = "'" . implode( "', '", $post_types ) . "'";
  4652.  
  4653.         switch ( $timezone ) {
  4654.             case 'gmt':
  4655.                 $date = $wpdb->get_var("SELECT post_{$field}_gmt FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
  4656.                 break;
  4657.             case 'blog':
  4658.                 $date = $wpdb->get_var("SELECT post_{$field} FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
  4659.                 break;
  4660.             case 'server':
  4661.                 $date = $wpdb->get_var("SELECT DATE_ADD(post_{$field}_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
  4662.                 break;
  4663.         }
  4664.  
  4665.         if ( $date )
  4666.             wp_cache_set( $key, $date, 'timeinfo' );
  4667.     }
  4668.  
  4669.     return $date;
  4670. }
  4671.  
  4672. /**
  4673.  * Updates posts in cache.
  4674.  *
  4675.  * @package WordPress
  4676.  * @subpackage Cache
  4677.  * @since 1.5.1
  4678.  *
  4679.  * @param array $posts Array of post objects
  4680.  */
  4681. function update_post_cache( &$posts ) {
  4682.     if ( ! $posts )
  4683.         return;
  4684.  
  4685.     foreach ( $posts as $post )
  4686.         wp_cache_add( $post->ID, $post, 'posts' );
  4687. }
  4688.  
  4689. /**
  4690.  * Will clean the post in the cache.
  4691.  *
  4692.  * Cleaning means delete from the cache of the post. Will call to clean the term
  4693.  * object cache associated with the post ID.
  4694.  *
  4695.  * This function not run if $_wp_suspend_cache_invalidation is not empty. See
  4696.  * wp_suspend_cache_invalidation().
  4697.  *
  4698.  * @package WordPress
  4699.  * @subpackage Cache
  4700.  * @since 2.0.0
  4701.  *
  4702.  * @uses do_action() Calls 'clean_post_cache' on $id before adding children (if any).
  4703.  *
  4704.  * @param int|object $post Post ID or object to remove from the cache
  4705.  */
  4706. function clean_post_cache( $post ) {
  4707.     global $_wp_suspend_cache_invalidation, $wpdb;
  4708.  
  4709.     if ( ! empty( $_wp_suspend_cache_invalidation ) )
  4710.         return;
  4711.  
  4712.     $post = get_post( $post );
  4713.     if ( empty( $post ) )
  4714.         return;
  4715.  
  4716.     wp_cache_delete( $post->ID, 'posts' );
  4717.     wp_cache_delete( $post->ID, 'post_meta' );
  4718.  
  4719.     clean_object_term_cache( $post->ID, $post->post_type );
  4720.  
  4721.     wp_cache_delete( 'wp_get_archives', 'general' );
  4722.  
  4723.     do_action( 'clean_post_cache', $post->ID, $post );
  4724.  
  4725.     if ( is_post_type_hierarchical( $post->post_type ) )
  4726.         wp_cache_delete( 'get_pages', 'posts' );
  4727.  
  4728.     if ( 'page' == $post->post_type ) {
  4729.         wp_cache_delete( 'all_page_ids', 'posts' );
  4730.         do_action( 'clean_page_cache', $post->ID );
  4731.     }
  4732.  
  4733.     wp_cache_set( 'last_changed', microtime(), 'posts' );
  4734. }
  4735.  
  4736. /**
  4737.  * Call major cache updating functions for list of Post objects.
  4738.  *
  4739.  * @package WordPress
  4740.  * @subpackage Cache
  4741.  * @since 1.5.0
  4742.  *
  4743.  * @uses update_post_cache()
  4744.  * @uses update_object_term_cache()
  4745.  * @uses update_postmeta_cache()
  4746.  *
  4747.  * @param array $posts Array of Post objects
  4748.  * @param string $post_type The post type of the posts in $posts. Default is 'post'.
  4749.  * @param bool $update_term_cache Whether to update the term cache. Default is true.
  4750.  * @param bool $update_meta_cache Whether to update the meta cache. Default is true.
  4751.  */
  4752. function update_post_caches(&$posts, $post_type = 'post', $update_term_cache = true, $update_meta_cache = true) {
  4753.     // No point in doing all this work if we didn't match any posts.
  4754.     if ( !$posts )
  4755.         return;
  4756.  
  4757.     update_post_cache($posts);
  4758.  
  4759.     $post_ids = array();
  4760.     foreach ( $posts as $post )
  4761.         $post_ids[] = $post->ID;
  4762.  
  4763.     if ( ! $post_type )
  4764.         $post_type = 'any';
  4765.  
  4766.     if ( $update_term_cache ) {
  4767.         if ( is_array($post_type) ) {
  4768.             $ptypes = $post_type;
  4769.         } elseif ( 'any' == $post_type ) {
  4770.             // Just use the post_types in the supplied posts.
  4771.             foreach ( $posts as $post )
  4772.                 $ptypes[] = $post->post_type;
  4773.             $ptypes = array_unique($ptypes);
  4774.         } else {
  4775.             $ptypes = array($post_type);
  4776.         }
  4777.  
  4778.         if ( ! empty($ptypes) )
  4779.             update_object_term_cache($post_ids, $ptypes);
  4780.     }
  4781.  
  4782.     if ( $update_meta_cache )
  4783.         update_postmeta_cache($post_ids);
  4784. }
  4785.  
  4786. /**
  4787.  * Updates metadata cache for list of post IDs.
  4788.  *
  4789.  * Performs SQL query to retrieve the metadata for the post IDs and updates the
  4790.  * metadata cache for the posts. Therefore, the functions, which call this
  4791.  * function, do not need to perform SQL queries on their own.
  4792.  *
  4793.  * @package WordPress
  4794.  * @subpackage Cache
  4795.  * @since 2.1.0
  4796.  *
  4797.  * @param array $post_ids List of post IDs.
  4798.  * @return bool|array Returns false if there is nothing to update or an array of metadata.
  4799.  */
  4800. function update_postmeta_cache($post_ids) {
  4801.     return update_meta_cache('post', $post_ids);
  4802. }
  4803.  
  4804. /**
  4805.  * Will clean the attachment in the cache.
  4806.  *
  4807.  * Cleaning means delete from the cache. Optionally will clean the term
  4808.  * object cache associated with the attachment ID.
  4809.  *
  4810.  * This function will not run if $_wp_suspend_cache_invalidation is not empty. See
  4811.  * wp_suspend_cache_invalidation().
  4812.  *
  4813.  * @package WordPress
  4814.  * @subpackage Cache
  4815.  * @since 3.0.0
  4816.  *
  4817.  * @uses do_action() Calls 'clean_attachment_cache' on $id.
  4818.  *
  4819.  * @param int $id The attachment ID in the cache to clean
  4820.  * @param bool $clean_terms optional. Whether to clean terms cache
  4821.  */
  4822. function clean_attachment_cache($id, $clean_terms = false) {
  4823.     global $_wp_suspend_cache_invalidation;
  4824.  
  4825.     if ( !empty($_wp_suspend_cache_invalidation) )
  4826.         return;
  4827.  
  4828.     $id = (int) $id;
  4829.  
  4830.     wp_cache_delete($id, 'posts');
  4831.     wp_cache_delete($id, 'post_meta');
  4832.  
  4833.     if ( $clean_terms )
  4834.         clean_object_term_cache($id, 'attachment');
  4835.  
  4836.     do_action('clean_attachment_cache', $id);
  4837. }
  4838.  
  4839. //
  4840. // Hooks
  4841. //
  4842.  
  4843. /**
  4844.  * Hook for managing future post transitions to published.
  4845.  *
  4846.  * @since 2.3.0
  4847.  * @access private
  4848.  * @uses $wpdb
  4849.  * @uses do_action() Calls 'private_to_published' on post ID if this is a 'private_to_published' call.
  4850.  * @uses wp_clear_scheduled_hook() with 'publish_future_post' and post ID.
  4851.  *
  4852.  * @param string $new_status New post status
  4853.  * @param string $old_status Previous post status
  4854.  * @param object $post Object type containing the post information
  4855.  */
  4856. function _transition_post_status($new_status, $old_status, $post) {
  4857.     global $wpdb;
  4858.  
  4859.     if ( $old_status != 'publish' && $new_status == 'publish' ) {
  4860.         // Reset GUID if transitioning to publish and it is empty
  4861.         if ( '' == get_the_guid($post->ID) )
  4862.             $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) );
  4863.         do_action('private_to_published', $post->ID);  // Deprecated, use private_to_publish
  4864.     }
  4865.  
  4866.     // If published posts changed clear the lastpostmodified cache
  4867.     if ( 'publish' == $new_status || 'publish' == $old_status) {
  4868.         foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
  4869.             wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' );
  4870.             wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' );
  4871.         }
  4872.     }
  4873.  
  4874.     // Always clears the hook in case the post status bounced from future to draft.
  4875.     wp_clear_scheduled_hook('publish_future_post', array( $post->ID ) );
  4876. }
  4877.  
  4878. /**
  4879.  * Hook used to schedule publication for a post marked for the future.
  4880.  *
  4881.  * The $post properties used and must exist are 'ID' and 'post_date_gmt'.
  4882.  *
  4883.  * @since 2.3.0
  4884.  * @access private
  4885.  *
  4886.  * @param int $deprecated Not used. Can be set to null. Never implemented.
  4887.  *   Not marked as deprecated with _deprecated_argument() as it conflicts with
  4888.  *   wp_transition_post_status() and the default filter for _future_post_hook().
  4889.  * @param object $post Object type containing the post information
  4890.  */
  4891. function _future_post_hook( $deprecated, $post ) {
  4892.     wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
  4893.     wp_schedule_single_event( strtotime( get_gmt_from_date( $post->post_date ) . ' GMT') , 'publish_future_post', array( $post->ID ) );
  4894. }
  4895.  
  4896. /**
  4897.  * Hook to schedule pings and enclosures when a post is published.
  4898.  *
  4899.  * @since 2.3.0
  4900.  * @access private
  4901.  * @uses XMLRPC_REQUEST and WP_IMPORTING constants.
  4902.  * @uses do_action() Calls 'xmlrpc_publish_post' on post ID if XMLRPC_REQUEST is defined.
  4903.  *
  4904.  * @param int $post_id The ID in the database table of the post being published
  4905.  */
  4906. function _publish_post_hook($post_id) {
  4907.     if ( defined('XMLRPC_REQUEST') )
  4908.         do_action('xmlrpc_publish_post', $post_id);
  4909.  
  4910.     if ( defined('WP_IMPORTING') )
  4911.         return;
  4912.  
  4913.     if ( get_option('default_pingback_flag') )
  4914.         add_post_meta( $post_id, '_pingme', '1' );
  4915.     add_post_meta( $post_id, '_encloseme', '1' );
  4916.  
  4917.     wp_schedule_single_event(time(), 'do_pings');
  4918. }
  4919.  
  4920. /**
  4921.  * Returns the post's parent's post_ID
  4922.  *
  4923.  * @since 3.1.0
  4924.  *
  4925.  * @param int $post_id
  4926.  *
  4927.  * @return int|bool false on error
  4928.  */
  4929. function wp_get_post_parent_id( $post_ID ) {
  4930.     $post = get_post( $post_ID );
  4931.     if ( !$post || is_wp_error( $post ) )
  4932.         return false;
  4933.     return (int) $post->post_parent;
  4934. }
  4935.  
  4936. /**
  4937.  * Checks the given subset of the post hierarchy for hierarchy loops.
  4938.  * Prevents loops from forming and breaks those that it finds.
  4939.  *
  4940.  * Attached to the wp_insert_post_parent filter.
  4941.  *
  4942.  * @since 3.1.0
  4943.  * @uses wp_find_hierarchy_loop()
  4944.  *
  4945.  * @param int $post_parent ID of the parent for the post we're checking.
  4946.  * @param int $post_ID ID of the post we're checking.
  4947.  *
  4948.  * @return int The new post_parent for the post.
  4949.  */
  4950. function wp_check_post_hierarchy_for_loops( $post_parent, $post_ID ) {
  4951.     // Nothing fancy here - bail
  4952.     if ( !$post_parent )
  4953.         return 0;
  4954.  
  4955.     // New post can't cause a loop
  4956.     if ( empty( $post_ID ) )
  4957.         return $post_parent;
  4958.  
  4959.     // Can't be its own parent
  4960.     if ( $post_parent == $post_ID )
  4961.         return 0;
  4962.  
  4963.     // Now look for larger loops
  4964.  
  4965.     if ( !$loop = wp_find_hierarchy_loop( 'wp_get_post_parent_id', $post_ID, $post_parent ) )
  4966.         return $post_parent; // No loop
  4967.  
  4968.     // Setting $post_parent to the given value causes a loop
  4969.     if ( isset( $loop[$post_ID] ) )
  4970.         return 0;
  4971.  
  4972.     // There's a loop, but it doesn't contain $post_ID. Break the loop.
  4973.     foreach ( array_keys( $loop ) as $loop_member )
  4974.         wp_update_post( array( 'ID' => $loop_member, 'post_parent' => 0 ) );
  4975.  
  4976.     return $post_parent;
  4977. }
  4978.  
  4979. /**
  4980.  * Sets a post thumbnail.
  4981.  *
  4982.  * @since 3.1.0
  4983.  *
  4984.  * @param int|object $post Post ID or object where thumbnail should be attached.
  4985.  * @param int $thumbnail_id Thumbnail to attach.
  4986.  * @return bool True on success, false on failure.
  4987.  */
  4988. function set_post_thumbnail( $post, $thumbnail_id ) {
  4989.     $post = get_post( $post );
  4990.     $thumbnail_id = absint( $thumbnail_id );
  4991.     if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
  4992.         if ( $thumbnail_html = wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) )
  4993.             return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
  4994.         else
  4995.             return delete_post_meta( $post->ID, '_thumbnail_id' );
  4996.     }
  4997.     return false;
  4998. }
  4999.  
  5000. /**
  5001.  * Removes a post thumbnail.
  5002.  *
  5003.  * @since 3.3.0
  5004.  *
  5005.  * @param int|object $post Post ID or object where thumbnail should be removed from.
  5006.  * @return bool True on success, false on failure.
  5007.  */
  5008. function delete_post_thumbnail( $post ) {
  5009.     $post = get_post( $post );
  5010.     if ( $post )
  5011.         return delete_post_meta( $post->ID, '_thumbnail_id' );
  5012.     return false;
  5013. }
  5014.  
  5015. /**
  5016.  * Deletes auto-drafts for new posts that are > 7 days old
  5017.  *
  5018.  * @since 3.4.0
  5019.  */
  5020. function wp_delete_auto_drafts() {
  5021.     global $wpdb;
  5022.  
  5023.     // Cleanup old auto-drafts more than 7 days old
  5024.     $old_posts = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date" );
  5025.     foreach ( (array) $old_posts as $delete )
  5026.         wp_delete_post( $delete, true ); // Force delete
  5027. }
  5028.  
  5029. /**
  5030.  * Update the custom taxonomies' term counts when a post's status is changed. For example, default posts term counts (for custom taxonomies) don't include private / draft posts.
  5031.  *
  5032.  * @access private
  5033.  * @param string $new_status
  5034.  * @param string $old_status
  5035.  * @param object $post
  5036.  * @since 3.3.0
  5037.  */
  5038. function _update_term_count_on_transition_post_status( $new_status, $old_status, $post ) {
  5039.     // Update counts for the post's terms.
  5040.     foreach ( (array) get_object_taxonomies( $post->post_type ) as $taxonomy ) {
  5041.         $tt_ids = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'tt_ids' ) );
  5042.         wp_update_term_count( $tt_ids, $taxonomy );
  5043.     }
  5044. }
  5045.  
  5046. /**
  5047.  * Adds any posts from the given ids to the cache that do not already exist in cache
  5048.  *
  5049.  * @since 3.4.0
  5050.  *
  5051.  * @access private
  5052.  *
  5053.  * @param array $post_ids ID list
  5054.  * @param bool $update_term_cache Whether to update the term cache. Default is true.
  5055.  * @param bool $update_meta_cache Whether to update the meta cache. Default is true.
  5056.  */
  5057. function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) {
  5058.     global $wpdb;
  5059.  
  5060.     $non_cached_ids = _get_non_cached_ids( $ids, 'posts' );
  5061.     if ( !empty( $non_cached_ids ) ) {
  5062.         $fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", join( ",", $non_cached_ids ) ) );
  5063.  
  5064.         update_post_caches( $fresh_posts, 'any', $update_term_cache, $update_meta_cache );
  5065.     }
  5066. }
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