WordPress MetaBoxes Adaptation

<?php

global $my_options;

/* ********************************************** */
/* Add Post Meta Boxes  */
/* adapted from: http://www.deluxeblogtips.com/2010/05/howto-meta-box-wordpress.html
/* ********************************************** */

/*********************************
Gets Cform form names from cforms meta data
**********************************/

$cform_settings = get_option('cforms_settings'); //call cforms meta data
$num_items = count($cform_settings); // counts the number of items (arrays) in the array
$num_forms = $num_items -1; //since first array is [global] it can be subtracted to determin # of saved forms
$cforms = array(); //my array with only the form ID# and names
$i=1;
while ($i<= $num_forms) { //while loop to populate my array
$key1 = "form".$i;
$key2 = "cforms".$i."_fname"; //forms are defined by meta data $cforms[form#][cforms#_fname]
if ($i==1) {
    $key1 = "form";  //first form is defined by meta data $cforms[form][cforms_fname]
    $key2 = "cforms_fname";
    }

$form_name = $cform_settings[$key1][$key2] ; //pulls name of form from meta data

$add = array('desc'=>$form_name,'value'=>$i);  //create subarray of name and value info
$cforms[] = $add;   //adds subarray to main $cforms array
    $i++;
    }

/******************************

Edit meta box settings here

******************************/

$prefix = '_dbt_';

$meta_boxes = array();

// first meta box

 $post_id = $_GET['post'] ? $_GET['post'] : $_POST['post_ID'] ;
 $template_file = get_post_meta($post_id,'_wp_page_template',TRUE);

 if ($template_file == 'landingpage.php') {

$meta_boxes[] = array(
    'id' => 'my-meta-box-1',
    'title' => 'Landing Page Elements',
    'pages' => array('post', 'page', 'link'), // multiple post types
    'context' => 'side',
    'priority' => 'low',
    'fields' => array(
        array(
            'name' => 'Contact Form',
            'desc' => 'Enter the CForm ID number to add a CForm to the landing page',
            'id' => $prefix . 'cform_id',
            'type' => 'select2',
            'options' => $cforms,
            'std' => ''
        ),
        array(
            'name' => 'Headline',
            'desc' => 'Enter the heading you\'d like to appear before the video',
            'id' => $prefix . 'heading1',
            'type' => 'text',
            'std' => ''
        ),
        /* array(
            'name' => 'Textarea',
            'desc' => 'Enter big text here',
            'id' => $prefix . 'textarea',
            'type' => 'textarea',
            'std' => 'Default value 2'
        ) */
    )
);

} //end if statement

// second meta box
/*
$meta_boxes[] = array(
    'id' => 'my-meta-box-2',
    'title' => 'Custom meta box 2',
    'pages' => array('post', 'link', 'film', 'album'), // custom post type
    'context' => 'normal',
    'priority' => 'high',
    'fields' => array(
        array(
            'name' => 'Select box',
            'id' => $prefix . 'select',
            'type' => 'select',
            'options' => array('Option 1', 'Option 2', 'Option 3')
        ),
        array(
            'name' => 'Radio',
            'id' => $prefix . 'radio',
            'type' => 'radio',
            'options' => array(
                array('name' => 'Name 1', 'value' => 'Value 1'),
                array('name' => 'Name 2', 'value' => 'Value 2')
            )
        ),
        array(
            'name' => 'Checkbox',
            'id' => $prefix . 'checkbox',
            'type' => 'checkbox'
        )
    )
);
*/


/*********************************

You should not edit the code below

*********************************/

foreach ($meta_boxes as $meta_box) {
    $my_box = new My_meta_box($meta_box);
}

class My_meta_box {

    protected $_meta_box;

    // create meta box based on given data
    function __construct($meta_box) {
        $this->_meta_box = $meta_box;
        add_action('admin_menu', array(&$this, 'add'));

        add_action('save_post', array(&$this, 'save'));
    }

    /// Add meta box for multiple post types
    function add() {
        foreach ($this->_meta_box['pages'] as $page) {
            add_meta_box($this->_meta_box['id'], $this->_meta_box['title'], array(&$this, 'show'), $page, $this->_meta_box['context'], $this->_meta_box['priority']);
        }
    }

    // Callback function to show fields in meta box
    function show() {
        global $post;

        // Use nonce for verification
        echo '<input type="hidden" name="mytheme_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';

        echo '<table class="form-table">';

        foreach ($this->_meta_box['fields'] as $field) {
            // get current post meta data
            $meta = get_post_meta($post->ID, $field['id'], true);

            echo '<tr>',
                    '<th style="width:20%"><label for="', $field['id'], '">', $field['name'], '</label></th>',
                    '<td>';
            switch ($field['type']) {
                case 'text':
                    echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />',
                        '<br />', $field['desc'];
                    break;
                case 'textarea':
                    echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="4" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>',
                        '<br />', $field['desc'];
                    break;
                case 'select':
                    echo '<select name="', $field['id'], '" id="', $field['id'], '">';
                    foreach ($field['options'] as $option) {
                        echo '<option', $meta == $option ? ' selected="selected"' : '', '>', $option, '</option>';
                    }
                    echo '</select>';
                break;
                case 'select2': //for when value and display text don't match
                                //$options array must be multidimensional with both the 'value' and the 'text' for each option
                                //for example = array( array(text=>text1,value=>value1),array(text=>text2,value=>value2))
                                //then in <option> value = $option['value'] and text = $option['text']
                    echo '<select name="', $field['id'], '" id="', $field['id'], '">';
                    foreach ($field['options'] as $option) {
                        echo '<option value="',$option['value'],'"', $meta == $option['value'] ? ' selected="selected"' : '', '>', $option['desc'], '</option>';
                    }
                    echo '</select>';
                    break;
                case 'radio':
                    foreach ($field['options'] as $option) {
                        echo '<input type="radio" name="', $field['id'], '" value="', $option['value'], '"', $meta == $option['value'] ? ' checked="checked"' : '', ' />', $option['name'];
                    }
                    break;
                case 'checkbox':
                    echo '<input type="checkbox" name="', $field['id'], '" id="', $field['id'], '"', $meta ? ' checked="checked"' : '', ' />';
                    break;
            }
            echo    '<td>',
                '</tr>';
        }

        echo '</table>';
    }

    // Save data from meta box
    function save($post_id) {
        // verify nonce
        if (!wp_verify_nonce($_POST['mytheme_meta_box_nonce'], basename(__FILE__))) {
            return $post_id;
        }

        // check autosave
        if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
            return $post_id;
        }

        // check permissions
        if ('page' == $_POST['post_type']) {
            if (!current_user_can('edit_page', $post_id)) {
                return $post_id;
            }
        } elseif (!current_user_can('edit_post', $post_id)) {
            return $post_id;
        }

        foreach ($this->_meta_box['fields'] as $field) {
            $old = get_post_meta($post_id, $field['id'], true);
            $new = $_POST[$field['id']];

            if ($new && $new != $old) {
                update_post_meta($post_id, $field['id'], $new);
            } elseif ('' == $new && $old) {
                delete_post_meta($post_id, $field['id'], $old);
            }
        }
    }
}