Meta Boxes

<?php function post_save_details(){
  global $post;

  if ( ! wp_verify_nonce( $_POST['recipes_subtitle'], 'recipes_subtitle', 'recipes_subtitle' ) )
    return;

    $ingredients = array();
    for ( $i = 0, $j = min( count( $_POST['recipe_ingredients']), count( $_POST['recipe_qty'] ) ); $i < $j; $i++ ) {
        if ( empty( $_POST['recipe_ingredients'] ) )
            continue;
        $ingredients[] = array( $_POST['recipe_ingredients'][ $i ], $_POST['recipe_qty'][ $i ] );
    }
    update_post_meta( $post->ID, '_recipe_ingredients', $ingredients );

  update_post_meta($post->ID, "sub", $_POST["sub"]);
  update_post_meta($post->ID, "notes", $_POST["notes"]);
  update_post_meta($post->ID, "directions", $_POST["directions"]);
  update_post_meta($post->ID, "serving", $_POST["serving"]);

}

function recipe_admin_init(){
  add_meta_box("sub-meta", "Sub Title", "recipe_sub", "post", "side", "high");
  add_meta_box("notes_meta", "Notes and Directions", "recipe_notesandmethods_meta", "post", "normal", "high");
  add_meta_box("recipe_meta", "Ingredients And Qty.", "recipe_ingqty_meta", "post", "normal", "high");
  add_action( 'admin_footer-post.php', 'recipe_post_scripts' );
  add_action( 'admin_footer-post-new.php', 'recipe_post_scripts' );
}

function recipe_sub(){
  global $post;
  $custom = get_post_custom($post->ID);
  $sub = $custom["sub"][0];
  wp_nonce_field( 'recipes_subtitle', 'recipes_subtitle' );
  ?>
  <label>Sub Title: </label>
  <input type="text" name="sub" value="<?php echo $sub; ?>" />
  <?php
}

function recipe_notesandmethods_meta() {
  global $post;
  $custom = get_post_custom($post->ID);
  $notes = $custom["notes"][0];
  $serving = $custom["serving"][0];
  $directions = $custom["directions"][0];
  ?>
  <table>
    <tr>
    <td style="vertical-align: top;"><label>Notes: </label></td>
    <td><textarea cols="50" rows="10" type="text" name="notes"><?php echo $notes;?></textarea></td>
    </tr>
    <tr>
    <td style="vertical-align: top;"><label>Serving size: </label></td>
    <td><input type="text" name="serving" value="<?php echo $serving; ?>" /></td>
    </tr>
    <tr>
    <td style="vertical-align: top;"><label>Method: </label></td>
    <td><textarea cols="50" rows="10" type="text" name="directions"><?php echo $directions;?></textarea></td>
    </tr>
  </table>
 <?php
}

function recipe_ingqty_meta() {
    global $post;
    $ingredients = get_post_meta( $post->ID, '_recipe_ingredients', true );
    echo '<div id="recipe_ingredients">';
    foreach ( $ingredients as $ingredient ) {
        echo '<p><label>Ingredient: <input name="recipe_ingredients[]" type="text" value="' . esc_attr( $ingredient[ 0 ] ) . '" /></label>';
        echo ' <label>Qty: <input name="recipe_qty[]" type="text" value="' . esc_attr( $ingredient[ 1 ] ) . '" /></label> <a href="#" class="remove button">Remove</a></p>';
    }
    echo '</div><p><a href="#" class="button-primary" id="recipe_new_ingredient">New ingredient</a></p>';
}

function recipe_post_scripts() {
    if ( $GLOBALS['post_type'] != 'post' )
        return;
$js = <<<JS
<script type="text/javascript">
jQuery(document).ready( function($) {
    $('#recipe_new_ingredient').click( function() {
        $('#recipe_ingredients').append( '<p><label>Ingredient: <input name="recipe_ingredients[]" type="text" /></label> <label>Qty: <input name="recipe_qty[]" type="text" /></label> <a href="#" class="remove button">Remove</a></p>' );
        return false;
    });
    $('#recipe_ingredients .remove').live('click', function() {
        $(this).parent().remove();
        return false;
    });
});
</script>
JS;
echo $js;
}

add_action( 'admin_init', 'add_recipe_ingqty_meta_box' );
function add_recipe_ingqty_meta_box() {
    add_meta_box( 'recipe_meta', 'Ingredients And Qty.', 'recipeingqty_meta', 'post', 'normal', 'high' );
    add_action( 'admin_footer-post.php', 'recipe_post_scripts' );
    add_action( 'admin_footer-post-new.php', 'recipe_post_scripts' );
}

add_action("admin_init", "recipe_admin_init");
add_action('save_post', 'post_save_details');

?>