enmi-conf.org: comparison wp/wp-includes/post.php

equal deleted inserted replaced

--1:000000000000
+:d970ebf37754
+<?php
+/**
+* Post functions and post utility function.
+*
+* @package WordPress
+* @subpackage Post
+* @since 1.5.0
+*/
+//
+// Post Type Registration
+//
+/**
+* Creates the initial post types when 'init' action is fired.
+*
+* @since 2.9.0
+*/
+function create_initial_post_types() {
+	register_post_type( 'post', array(
+		'labels' => array(
+			'name_admin_bar' => _x( 'Post', 'add new on admin bar' ),
+		),
+		'public'  => true,
+		'_builtin' => true, /* internal use only. don't use this when registering your own post type. */
+		'_edit_link' => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
+		'capability_type' => 'post',
+		'map_meta_cap' => true,
+		'hierarchical' => false,
+		'rewrite' => false,
+		'query_var' => false,
+		'delete_with_user' => true,
+		'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'trackbacks', 'custom-fields', 'comments', 'revisions', 'post-formats' ),
+	) );
+	register_post_type( 'page', array(
+		'labels' => array(
+			'name_admin_bar' => _x( 'Page', 'add new on admin bar' ),
+		),
+		'public' => true,
+		'publicly_queryable' => false,
+		'_builtin' => true, /* internal use only. don't use this when registering your own post type. */
+		'_edit_link' => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
+		'capability_type' => 'page',
+		'map_meta_cap' => true,
+		'hierarchical' => true,
+		'rewrite' => false,
+		'query_var' => false,
+		'delete_with_user' => true,
+		'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'page-attributes', 'custom-fields', 'comments', 'revisions' ),
+	) );
+	register_post_type( 'attachment', array(
+		'labels' => array(
+			'name' => _x('Media', 'post type general name'),
+			'name_admin_bar' => _x( 'Media', 'add new from admin bar' ),
+			'add_new' => _x( 'Add New', 'add new media' ),
+			'edit_item' => __( 'Edit Media' ),
+			'view_item' => __( 'View Attachment Page' ),
+		),
+		'public' => true,
+		'show_ui' => true,
+		'_builtin' => true, /* internal use only. don't use this when registering your own post type. */
+		'_edit_link' => 'post.php?post=%d', /* internal use only. don't use this when registering your own post type. */
+		'capability_type' => 'post',
+		'capabilities' => array(
+			'create_posts' => 'upload_files',
+		),
+		'map_meta_cap' => true,
+		'hierarchical' => false,
+		'rewrite' => false,
+		'query_var' => false,
+		'show_in_nav_menus' => false,
+		'delete_with_user' => true,
+		'supports' => array( 'title', 'author', 'comments' ),
+	) );
+	register_post_type( 'revision', array(
+		'labels' => array(
+			'name' => __( 'Revisions' ),
+			'singular_name' => __( 'Revision' ),
+		),
+		'public' => false,
+		'_builtin' => true, /* internal use only. don't use this when registering your own post type. */
+		'_edit_link' => 'revision.php?revision=%d', /* internal use only. don't use this when registering your own post type. */
+		'capability_type' => 'post',
+		'map_meta_cap' => true,
+		'hierarchical' => false,
+		'rewrite' => false,
+		'query_var' => false,
+		'can_export' => false,
+		'delete_with_user' => true,
+		'supports' => array( 'author' ),
+	) );
+	register_post_type( 'nav_menu_item', array(
+		'labels' => array(
+			'name' => __( 'Navigation Menu Items' ),
+			'singular_name' => __( 'Navigation Menu Item' ),
+		),
+		'public' => false,
+		'_builtin' => true, /* internal use only. don't use this when registering your own post type. */
+		'hierarchical' => false,
+		'rewrite' => false,
+		'delete_with_user' => false,
+		'query_var' => false,
+	) );
+	register_post_status( 'publish', array(
+		'label'       => _x( 'Published', 'post' ),
+		'public'      => true,
+		'_builtin'    => true, /* internal use only. */
+		'label_count' => _n_noop( 'Published <span class="count">(%s)</span>', 'Published <span class="count">(%s)</span>' ),
+	) );
+	register_post_status( 'future', array(
+		'label'       => _x( 'Scheduled', 'post' ),
+		'protected'   => true,
+		'_builtin'    => true, /* internal use only. */
+		'label_count' => _n_noop('Scheduled <span class="count">(%s)</span>', 'Scheduled <span class="count">(%s)</span>' ),
+	) );
+	register_post_status( 'draft', array(
+		'label'       => _x( 'Draft', 'post' ),
+		'protected'   => true,
+		'_builtin'    => true, /* internal use only. */
+		'label_count' => _n_noop( 'Draft <span class="count">(%s)</span>', 'Drafts <span class="count">(%s)</span>' ),
+	) );
+	register_post_status( 'pending', array(
+		'label'       => _x( 'Pending', 'post' ),
+		'protected'   => true,
+		'_builtin'    => true, /* internal use only. */
+		'label_count' => _n_noop( 'Pending <span class="count">(%s)</span>', 'Pending <span class="count">(%s)</span>' ),
+	) );
+	register_post_status( 'private', array(
+		'label'       => _x( 'Private', 'post' ),
+		'private'     => true,
+		'_builtin'    => true, /* internal use only. */
+		'label_count' => _n_noop( 'Private <span class="count">(%s)</span>', 'Private <span class="count">(%s)</span>' ),
+	) );
+	register_post_status( 'trash', array(
+		'label'       => _x( 'Trash', 'post' ),
+		'internal'    => true,
+		'_builtin'    => true, /* internal use only. */
+		'label_count' => _n_noop( 'Trash <span class="count">(%s)</span>', 'Trash <span class="count">(%s)</span>' ),
+		'show_in_admin_status_list' => true,
+	) );
+	register_post_status( 'auto-draft', array(
+		'label'    => 'auto-draft',
+		'internal' => true,
+		'_builtin' => true, /* internal use only. */
+	) );
+	register_post_status( 'inherit', array(
+		'label'    => 'inherit',
+		'internal' => true,
+		'_builtin' => true, /* internal use only. */
+		'exclude_from_search' => false,
+	) );
+}
+add_action( 'init', 'create_initial_post_types', 0 ); // highest priority
+/**
+* Retrieve attached file path based on attachment ID.
+*
+* By default the path will go through the 'get_attached_file' filter, but
+* passing a true to the $unfiltered argument of get_attached_file() will
+* return the file path unfiltered.
+*
+* The function works by getting the single post meta name, named
+* '_wp_attached_file' and returning it. This is a convenience function to
+* prevent looking up the meta name and provide a mechanism for sending the
+* attached filename through a filter.
+*
+* @since 2.0.0
+*
+* @param int $attachment_id Attachment ID.
+* @param bool $unfiltered Whether to apply filters.
+* @return string|bool The file path to where the attached file should be, false otherwise.
+*/
+function get_attached_file( $attachment_id, $unfiltered = false ) {
+	$file = get_post_meta( $attachment_id, '_wp_attached_file', true );
+	// If the file is relative, prepend upload dir
+	if ( $file && 0 !== strpos($file, '/') && !preg_match('|^.:\\\|', $file) && ( ($uploads = wp_upload_dir()) && false === $uploads['error'] ) )
+		$file = $uploads['basedir'] . "/$file";
+	if ( $unfiltered )
+		return $file;
+	return apply_filters( 'get_attached_file', $file, $attachment_id );
+}
+/**
+* Update attachment file path based on attachment ID.
+*
+* Used to update the file path of the attachment, which uses post meta name
+* '_wp_attached_file' to store the path of the attachment.
+*
+* @since 2.1.0
+* @uses apply_filters() Calls 'update_attached_file' on file path and attachment ID.
+*
+* @param int $attachment_id Attachment ID
+* @param string $file File path for the attachment
+* @return bool True on success, false on failure.
+*/
+function update_attached_file( $attachment_id, $file ) {
+	if ( !get_post( $attachment_id ) )
+		return false;
+	$file = apply_filters( 'update_attached_file', $file, $attachment_id );
+	if ( $file = _wp_relative_upload_path( $file ) )
+		return update_post_meta( $attachment_id, '_wp_attached_file', $file );
+	else
+		return delete_post_meta( $attachment_id, '_wp_attached_file' );
+}
+/**
+* Return relative path to an uploaded file.
+*
+* The path is relative to the current upload dir.
+*
+* @since 2.9.0
+* @uses apply_filters() Calls '_wp_relative_upload_path' on file path.
+*
+* @param string $path Full path to the file
+* @return string relative path on success, unchanged path on failure.
+*/
+function _wp_relative_upload_path( $path ) {
+	$new_path = $path;
+	$uploads = wp_upload_dir();
+	if ( 0 === strpos( $new_path, $uploads['basedir'] ) ) {
+			$new_path = str_replace( $uploads['basedir'], '', $new_path );
+			$new_path = ltrim( $new_path, '/' );
+	}
+	return apply_filters( '_wp_relative_upload_path', $new_path, $path );
+}
+/**
+* Retrieve all children of the post parent ID.
+*
+* Normally, without any enhancements, the children would apply to pages. In the
+* context of the inner workings of WordPress, pages, posts, and attachments
+* share the same table, so therefore the functionality could apply to any one
+* of them. It is then noted that while this function does not work on posts, it
+* does not mean that it won't work on posts. It is recommended that you know
+* what context you wish to retrieve the children of.
+*
+* Attachments may also be made the child of a post, so if that is an accurate
+* statement (which needs to be verified), it would then be possible to get
+* all of the attachments for a post. Attachments have since changed since
+* version 2.5, so this is most likely unaccurate, but serves generally as an
+* example of what is possible.
+*
+* The arguments listed as defaults are for this function and also of the
+* {@link get_posts()} function. The arguments are combined with the
+* get_children defaults and are then passed to the {@link get_posts()}
+* function, which accepts additional arguments. You can replace the defaults in
+* this function, listed below and the additional arguments listed in the
+* {@link get_posts()} function.
+*
+* The 'post_parent' is the most important argument and important attention
+* needs to be paid to the $args parameter. If you pass either an object or an
+* integer (number), then just the 'post_parent' is grabbed and everything else
+* is lost. If you don't specify any arguments, then it is assumed that you are
+* in The Loop and the post parent will be grabbed for from the current post.
+*
+* The 'post_parent' argument is the ID to get the children. The 'numberposts'
+* is the amount of posts to retrieve that has a default of '-1', which is
+* used to get all of the posts. Giving a number higher than 0 will only
+* retrieve that amount of posts.
+*
+* The 'post_type' and 'post_status' arguments can be used to choose what
+* criteria of posts to retrieve. The 'post_type' can be anything, but WordPress
+* post types are 'post', 'pages', and 'attachments'. The 'post_status'
+* argument will accept any post status within the write administration panels.
+*
+* @see get_posts() Has additional arguments that can be replaced.
+* @internal Claims made in the long description might be inaccurate.
+*
+* @since 2.0.0
+*
+* @param mixed $args Optional. User defined arguments for replacing the defaults.
+* @param string $output Optional. Constant for return type, either OBJECT (default), ARRAY_A, ARRAY_N.
+* @return array|bool False on failure and the type will be determined by $output parameter.
+*/
+function get_children($args = '', $output = OBJECT) {
+	$kids = array();
+	if ( empty( $args ) ) {
+		if ( isset( $GLOBALS['post'] ) ) {
+			$args = array('post_parent' => (int) $GLOBALS['post']->post_parent );
+		} else {
+			return $kids;
+		}
+	} elseif ( is_object( $args ) ) {
+		$args = array('post_parent' => (int) $args->post_parent );
+	} elseif ( is_numeric( $args ) ) {
+		$args = array('post_parent' => (int) $args);
+	}
+	$defaults = array(
+		'numberposts' => -1, 'post_type' => 'any',
+		'post_status' => 'any', 'post_parent' => 0,
+	);
+	$r = wp_parse_args( $args, $defaults );
+	$children = get_posts( $r );
+	if ( ! $children )
+		return $kids;
+	if ( ! empty( $r['fields'] ) )
+		return $children;
+	update_post_cache($children);
+	foreach ( $children as $key => $child )
+		$kids[$child->ID] = $children[$key];
+	if ( $output == OBJECT ) {
+		return $kids;
+	} elseif ( $output == ARRAY_A ) {
+		foreach ( (array) $kids as $kid )
+			$weeuns[$kid->ID] = get_object_vars($kids[$kid->ID]);
+		return $weeuns;
+	} elseif ( $output == ARRAY_N ) {
+		foreach ( (array) $kids as $kid )
+			$babes[$kid->ID] = array_values(get_object_vars($kids[$kid->ID]));
+		return $babes;
+	} else {
+		return $kids;
+	}
+}
+/**
+* Get extended entry info (<!--more-->).
+*
+* There should not be any space after the second dash and before the word
+* 'more'. There can be text or space(s) after the word 'more', but won't be
+* referenced.
+*
+* The returned array has 'main', 'extended', and 'more_text' keys. Main has the text before
+* the <code><!--more--></code>. The 'extended' key has the content after the
+* <code><!--more--></code> comment. The 'more_text' key has the custom "Read More" text.
+*
+* @since 1.0.0
+*
+* @param string $post Post content.
+* @return array Post before ('main'), after ('extended'), and custom readmore ('more_text').
+*/
+function get_extended($post) {
+	//Match the new style more links
+	if ( preg_match('/<!--more(.*?)?-->/', $post, $matches) ) {
+		list($main, $extended) = explode($matches[0], $post, 2);
+		$more_text = $matches[1];
+	} else {
+		$main = $post;
+		$extended = '';
+		$more_text = '';
+	}
+	// ` leading and trailing whitespace
+	$main = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $main);
+	$extended = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $extended);
+	$more_text = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $more_text);
+	return array( 'main' => $main, 'extended' => $extended, 'more_text' => $more_text );
+}
+/**
+* Retrieves post data given a post ID or post object.
+*
+* See {@link sanitize_post()} for optional $filter values. Also, the parameter
+* $post, must be given as a variable, since it is passed by reference.
+*
+* @since 1.5.1
+* @link http://codex.wordpress.org/Function_Reference/get_post
+*
+* @param int|object $post Post ID or post object. Optional, default is the current post from the loop.
+* @param string $output Optional, default is Object. Either OBJECT, ARRAY_A, or ARRAY_N.
+* @param string $filter Optional, default is raw.
+* @return WP_Post|null WP_Post on success or null on failure
+*/
+function get_post( $post = null, $output = OBJECT, $filter = 'raw' ) {
+	if ( empty( $post ) && isset( $GLOBALS['post'] ) )
+		$post = $GLOBALS['post'];
+	if ( is_a( $post, 'WP_Post' ) ) {
+		$_post = $post;
+	} elseif ( is_object( $post ) ) {
+		if ( empty( $post->filter ) ) {
+			$_post = sanitize_post( $post, 'raw' );
+			$_post = new WP_Post( $_post );
+		} elseif ( 'raw' == $post->filter ) {
+			$_post = new WP_Post( $post );
+		} else {
+			$_post = WP_Post::get_instance( $post->ID );
+		}
+	} else {
+		$_post = WP_Post::get_instance( $post );
+	}
+	if ( ! $_post )
+		return null;
+	$_post = $_post->filter( $filter );
+	if ( $output == ARRAY_A )
+		return $_post->to_array();
+	elseif ( $output == ARRAY_N )
+		return array_values( $_post->to_array() );
+	return $_post;
+}
+/**
+* WordPress Post class.
+*
+* @since 3.5.0
+*
+*/
+final class WP_Post {
+	/**
+	 * Post ID.
+	 *
+	 * @var int
+	 */
+	public $ID;
+	/**
+	 * ID of post author.
+	 *
+	 * A numeric string, for compatibility reasons.
+	 *
+	 * @var string
+	 */
+	public $post_author = 0;
+	/**
+	 * The post's local publication time.
+	 *
+	 * @var string
+	 */
+	public $post_date = '0000-00-00 00:00:00';
+	/**
+	 * The post's GMT publication time.
+	 *
+	 * @var string
+	 */
+	public $post_date_gmt = '0000-00-00 00:00:00';
+	/**
+	 * The post's content.
+	 *
+	 * @var string
+	 */
+	public $post_content = '';
+	/**
+	 * The post's title.
+	 *
+	 * @var string
+	 */
+	public $post_title = '';
+	/**
+	 * The post's excerpt.
+	 *
+	 * @var string
+	 */
+	public $post_excerpt = '';
+	/**
+	 * The post's status.
+	 *
+	 * @var string
+	 */
+	public $post_status = 'publish';
+	/**
+	 * Whether comments are allowed.
+	 *
+	 * @var string
+	 */
+	public $comment_status = 'open';
+	/**
+	 * Whether pings are allowed.
+	 *
+	 * @var string
+	 */
+	public $ping_status = 'open';
+	/**
+	 * The post's password in plain text.
+	 *
+	 * @var string
+	 */
+	public $post_password = '';
+	/**
+	 * The post's slug.
+	 *
+	 * @var string
+	 */
+	public $post_name = '';
+	/**
+	 * URLs queued to be pinged.
+	 *
+	 * @var string
+	 */
+	public $to_ping = '';
+	/**
+	 * URLs that have been pinged.
+	 *
+	 * @var string
+	 */
+	public $pinged = '';
+	/**
+	 * The post's local modified time.
+	 *
+	 * @var string
+	 */
+	public $post_modified = '0000-00-00 00:00:00';
+	/**
+	 * The post's GMT modified time.
+	 *
+	 * @var string
+	 */
+	public $post_modified_gmt = '0000-00-00 00:00:00';
+	/**
+	 * A utility DB field for post content.
+	 *
+	 *
+	 * @var string
+	 */
+	public $post_content_filtered = '';
+	/**
+	 * ID of a post's parent post.
+	 *
+	 * @var int
+	 */
+	public $post_parent = 0;
+	/**
+	 * The unique identifier for a post, not necessarily a URL, used as the feed GUID.
+	 *
+	 * @var string
+	 */
+	public $guid = '';
+	/**
+	 * A field used for ordering posts.
+	 *
+	 * @var int
+	 */
+	public $menu_order = 0;
+	/**
+	 * The post's type, like post or page.
+	 *
+	 * @var string
+	 */
+	public $post_type = 'post';
+	/**
+	 * An attachment's mime type.
+	 *
+	 * @var string
+	 */
+	public $post_mime_type = '';
+	/**
+	 * Cached comment count.
+	 *
+	 * A numeric string, for compatibility reasons.
+	 *
+	 * @var string
+	 */
+	public $comment_count = 0;
+	/**
+	 * Stores the post object's sanitization level.
+	 *
+	 * Does not correspond to a DB field.
+	 *
+	 * @var string
+	 */
+	public $filter;
+	public static function get_instance( $post_id ) {
+		global $wpdb;
+		$post_id = (int) $post_id;
+		if ( ! $post_id )
+			return false;
+		$_post = wp_cache_get( $post_id, 'posts' );
+		if ( ! $_post ) {
+			$_post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d LIMIT 1", $post_id ) );
+			if ( ! $_post )
+				return false;
+			$_post = sanitize_post( $_post, 'raw' );
+			wp_cache_add( $_post->ID, $_post, 'posts' );
+		} elseif ( empty( $_post->filter ) ) {
+			$_post = sanitize_post( $_post, 'raw' );
+		}
+		return new WP_Post( $_post );
+	}
+	public function __construct( $post ) {
+		foreach ( get_object_vars( $post ) as $key => $value )
+			$this->$key = $value;
+	}
+	public function __isset( $key ) {
+		if ( 'ancestors' == $key )
+			return true;
+		if ( 'page_template' == $key )
+			return ( 'page' == $this->post_type );
+		if ( 'post_category' == $key )
+		   return true;
+		if ( 'tags_input' == $key )
+		   return true;
+		return metadata_exists( 'post', $this->ID, $key );
+	}
+	public function __get( $key ) {
+		if ( 'page_template' == $key && $this->__isset( $key ) ) {
+			return get_post_meta( $this->ID, '_wp_page_template', true );
+		}
+		if ( 'post_category' == $key ) {
+			if ( is_object_in_taxonomy( $this->post_type, 'category' ) )
+				$terms = get_the_terms( $this, 'category' );
+			if ( empty( $terms ) )
+				return array();
+			return wp_list_pluck( $terms, 'term_id' );
+		}
+		if ( 'tags_input' == $key ) {
+			if ( is_object_in_taxonomy( $this->post_type, 'post_tag' ) )
+				$terms = get_the_terms( $this, 'post_tag' );
+			if ( empty( $terms ) )
+				return array();
+			return wp_list_pluck( $terms, 'name' );
+		}
+		// Rest of the values need filtering
+		if ( 'ancestors' == $key )
+			$value = get_post_ancestors( $this );
+		else
+			$value = get_post_meta( $this->ID, $key, true );
+		if ( $this->filter )
+			$value = sanitize_post_field( $key, $value, $this->ID, $this->filter );
+		return $value;
+	}
+	public function filter( $filter ) {
+		if ( $this->filter == $filter )
+			return $this;
+		if ( $filter == 'raw' )
+			return self::get_instance( $this->ID );
+		return sanitize_post( $this, $filter );
+	}
+	public function to_array() {
+		$post = get_object_vars( $this );
+		foreach ( array( 'ancestors', 'page_template', 'post_category', 'tags_input' ) as $key ) {
+			if ( $this->__isset( $key ) )
+				$post[ $key ] = $this->__get( $key );
+		}
+		return $post;
+	}
+}
+/**
+* Retrieve ancestors of a post.
+*
+* @since 2.5.0
+*
+* @param int|object $post Post ID or post object
+* @return array Ancestor IDs or empty array if none are found.
+*/
+function get_post_ancestors( $post ) {
+	$post = get_post( $post );
+	if ( ! $post || empty( $post->post_parent ) || $post->post_parent == $post->ID )
+		return array();
+	$ancestors = array();
+	$id = $ancestors[] = $post->post_parent;
+	while ( $ancestor = get_post( $id ) ) {
+		// Loop detection: If the ancestor has been seen before, break.
+		if ( empty( $ancestor->post_parent ) || ( $ancestor->post_parent == $post->ID ) || in_array( $ancestor->post_parent, $ancestors ) )
+			break;
+		$id = $ancestors[] = $ancestor->post_parent;
+	}
+	return $ancestors;
+}
+/**
+* Retrieve data from a post field based on Post ID.
+*
+* Examples of the post field will be, 'post_type', 'post_status', 'post_content',
+* etc and based off of the post object property or key names.
+*
+* The context values are based off of the taxonomy filter functions and
+* supported values are found within those functions.
+*
+* @since 2.3.0
+* @uses sanitize_post_field() See for possible $context values.
+*
+* @param string $field Post field name.
+* @param int|object $post Post ID or post object.
+* @param string $context Optional. How to filter the field. Default is 'display'.
+* @return string The value of the post field on success, empty string on failure.
+*/
+function get_post_field( $field, $post, $context = 'display' ) {
+	$post = get_post( $post );
+	if ( !$post )
+		return '';
+	if ( !isset($post->$field) )
+		return '';
+	return sanitize_post_field($field, $post->$field, $post->ID, $context);
+}
+/**
+* Retrieve the mime type of an attachment based on the ID.
+*
+* This function can be used with any post type, but it makes more sense with
+* attachments.
+*
+* @since 2.0.0
+*
+* @param int $ID Optional. Post ID. Default is the current post from the loop.
+* @return string|bool The mime type on success, false on failure.
+*/
+function get_post_mime_type($ID = '') {
+	$post = get_post($ID);
+	if ( is_object($post) )
+		return $post->post_mime_type;
+	return false;
+}
+/**
+* Retrieve the post status based on the Post ID.
+*
+* If the post ID is of an attachment, then the parent post status will be given
+* instead.
+*
+* @since 2.0.0
+*
+* @param int $ID Optional. Post ID. Default is the current post from the loop.
+* @return string|bool Post status on success, false on failure.
+*/
+function get_post_status($ID = '') {
+	$post = get_post($ID);
+	if ( !is_object($post) )
+		return false;
+	if ( 'attachment' == $post->post_type ) {
+		if ( 'private' == $post->post_status )
+			return 'private';
+		// Unattached attachments are assumed to be published
+		if ( ( 'inherit' == $post->post_status ) && ( 0 == $post->post_parent) )
+			return 'publish';
+		// Inherit status from the parent
+		if ( $post->post_parent && ( $post->ID != $post->post_parent ) )
+			return get_post_status($post->post_parent);
+	}
+	return $post->post_status;
+}
+/**
+* Retrieve all of the WordPress supported post statuses.
+*
+* Posts have a limited set of valid status values, this provides the
+* post_status values and descriptions.
+*
+* @since 2.5.0
+*
+* @return array List of post statuses.
+*/
+function get_post_statuses() {
+	$status = array(
+		'draft'			=> __('Draft'),
+		'pending'		=> __('Pending Review'),
+		'private'		=> __('Private'),
+		'publish'		=> __('Published')
+	);
+	return $status;
+}
+/**
+* Retrieve all of the WordPress support page statuses.
+*
+* Pages have a limited set of valid status values, this provides the
+* post_status values and descriptions.
+*
+* @since 2.5.0
+*
+* @return array List of page statuses.
+*/
+function get_page_statuses() {
+	$status = array(
+		'draft'			=> __('Draft'),
+		'private'		=> __('Private'),
+		'publish'		=> __('Published')
+	);
+	return $status;
+}
+/**
+* Register a post status. Do not use before init.
+*
+* A simple function for creating or modifying a post status based on the
+* parameters given. The function will accept an array (second optional
+* parameter), along with a string for the post status name.
+*
+*
+* Optional $args contents:
+*
+* label - A descriptive name for the post status marked for translation. Defaults to $post_status.
+* public - Whether posts of this status should be shown in the front end of the site. Defaults to true.
+* exclude_from_search - Whether to exclude posts with this post status from search results. Defaults to false.
+* show_in_admin_all_list - Whether to include posts in the edit listing for their post type
+* show_in_admin_status_list - Show in the list of statuses with post counts at the top of the edit
+*                             listings, e.g. All (12) | Published (9) | My Custom Status (2) ...
+*
+* Arguments prefixed with an _underscore shouldn't be used by plugins and themes.
+*
+* @package WordPress
+* @subpackage Post
+* @since 3.0.0
+* @uses $wp_post_statuses Inserts new post status object into the list
+*
+* @param string $post_status Name of the post status.
+* @param array|string $args See above description.
+*/
+function register_post_status($post_status, $args = array()) {
+	global $wp_post_statuses;
+	if (!is_array($wp_post_statuses))
+		$wp_post_statuses = array();
+	// Args prefixed with an underscore are reserved for internal use.
+	$defaults = array(
+		'label' => false,
+		'label_count' => false,
+		'exclude_from_search' => null,
+		'_builtin' => false,
+		'public' => null,
+		'internal' => null,
+		'protected' => null,
+		'private' => null,
+		'publicly_queryable' => null,
+		'show_in_admin_status_list' => null,
+		'show_in_admin_all_list' => null,
+	);
+	$args = wp_parse_args($args, $defaults);
+	$args = (object) $args;
+	$post_status = sanitize_key($post_status);
+	$args->name = $post_status;
+	if ( null === $args->public && null === $args->internal && null === $args->protected && null === $args->private )
+		$args->internal = true;
+	if ( null === $args->public  )
+		$args->public = false;
+	if ( null === $args->private  )
+		$args->private = false;
+	if ( null === $args->protected  )
+		$args->protected = false;
+	if ( null === $args->internal  )
+		$args->internal = false;
+	if ( null === $args->publicly_queryable )
+		$args->publicly_queryable = $args->public;
+	if ( null === $args->exclude_from_search )
+		$args->exclude_from_search = $args->internal;
+	if ( null === $args->show_in_admin_all_list )
+		$args->show_in_admin_all_list = !$args->internal;
+	if ( null === $args->show_in_admin_status_list )
+		$args->show_in_admin_status_list = !$args->internal;
+	if ( false === $args->label )
+		$args->label = $post_status;
+	if ( false === $args->label_count )
+		$args->label_count = array( $args->label, $args->label );
+	$wp_post_statuses[$post_status] = $args;
+	return $args;
+}
+/**
+* Retrieve a post status object by name
+*
+* @package WordPress
+* @subpackage Post
+* @since 3.0.0
+* @uses $wp_post_statuses
+* @see register_post_status
+* @see get_post_statuses
+*
+* @param string $post_status The name of a registered post status
+* @return object A post status object
+*/
+function get_post_status_object( $post_status ) {
+	global $wp_post_statuses;
+	if ( empty($wp_post_statuses[$post_status]) )
+		return null;
+	return $wp_post_statuses[$post_status];
+}
+/**
+* Get a list of all registered post status objects.
+*
+* @package WordPress
+* @subpackage Post
+* @since 3.0.0
+* @uses $wp_post_statuses
+* @see register_post_status
+* @see get_post_status_object
+*
+* @param array|string $args An array of key => value arguments to match against the post status objects.
+* @param string $output The type of output to return, either post status 'names' or 'objects'. 'names' is the default.
+* @param string $operator The logical operation to perform. 'or' means only one element
+*  from the array needs to match; 'and' means all elements must match. The default is 'and'.
+* @return array A list of post status names or objects
+*/
+function get_post_stati( $args = array(), $output = 'names', $operator = 'and' ) {
+	global $wp_post_statuses;
+	$field = ('names' == $output) ? 'name' : false;
+	return wp_filter_object_list($wp_post_statuses, $args, $operator, $field);
+}
+/**
+* Whether the post type is hierarchical.
+*
+* A false return value might also mean that the post type does not exist.
+*
+* @since 3.0.0
+* @see get_post_type_object
+*
+* @param string $post_type Post type name
+* @return bool Whether post type is hierarchical.
+*/
+function is_post_type_hierarchical( $post_type ) {
+	if ( ! post_type_exists( $post_type ) )
+		return false;
+	$post_type = get_post_type_object( $post_type );
+	return $post_type->hierarchical;
+}
+/**
+* Checks if a post type is registered.
+*
+* @since 3.0.0
+* @uses get_post_type_object()
+*
+* @param string $post_type Post type name
+* @return bool Whether post type is registered.
+*/
+function post_type_exists( $post_type ) {
+	return (bool) get_post_type_object( $post_type );
+}
+/**
+* Retrieve the post type of the current post or of a given post.
+*
+* @since 2.1.0
+*
+* @param int|object $post Optional. Post ID or post object. Default is the current post from the loop.
+* @return string|bool Post type on success, false on failure.
+*/
+function get_post_type( $post = null ) {
+	if ( $post = get_post( $post ) )
+		return $post->post_type;
+	return false;
+}
+/**
+* Retrieve a post type object by name
+*
+* @package WordPress
+* @subpackage Post
+* @since 3.0.0
+* @uses $wp_post_types
+* @see register_post_type
+* @see get_post_types
+*
+* @param string $post_type The name of a registered post type
+* @return object A post type object
+*/
+function get_post_type_object( $post_type ) {
+	global $wp_post_types;
+	if ( empty($wp_post_types[$post_type]) )
+		return null;
+	return $wp_post_types[$post_type];
+}
+/**
+* Get a list of all registered post type objects.
+*
+* @package WordPress
+* @subpackage Post
+* @since 2.9.0
+* @uses $wp_post_types
+* @see register_post_type
+*
+* @param array|string $args An array of key => value arguments to match against the post type objects.
+* @param string $output The type of output to return, either post type 'names' or 'objects'. 'names' is the default.
+* @param string $operator The logical operation to perform. 'or' means only one element
+*  from the array needs to match; 'and' means all elements must match. The default is 'and'.
+* @return array A list of post type names or objects
+*/
+function get_post_types( $args = array(), $output = 'names', $operator = 'and' ) {
+	global $wp_post_types;
+	$field = ('names' == $output) ? 'name' : false;
+	return wp_filter_object_list($wp_post_types, $args, $operator, $field);
+}
+/**
+* Register a post type. Do not use before init.
+*
+* A function for creating or modifying a post type based on the
+* parameters given. The function will accept an array (second optional
+* parameter), along with a string for the post type name.
+*
+* Optional $args contents:
+*
+* - label - Name of the post type shown in the menu. Usually plural. If not set, labels['name'] will be used.
+* - labels - An array of labels for this post type.
+*     * If not set, post labels are inherited for non-hierarchical types and page labels for hierarchical ones.
+*     * You can see accepted values in {@link get_post_type_labels()}.
+* - description - A short descriptive summary of what the post type is. Defaults to blank.
+* - public - Whether a post type is intended for use publicly either via the admin interface or by front-end users.
+*     * Defaults to false.
+*     * While the default settings of exclude_from_search, publicly_queryable, show_ui, and show_in_nav_menus are
+*       inherited from public, each does not rely on this relationship and controls a very specific intention.
+* - hierarchical - Whether the post type is hierarchical (e.g. page). Defaults to false.
+* - exclude_from_search - Whether to exclude posts with this post type from front end search results.
+*     * If not set, the opposite of public's current value is used.
+* - publicly_queryable - Whether queries can be performed on the front end for the post type as part of parse_request().
+*     * ?post_type={post_type_key}
+*     * ?{post_type_key}={single_post_slug}
+*     * ?{post_type_query_var}={single_post_slug}
+*     * If not set, the default is inherited from public.
+* - show_ui - Whether to generate a default UI for managing this post type in the admin.
+*     * If not set, the default is inherited from public.
+* - show_in_menu - Where to show the post type in the admin menu.
+*     * If true, the post type is shown in its own top level menu.
+*     * If false, no menu is shown
+*     * If a string of an existing top level menu (eg. 'tools.php' or 'edit.php?post_type=page'), the post type will
+*       be placed as a sub menu of that.
+*     * show_ui must be true.
+*     * If not set, the default is inherited from show_ui
+* - show_in_nav_menus - Makes this post type available for selection in navigation menus.
+*     * If not set, the default is inherited from public.
+* - show_in_admin_bar - Makes this post type available via the admin bar.
+*     * If not set, the default is inherited from show_in_menu
+* - menu_position - The position in the menu order the post type should appear.
+*     * show_in_menu must be true
+*     * Defaults to null, which places it at the bottom of its area.
+* - menu_icon - The url to the icon to be used for this menu. Defaults to use the posts icon.
+* - capability_type - The string to use to build the read, edit, and delete capabilities. Defaults to 'post'.
+*     * May be passed as an array to allow for alternative plurals when using this argument as a base to construct the
+*       capabilities, e.g. array('story', 'stories').
+* - capabilities - Array of capabilities for this post type.
+*     * By default the capability_type is used as a base to construct capabilities.
+*     * You can see accepted values in {@link get_post_type_capabilities()}.
+* - map_meta_cap - Whether to use the internal default meta capability handling. Defaults to false.
+* - supports - An alias for calling add_post_type_support() directly. Defaults to title and editor.
+*     * See {@link add_post_type_support()} for documentation.
+* - register_meta_box_cb - Provide a callback function that sets up the meta boxes
+*     for the edit form. Do remove_meta_box() and add_meta_box() calls in the callback.
+* - taxonomies - An array of taxonomy identifiers that will be registered for the post type.
+*     * Default is no taxonomies.
+*     * Taxonomies can be registered later with register_taxonomy() or register_taxonomy_for_object_type().
+* - has_archive - True to enable post type archives. Default is false.
+*     * Will generate the proper rewrite rules if rewrite is enabled.
+* - rewrite - Triggers the handling of rewrites for this post type. Defaults to true, using $post_type as slug.
+*     * To prevent rewrite, set to false.
+*     * To specify rewrite rules, an array can be passed with any of these keys
+*         * 'slug' => string Customize the permastruct slug. Defaults to $post_type key
+*         * 'with_front' => bool Should the permastruct be prepended with WP_Rewrite::$front. Defaults to true.
+*         * 'feeds' => bool Should a feed permastruct be built for this post type. Inherits default from has_archive.
+*         * 'pages' => bool Should the permastruct provide for pagination. Defaults to true.
+*         * 'ep_mask' => const Assign an endpoint mask.
+*             * If not specified and permalink_epmask is set, inherits from permalink_epmask.
+*             * If not specified and permalink_epmask is not set, defaults to EP_PERMALINK
+* - query_var - Sets the query_var key for this post type. Defaults to $post_type key
+*     * If false, a post type cannot be loaded at ?{query_var}={post_slug}
+*     * If specified as a string, the query ?{query_var_string}={post_slug} will be valid.
+* - can_export - Allows this post type to be exported. Defaults to true.
+* - delete_with_user - Whether to delete posts of this type when deleting a user.
+*     * If true, posts of this type belonging to the user will be moved to trash when then user is deleted.
+*     * If false, posts of this type belonging to the user will *not* be trashed or deleted.
+*     * If not set (the default), posts are trashed if post_type_supports('author'). Otherwise posts are not trashed or deleted.
+* - _builtin - true if this post type is a native or "built-in" post_type. THIS IS FOR INTERNAL USE ONLY!
+* - _edit_link - URL segement to use for edit link of this post type. THIS IS FOR INTERNAL USE ONLY!
+*
+* @since 2.9.0
+* @uses $wp_post_types Inserts new post type object into the list
+* @uses $wp_rewrite Gets default feeds
+* @uses $wp Adds query vars
+*
+* @param string $post_type Post type key, must not exceed 20 characters.
+* @param array|string $args See optional args description above.
+* @return object|WP_Error the registered post type object, or an error object.
+*/
+function register_post_type( $post_type, $args = array() ) {
+	global $wp_post_types, $wp_rewrite, $wp;
+	if ( ! is_array( $wp_post_types ) )
+		$wp_post_types = array();
+	// Args prefixed with an underscore are reserved for internal use.
+	$defaults = array(
+		'labels'               => array(),
+		'description'          => '',
+		'public'               => false,
+		'hierarchical'         => false,
+		'exclude_from_search'  => null,
+		'publicly_queryable'   => null,
+		'show_ui'              => null,
+		'show_in_menu'         => null,
+		'show_in_nav_menus'    => null,
+		'show_in_admin_bar'    => null,
+		'menu_position'        => null,
+		'menu_icon'            => null,
+		'capability_type'      => 'post',
+		'capabilities'         => array(),
+		'map_meta_cap'         => null,
+		'supports'             => array(),
+		'register_meta_box_cb' => null,
+		'taxonomies'           => array(),
+		'has_archive'          => false,
+		'rewrite'              => true,
+		'query_var'            => true,
+		'can_export'           => true,
+		'delete_with_user'     => null,
+		'_builtin'             => false,
+		'_edit_link'           => 'post.php?post=%d',
+	);
+	$args = wp_parse_args( $args, $defaults );
+	$args = (object) $args;
+	$post_type = sanitize_key( $post_type );
+	$args->name = $post_type;
+	if ( strlen( $post_type ) > 20 )
+		return new WP_Error( 'post_type_too_long', __( 'Post types cannot exceed 20 characters in length' ) );
+	// If not set, default to the setting for public.
+	if ( null === $args->publicly_queryable )
+		$args->publicly_queryable = $args->public;
+	// If not set, default to the setting for public.
+	if ( null === $args->show_ui )
+		$args->show_ui = $args->public;
+	// If not set, default to the setting for show_ui.
+	if ( null === $args->show_in_menu || ! $args->show_ui )
+		$args->show_in_menu = $args->show_ui;
+	// If not set, default to the whether the full UI is shown.
+	if ( null === $args->show_in_admin_bar )
+		$args->show_in_admin_bar = true === $args->show_in_menu;
+	// If not set, default to the setting for public.
+	if ( null === $args->show_in_nav_menus )
+		$args->show_in_nav_menus = $args->public;
+	// If not set, default to true if not public, false if public.
+	if ( null === $args->exclude_from_search )
+		$args->exclude_from_search = !$args->public;
+	// Back compat with quirky handling in version 3.0. #14122
+	if ( empty( $args->capabilities ) && null === $args->map_meta_cap && in_array( $args->capability_type, array( 'post', 'page' ) ) )
+		$args->map_meta_cap = true;
+	// If not set, default to false.
+	if ( null === $args->map_meta_cap )
+		$args->map_meta_cap = false;
+	$args->cap = get_post_type_capabilities( $args );
+	unset( $args->capabilities );
+	if ( is_array( $args->capability_type ) )
+		$args->capability_type = $args->capability_type[0];
+	if ( ! empty( $args->supports ) ) {
+		add_post_type_support( $post_type, $args->supports );
+		unset( $args->supports );
+	} elseif ( false !== $args->supports ) {
+		// Add default features
+		add_post_type_support( $post_type, array( 'title', 'editor' ) );
+	}
+	if ( false !== $args->query_var && ! empty( $wp ) ) {
+		if ( true === $args->query_var )
+			$args->query_var = $post_type;
+		else
+			$args->query_var = sanitize_title_with_dashes( $args->query_var );
+		$wp->add_query_var( $args->query_var );
+	}
+	if ( false !== $args->rewrite && ( is_admin() || '' != get_option( 'permalink_structure' ) ) ) {
+		if ( ! is_array( $args->rewrite ) )
+			$args->rewrite = array();
+		if ( empty( $args->rewrite['slug'] ) )
+			$args->rewrite['slug'] = $post_type;
+		if ( ! isset( $args->rewrite['with_front'] ) )
+			$args->rewrite['with_front'] = true;
+		if ( ! isset( $args->rewrite['pages'] ) )
+			$args->rewrite['pages'] = true;
+		if ( ! isset( $args->rewrite['feeds'] ) || ! $args->has_archive )
+			$args->rewrite['feeds'] = (bool) $args->has_archive;
+		if ( ! isset( $args->rewrite['ep_mask'] ) ) {
+			if ( isset( $args->permalink_epmask ) )
+				$args->rewrite['ep_mask'] = $args->permalink_epmask;
+			else
+				$args->rewrite['ep_mask'] = EP_PERMALINK;
+		}
+		if ( $args->hierarchical )
+			add_rewrite_tag( "%$post_type%", '(.+?)', $args->query_var ? "{$args->query_var}=" : "post_type=$post_type&pagename=" );
+		else
+			add_rewrite_tag( "%$post_type%", '([^/]+)', $args->query_var ? "{$args->query_var}=" : "post_type=$post_type&name=" );
+		if ( $args->has_archive ) {
+			$archive_slug = $args->has_archive === true ? $args->rewrite['slug'] : $args->has_archive;
+			if ( $args->rewrite['with_front'] )
+				$archive_slug = substr( $wp_rewrite->front, 1 ) . $archive_slug;
+			else
+				$archive_slug = $wp_rewrite->root . $archive_slug;
+			add_rewrite_rule( "{$archive_slug}/?$", "index.php?post_type=$post_type", 'top' );
+			if ( $args->rewrite['feeds'] && $wp_rewrite->feeds ) {
+				$feeds = '(' . trim( implode( '|', $wp_rewrite->feeds ) ) . ')';
+				add_rewrite_rule( "{$archive_slug}/feed/$feeds/?$", "index.php?post_type=$post_type" . '&feed=$matches[1]', 'top' );
+				add_rewrite_rule( "{$archive_slug}/$feeds/?$", "index.php?post_type=$post_type" . '&feed=$matches[1]', 'top' );
+			}
+			if ( $args->rewrite['pages'] )
+				add_rewrite_rule( "{$archive_slug}/{$wp_rewrite->pagination_base}/([0-9]{1,})/?$", "index.php?post_type=$post_type" . '&paged=$matches[1]', 'top' );
+		}
+		$permastruct_args = $args->rewrite;
+		$permastruct_args['feed'] = $permastruct_args['feeds'];
+		add_permastruct( $post_type, "{$args->rewrite['slug']}/%$post_type%", $permastruct_args );
+	}
+	if ( $args->register_meta_box_cb )
+		add_action( 'add_meta_boxes_' . $post_type, $args->register_meta_box_cb, 10, 1 );
+	$args->labels = get_post_type_labels( $args );
+	$args->label = $args->labels->name;
+	$wp_post_types[ $post_type ] = $args;
+	add_action( 'future_' . $post_type, '_future_post_hook', 5, 2 );
+	foreach ( $args->taxonomies as $taxonomy ) {
+		register_taxonomy_for_object_type( $taxonomy, $post_type );
+	}
+	do_action( 'registered_post_type', $post_type, $args );
+	return $args;
+}
+/**
+* Builds an object with all post type capabilities out of a post type object
+*
+* Post type capabilities use the 'capability_type' argument as a base, if the
+* capability is not set in the 'capabilities' argument array or if the
+* 'capabilities' argument is not supplied.
+*
+* The capability_type argument can optionally be registered as an array, with
+* the first value being singular and the second plural, e.g. array('story, 'stories')
+* Otherwise, an 's' will be added to the value for the plural form. After
+* registration, capability_type will always be a string of the singular value.
+*
+* By default, seven keys are accepted as part of the capabilities array:
+*
+* - edit_post, read_post, and delete_post are meta capabilities, which are then
+*   generally mapped to corresponding primitive capabilities depending on the
+*   context, which would be the post being edited/read/deleted and the user or
+*   role being checked. Thus these capabilities would generally not be granted
+*   directly to users or roles.
+*
+* - edit_posts - Controls whether objects of this post type can be edited.
+* - edit_others_posts - Controls whether objects of this type owned by other users
+*   can be edited. If the post type does not support an author, then this will
+*   behave like edit_posts.
+* - publish_posts - Controls publishing objects of this post type.
+* - read_private_posts - Controls whether private objects can be read.
+*
+* These four primitive capabilities are checked in core in various locations.
+* There are also seven other primitive capabilities which are not referenced
+* directly in core, except in map_meta_cap(), which takes the three aforementioned
+* meta capabilities and translates them into one or more primitive capabilities
+* that must then be checked against the user or role, depending on the context.
+*
+* - read - Controls whether objects of this post type can be read.
+* - delete_posts - Controls whether objects of this post type can be deleted.
+* - delete_private_posts - Controls whether private objects can be deleted.
+* - delete_published_posts - Controls whether published objects can be deleted.
+* - delete_others_posts - Controls whether objects owned by other users can be
+*   can be deleted. If the post type does not support an author, then this will
+*   behave like delete_posts.
+* - edit_private_posts - Controls whether private objects can be edited.
+* - edit_published_posts - Controls whether published objects can be edited.
+*
+* These additional capabilities are only used in map_meta_cap(). Thus, they are
+* only assigned by default if the post type is registered with the 'map_meta_cap'
+* argument set to true (default is false).
+*
+* @see map_meta_cap()
+* @since 3.0.0
+*
+* @param object $args Post type registration arguments
+* @return object object with all the capabilities as member variables
+*/
+function get_post_type_capabilities( $args ) {
+	if ( ! is_array( $args->capability_type ) )
+		$args->capability_type = array( $args->capability_type, $args->capability_type . 's' );
+	// Singular base for meta capabilities, plural base for primitive capabilities.
+	list( $singular_base, $plural_base ) = $args->capability_type;
+	$default_capabilities = array(
+		// Meta capabilities
+		'edit_post'          => 'edit_'         . $singular_base,
+		'read_post'          => 'read_'         . $singular_base,
+		'delete_post'        => 'delete_'       . $singular_base,
+		// Primitive capabilities used outside of map_meta_cap():
+		'edit_posts'         => 'edit_'         . $plural_base,
+		'edit_others_posts'  => 'edit_others_'  . $plural_base,
+		'publish_posts'      => 'publish_'      . $plural_base,
+		'read_private_posts' => 'read_private_' . $plural_base,
+	);
+	// Primitive capabilities used within map_meta_cap():
+	if ( $args->map_meta_cap ) {
+		$default_capabilities_for_mapping = array(
+			'read'                   => 'read',
+			'delete_posts'           => 'delete_'           . $plural_base,
+			'delete_private_posts'   => 'delete_private_'   . $plural_base,
+			'delete_published_posts' => 'delete_published_' . $plural_base,
+			'delete_others_posts'    => 'delete_others_'    . $plural_base,
+			'edit_private_posts'     => 'edit_private_'     . $plural_base,
+			'edit_published_posts'   => 'edit_published_'   . $plural_base,
+		);
+		$default_capabilities = array_merge( $default_capabilities, $default_capabilities_for_mapping );
+	}
+	$capabilities = array_merge( $default_capabilities, $args->capabilities );
+	// Post creation capability simply maps to edit_posts by default:
+	if ( ! isset( $capabilities['create_posts'] ) )
+		$capabilities['create_posts'] = $capabilities['edit_posts'];
+	// Remember meta capabilities for future reference.
+	if ( $args->map_meta_cap )
+		_post_type_meta_capabilities( $capabilities );
+	return (object) $capabilities;
+}
+/**
+* Stores or returns a list of post type meta caps for map_meta_cap().
+*
+* @since 3.1.0
+* @access private
+*/
+function _post_type_meta_capabilities( $capabilities = null ) {
+	static $meta_caps = array();
+	if ( null === $capabilities )
+		return $meta_caps;
+	foreach ( $capabilities as $core => $custom ) {
+		if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ) ) )
+			$meta_caps[ $custom ] = $core;
+	}
+}
+/**
+* Builds an object with all post type labels out of a post type object
+*
+* Accepted keys of the label array in the post type object:
+* - name - general name for the post type, usually plural. The same and overridden by $post_type_object->label. Default is Posts/Pages
+* - singular_name - name for one object of this post type. Default is Post/Page
+* - 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>
+* - add_new_item - Default is Add New Post/Add New Page
+* - edit_item - Default is Edit Post/Edit Page
+* - new_item - Default is New Post/New Page
+* - view_item - Default is View Post/View Page
+* - search_items - Default is Search Posts/Search Pages
+* - not_found - Default is No posts found/No pages found
+* - not_found_in_trash - Default is No posts found in Trash/No pages found in Trash
+* - parent_item_colon - This string isn't used on non-hierarchical types. In hierarchical ones the default is Parent Page:
+* - all_items - String for the submenu. Default is All Posts/All Pages
+* - menu_name - Default is the same as <code>name</code>
+*
+* Above, the first default value is for non-hierarchical post types (like posts) and the second one is for hierarchical post types (like pages).
+*
+* @since 3.0.0
+* @access private
+*
+* @param object $post_type_object
+* @return object object with all the labels as member variables
+*/
+function get_post_type_labels( $post_type_object ) {
+	$nohier_vs_hier_defaults = array(
+		'name' => array( _x('Posts', 'post type general name'), _x('Pages', 'post type general name') ),
+		'singular_name' => array( _x('Post', 'post type singular name'), _x('Page', 'post type singular name') ),
+		'add_new' => array( _x('Add New', 'post'), _x('Add New', 'page') ),
+		'add_new_item' => array( __('Add New Post'), __('Add New Page') ),
+		'edit_item' => array( __('Edit Post'), __('Edit Page') ),
+		'new_item' => array( __('New Post'), __('New Page') ),
+		'view_item' => array( __('View Post'), __('View Page') ),
+		'search_items' => array( __('Search Posts'), __('Search Pages') ),
+		'not_found' => array( __('No posts found.'), __('No pages found.') ),
+		'not_found_in_trash' => array( __('No posts found in Trash.'), __('No pages found in Trash.') ),
+		'parent_item_colon' => array( null, __('Parent Page:') ),
+		'all_items' => array( __( 'All Posts' ), __( 'All Pages' ) )
+	);
+	$nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
+	$labels = _get_custom_object_labels( $post_type_object, $nohier_vs_hier_defaults );
+	$post_type = $post_type_object->name;
+	return apply_filters( "post_type_labels_{$post_type}", $labels );
+}
+/**
+* Builds an object with custom-something object (post type, taxonomy) labels out of a custom-something object
+*
+* @access private
+* @since 3.0.0
+*/
+function _get_custom_object_labels( $object, $nohier_vs_hier_defaults ) {
+	$object->labels = (array) $object->labels;
+	if ( isset( $object->label ) && empty( $object->labels['name'] ) )
+		$object->labels['name'] = $object->label;
+	if ( !isset( $object->labels['singular_name'] ) && isset( $object->labels['name'] ) )
+		$object->labels['singular_name'] = $object->labels['name'];
+	if ( ! isset( $object->labels['name_admin_bar'] ) )
+		$object->labels['name_admin_bar'] = isset( $object->labels['singular_name'] ) ? $object->labels['singular_name'] : $object->name;
+	if ( !isset( $object->labels['menu_name'] ) && isset( $object->labels['name'] ) )
+		$object->labels['menu_name'] = $object->labels['name'];
+	if ( !isset( $object->labels['all_items'] ) && isset( $object->labels['menu_name'] ) )
+		$object->labels['all_items'] = $object->labels['menu_name'];
+	foreach ( $nohier_vs_hier_defaults as $key => $value )
+			$defaults[$key] = $object->hierarchical ? $value[1] : $value[0];
+	$labels = array_merge( $defaults, $object->labels );
+	return (object)$labels;
+}
+/**
+* Adds submenus for post types.
+*
+* @access private
+* @since 3.1.0
+*/
+function _add_post_type_submenus() {
+	foreach ( get_post_types( array( 'show_ui' => true ) ) as $ptype ) {
+		$ptype_obj = get_post_type_object( $ptype );
+		// Submenus only.
+		if ( ! $ptype_obj->show_in_menu || $ptype_obj->show_in_menu === true )
+			continue;
+		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" );
+	}
+}
+add_action( 'admin_menu', '_add_post_type_submenus' );
+/**
+* Register support of certain features for a post type.
+*
+* All features are directly associated with a functional area of the edit screen, such as the
+* editor or a meta box: 'title', 'editor', 'comments', 'revisions', 'trackbacks', 'author',
+* 'excerpt', 'page-attributes', 'thumbnail', and 'custom-fields'.
+*
+* Additionally, the 'revisions' feature dictates whether the post type will store revisions,
+* and the 'comments' feature dictates whether the comments count will show on the edit screen.
+*
+* @since 3.0.0
+* @param string $post_type The post type for which to add the feature
+* @param string|array $feature the feature being added, can be an array of feature strings or a single string
+*/
+function add_post_type_support( $post_type, $feature ) {
+	global $_wp_post_type_features;
+	$features = (array) $feature;
+	foreach ($features as $feature) {
+		if ( func_num_args() == 2 )
+			$_wp_post_type_features[$post_type][$feature] = true;
+		else
+			$_wp_post_type_features[$post_type][$feature] = array_slice( func_get_args(), 2 );
+	}
+}
+/**
+* Remove support for a feature from a post type.
+*
+* @since 3.0.0
+* @param string $post_type The post type for which to remove the feature
+* @param string $feature The feature being removed
+*/
+function remove_post_type_support( $post_type, $feature ) {
+	global $_wp_post_type_features;
+	if ( isset( $_wp_post_type_features[$post_type][$feature] ) )
+		unset( $_wp_post_type_features[$post_type][$feature] );
+}
+/**
+* Get all the post type features
+*
+* @since 3.4.0
+* @param string $post_type The post type
+* @return array
+*/
+function get_all_post_type_supports( $post_type ) {
+	global $_wp_post_type_features;
+	if ( isset( $_wp_post_type_features[$post_type] ) )
+		return $_wp_post_type_features[$post_type];
+	return array();
+}
+/**
+* Checks a post type's support for a given feature
+*
+* @since 3.0.0
+* @param string $post_type The post type being checked
+* @param string $feature the feature being checked
+* @return boolean
+*/
+function post_type_supports( $post_type, $feature ) {
+	global $_wp_post_type_features;
+	return ( isset( $_wp_post_type_features[$post_type][$feature] ) );
+}
+/**
+* Updates the post type for the post ID.
+*
+* The page or post cache will be cleaned for the post ID.
+*
+* @since 2.5.0
+*
+* @uses $wpdb
+*
+* @param int $post_id Post ID to change post type. Not actually optional.
+* @param string $post_type Optional, default is post. Supported values are 'post' or 'page' to
+*  name a few.
+* @return int Amount of rows changed. Should be 1 for success and 0 for failure.
+*/
+function set_post_type( $post_id = 0, $post_type = 'post' ) {
+	global $wpdb;
+	$post_type = sanitize_post_field('post_type', $post_type, $post_id, 'db');
+	$return = $wpdb->update( $wpdb->posts, array('post_type' => $post_type), array('ID' => $post_id) );
+	clean_post_cache( $post_id );
+	return $return;
+}
+/**
+* Retrieve list of latest posts or posts matching criteria.
+*
+* The defaults are as follows:
+*     'numberposts' - Default is 5. Total number of posts to retrieve.
+*     'offset' - Default is 0. See {@link WP_Query::query()} for more.
+*     'category' - What category to pull the posts from.
+*     'orderby' - Default is 'post_date'. How to order the posts.
+*     'order' - Default is 'DESC'. The order to retrieve the posts.
+*     'include' - See {@link WP_Query::query()} for more.
+*     'exclude' - See {@link WP_Query::query()} for more.
+*     'meta_key' - See {@link WP_Query::query()} for more.
+*     'meta_value' - See {@link WP_Query::query()} for more.
+*     'post_type' - Default is 'post'. Can be 'page', or 'attachment' to name a few.
+*     'post_parent' - The parent of the post or post type.
+*     'post_status' - Default is 'publish'. Post status to retrieve.
+*
+* @since 1.2.0
+* @uses WP_Query::query() See for more default arguments and information.
+* @link http://codex.wordpress.org/Template_Tags/get_posts
+*
+* @param array $args Optional. Overrides defaults.
+* @return array List of posts.
+*/
+function get_posts($args = null) {
+	$defaults = array(
+		'numberposts' => 5, 'offset' => 0,
+		'category' => 0, 'orderby' => 'post_date',
+		'order' => 'DESC', 'include' => array(),
+		'exclude' => array(), 'meta_key' => '',
+		'meta_value' =>'', 'post_type' => 'post',
+		'suppress_filters' => true
+	);
+	$r = wp_parse_args( $args, $defaults );
+	if ( empty( $r['post_status'] ) )
+		$r['post_status'] = ( 'attachment' == $r['post_type'] ) ? 'inherit' : 'publish';
+	if ( ! empty($r['numberposts']) && empty($r['posts_per_page']) )
+		$r['posts_per_page'] = $r['numberposts'];
+	if ( ! empty($r['category']) )
+		$r['cat'] = $r['category'];
+	if ( ! empty($r['include']) ) {
+		$incposts = wp_parse_id_list( $r['include'] );
+		$r['posts_per_page'] = count($incposts);  // only the number of posts included
+		$r['post__in'] = $incposts;
+	} elseif ( ! empty($r['exclude']) )
+		$r['post__not_in'] = wp_parse_id_list( $r['exclude'] );
+	$r['ignore_sticky_posts'] = true;
+	$r['no_found_rows'] = true;
+	$get_posts = new WP_Query;
+	return $get_posts->query($r);
+}
+//
+// Post meta functions
+//
+/**
+* Add meta data field to a post.
+*
+* Post meta data is called "Custom Fields" on the Administration Screen.
+*
+* @since 1.5.0
+* @link http://codex.wordpress.org/Function_Reference/add_post_meta
+*
+* @param int $post_id Post ID.
+* @param string $meta_key Metadata name.
+* @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
+* @param bool $unique Optional, default is false. Whether the same key should not be added.
+* @return int|bool Meta ID on success, false on failure.
+*/
+function add_post_meta($post_id, $meta_key, $meta_value, $unique = false) {
+	// make sure meta is added to the post, not a revision
+	if ( $the_post = wp_is_post_revision($post_id) )
+		$post_id = $the_post;
+	return add_metadata('post', $post_id, $meta_key, $meta_value, $unique);
+}
+/**
+* Remove metadata matching criteria from a post.
+*
+* You can match based on the key, or key and value. Removing based on key and
+* value, will keep from removing duplicate metadata with the same key. It also
+* allows removing all metadata matching key, if needed.
+*
+* @since 1.5.0
+* @link http://codex.wordpress.org/Function_Reference/delete_post_meta
+*
+* @param int $post_id post ID
+* @param string $meta_key Metadata name.
+* @param mixed $meta_value Optional. Metadata value. Must be serializable if non-scalar.
+* @return bool True on success, false on failure.
+*/
+function delete_post_meta($post_id, $meta_key, $meta_value = '') {
+	// make sure meta is added to the post, not a revision
+	if ( $the_post = wp_is_post_revision($post_id) )
+		$post_id = $the_post;
+	return delete_metadata('post', $post_id, $meta_key, $meta_value);
+}
+/**
+* Retrieve post meta field for a post.
+*
+* @since 1.5.0
+* @link http://codex.wordpress.org/Function_Reference/get_post_meta
+*
+* @param int $post_id Post ID.
+* @param string $key Optional. The meta key to retrieve. By default, returns data for all keys.
+* @param bool $single Whether to return a single value.
+* @return mixed Will be an array if $single is false. Will be value of meta data field if $single
+*  is true.
+*/
+function get_post_meta($post_id, $key = '', $single = false) {
+	return get_metadata('post', $post_id, $key, $single);
+}
+/**
+* Update post meta field based on post ID.
+*
+* Use the $prev_value parameter to differentiate between meta fields with the
+* same key and post ID.
+*
+* If the meta field for the post does not exist, it will be added.
+*
+* @since 1.5.0
+* @link http://codex.wordpress.org/Function_Reference/update_post_meta
+*
+* @param int $post_id Post ID.
+* @param string $meta_key Metadata key.
+* @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
+* @param mixed $prev_value Optional. Previous value to check before removing.
+* @return bool True on success, false on failure.
+*/
+function update_post_meta($post_id, $meta_key, $meta_value, $prev_value = '') {
+	// make sure meta is added to the post, not a revision
+	if ( $the_post = wp_is_post_revision($post_id) )
+		$post_id = $the_post;
+	return update_metadata('post', $post_id, $meta_key, $meta_value, $prev_value);
+}
+/**
+* Delete everything from post meta matching meta key.
+*
+* @since 2.3.0
+*
+* @param string $post_meta_key Key to search for when deleting.
+* @return bool Whether the post meta key was deleted from the database
+*/
+function delete_post_meta_by_key($post_meta_key) {
+	return delete_metadata( 'post', null, $post_meta_key, '', true );
+}
+/**
+* Retrieve post meta fields, based on post ID.
+*
+* The post meta fields are retrieved from the cache where possible,
+* so the function is optimized to be called more than once.
+*
+* @since 1.2.0
+* @link http://codex.wordpress.org/Function_Reference/get_post_custom
+*
+* @param int $post_id Post ID.
+* @return array
+*/
+function get_post_custom( $post_id = 0 ) {
+	$post_id = absint( $post_id );
+	if ( ! $post_id )
+		$post_id = get_the_ID();
+	return get_post_meta( $post_id );
+}
+/**
+* Retrieve meta field names for a post.
+*
+* If there are no meta fields, then nothing (null) will be returned.
+*
+* @since 1.2.0
+* @link http://codex.wordpress.org/Function_Reference/get_post_custom_keys
+*
+* @param int $post_id post ID
+* @return array|null Either array of the keys, or null if keys could not be retrieved.
+*/
+function get_post_custom_keys( $post_id = 0 ) {
+	$custom = get_post_custom( $post_id );
+	if ( !is_array($custom) )
+		return;
+	if ( $keys = array_keys($custom) )
+		return $keys;
+}
+/**
+* Retrieve values for a custom post field.
+*
+* The parameters must not be considered optional. All of the post meta fields
+* will be retrieved and only the meta field key values returned.
+*
+* @since 1.2.0
+* @link http://codex.wordpress.org/Function_Reference/get_post_custom_values
+*
+* @param string $key Meta field key.
+* @param int $post_id Post ID
+* @return array Meta field values.
+*/
+function get_post_custom_values( $key = '', $post_id = 0 ) {
+	if ( !$key )
+		return null;
+	$custom = get_post_custom($post_id);
+	return isset($custom[$key]) ? $custom[$key] : null;
+}
+/**
+* Check if post is sticky.
+*
+* Sticky posts should remain at the top of The Loop. If the post ID is not
+* given, then The Loop ID for the current post will be used.
+*
+* @since 2.7.0
+*
+* @param int $post_id Optional. Post ID.
+* @return bool Whether post is sticky.
+*/
+function is_sticky( $post_id = 0 ) {
+	$post_id = absint( $post_id );
+	if ( ! $post_id )
+		$post_id = get_the_ID();
+	$stickies = get_option( 'sticky_posts' );
+	if ( ! is_array( $stickies ) )
+		return false;
+	if ( in_array( $post_id, $stickies ) )
+		return true;
+	return false;
+}
+/**
+* Sanitize every post field.
+*
+* If the context is 'raw', then the post object or array will get minimal santization of the int fields.
+*
+* @since 2.3.0
+* @uses sanitize_post_field() Used to sanitize the fields.
+*
+* @param object|WP_Post|array $post The Post Object or Array
+* @param string $context Optional, default is 'display'. How to sanitize post fields.
+* @return object|WP_Post|array The now sanitized Post Object or Array (will be the same type as $post)
+*/
+function sanitize_post($post, $context = 'display') {
+	if ( is_object($post) ) {
+		// Check if post already filtered for this context
+		if ( isset($post->filter) && $context == $post->filter )
+			return $post;
+		if ( !isset($post->ID) )
+			$post->ID = 0;
+		foreach ( array_keys(get_object_vars($post)) as $field )
+			$post->$field = sanitize_post_field($field, $post->$field, $post->ID, $context);
+		$post->filter = $context;
+	} else {
+		// Check if post already filtered for this context
+		if ( isset($post['filter']) && $context == $post['filter'] )
+			return $post;
+		if ( !isset($post['ID']) )
+			$post['ID'] = 0;
+		foreach ( array_keys($post) as $field )
+			$post[$field] = sanitize_post_field($field, $post[$field], $post['ID'], $context);
+		$post['filter'] = $context;
+	}
+	return $post;
+}
+/**
+* Sanitize post field based on context.
+*
+* Possible context values are:  'raw', 'edit', 'db', 'display', 'attribute' and 'js'. The
+* 'display' context is used by default. 'attribute' and 'js' contexts are treated like 'display'
+* when calling filters.
+*
+* @since 2.3.0
+* @uses apply_filters() Calls 'edit_$field' and '{$field_no_prefix}_edit_pre' passing $value and
+*  $post_id if $context == 'edit' and field name prefix == 'post_'.
+*
+* @uses apply_filters() Calls 'edit_post_$field' passing $value and $post_id if $context == 'db'.
+* @uses apply_filters() Calls 'pre_$field' passing $value if $context == 'db' and field name prefix == 'post_'.
+* @uses apply_filters() Calls '{$field}_pre' passing $value if $context == 'db' and field name prefix != 'post_'.
+*
+* @uses apply_filters() Calls '$field' passing $value, $post_id and $context if $context == anything
+*  other than 'raw', 'edit' and 'db' and field name prefix == 'post_'.
+* @uses apply_filters() Calls 'post_$field' passing $value if $context == anything other than 'raw',
+*  'edit' and 'db' and field name prefix != 'post_'.
+*
+* @param string $field The Post Object field name.
+* @param mixed $value The Post Object value.
+* @param int $post_id Post ID.
+* @param string $context How to sanitize post fields. Looks for 'raw', 'edit', 'db', 'display',
+*               'attribute' and 'js'.
+* @return mixed Sanitized value.
+*/
+function sanitize_post_field($field, $value, $post_id, $context) {
+	$int_fields = array('ID', 'post_parent', 'menu_order');
+	if ( in_array($field, $int_fields) )
+		$value = (int) $value;
+	// Fields which contain arrays of ints.
+	$array_int_fields = array( 'ancestors' );
+	if ( in_array($field, $array_int_fields) ) {
+		$value = array_map( 'absint', $value);
+		return $value;
+	}
+	if ( 'raw' == $context )
+		return $value;
+	$prefixed = false;
+	if ( false !== strpos($field, 'post_') ) {
+		$prefixed = true;
+		$field_no_prefix = str_replace('post_', '', $field);
+	}
+	if ( 'edit' == $context ) {
+		$format_to_edit = array('post_content', 'post_excerpt', 'post_title', 'post_password');
+		if ( $prefixed ) {
+			$value = apply_filters("edit_{$field}", $value, $post_id);
+			// Old school
+			$value = apply_filters("{$field_no_prefix}_edit_pre", $value, $post_id);
+		} else {
+			$value = apply_filters("edit_post_{$field}", $value, $post_id);
+		}
+		if ( in_array($field, $format_to_edit) ) {
+			if ( 'post_content' == $field )
+				$value = format_to_edit($value, user_can_richedit());
+			else
+				$value = format_to_edit($value);
+		} else {
+			$value = esc_attr($value);
+		}
+	} else if ( 'db' == $context ) {
+		if ( $prefixed ) {
+			$value = apply_filters("pre_{$field}", $value);
+			$value = apply_filters("{$field_no_prefix}_save_pre", $value);
+		} else {
+			$value = apply_filters("pre_post_{$field}", $value);
+			$value = apply_filters("{$field}_pre", $value);
+		}
+	} else {
+		// Use display filters by default.
+		if ( $prefixed )
+			$value = apply_filters($field, $value, $post_id, $context);
+		else
+			$value = apply_filters("post_{$field}", $value, $post_id, $context);
+	}
+	if ( 'attribute' == $context )
+		$value = esc_attr($value);
+	else if ( 'js' == $context )
+		$value = esc_js($value);
+	return $value;
+}
+/**
+* Make a post sticky.
+*
+* Sticky posts should be displayed at the top of the front page.
+*
+* @since 2.7.0
+*
+* @param int $post_id Post ID.
+*/
+function stick_post($post_id) {
+	$stickies = get_option('sticky_posts');
+	if ( !is_array($stickies) )
+		$stickies = array($post_id);
+	if ( ! in_array($post_id, $stickies) )
+		$stickies[] = $post_id;
+	update_option('sticky_posts', $stickies);
+}
+/**
+* Unstick a post.
+*
+* Sticky posts should be displayed at the top of the front page.
+*
+* @since 2.7.0
+*
+* @param int $post_id Post ID.
+*/
+function unstick_post($post_id) {
+	$stickies = get_option('sticky_posts');
+	if ( !is_array($stickies) )
+		return;
+	if ( ! in_array($post_id, $stickies) )
+		return;
+	$offset = array_search($post_id, $stickies);
+	if ( false === $offset )
+		return;
+	array_splice($stickies, $offset, 1);
+	update_option('sticky_posts', $stickies);
+}
+/**
+* Count number of posts of a post type and if user has permissions to view.
+*
+* This function provides an efficient method of finding the amount of post's
+* type a blog has. Another method is to count the amount of items in
+* get_posts(), but that method has a lot of overhead with doing so. Therefore,
+* when developing for 2.5+, use this function instead.
+*
+* The $perm parameter checks for 'readable' value and if the user can read
+* private posts, it will display that for the user that is signed in.
+*
+* @link http://codex.wordpress.org/Template_Tags/wp_count_posts
+*
+* @since 2.5.0
+*
+* @param string $type Optional. Post type to retrieve count
+* @param string $perm Optional. 'readable' or empty.
+* @return object Number of posts for each status
+*/
+function wp_count_posts( $type = 'post', $perm = '' ) {
+	global $wpdb;
+	if ( ! post_type_exists( $type ) )
+		return new stdClass;
+	$user = wp_get_current_user();
+	$cache_key = 'posts-' . $type;
+	$query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s";
+	if ( 'readable' == $perm && is_user_logged_in() ) {
+		$post_type_object = get_post_type_object($type);
+		if ( !current_user_can( $post_type_object->cap->read_private_posts ) ) {
+			$cache_key .= '_' . $perm . '_' . $user->ID;
+			$query .= " AND (post_status != 'private' OR ( post_author = '$user->ID' AND post_status = 'private' ))";
+		}
+	}
+	$query .= ' GROUP BY post_status';
+	$counts = wp_cache_get( $cache_key, 'counts' );
+	if ( false === $counts ) {
+		$results = (array) $wpdb->get_results( $wpdb->prepare( $query, $type ), ARRAY_A );
+		$counts = array_fill_keys( get_post_stati(), 0 );
+		foreach ( $results as $row )
+			$counts[ $row['post_status'] ] = $row['num_posts'];
+		$counts = (object) $counts;
+		wp_cache_set( $cache_key, $counts, 'counts' );
+	}
+	/**
+	 * Modify returned post counts by status for the current post type.
+	 *
+	 * @since 3.7.0
+	 *
+	 * @param object $counts An object containing the current post_type's post counts by status.
+	 * @param string $type   The post type.
+	 * @param string $perm   The permission to determine if the posts are 'readable' by the current user.
+	 */
+	return apply_filters( 'wp_count_posts', $counts, $type, $perm );
+}
+/**
+* Count number of attachments for the mime type(s).
+*
+* If you set the optional mime_type parameter, then an array will still be
+* returned, but will only have the item you are looking for. It does not give
+* you the number of attachments that are children of a post. You can get that
+* by counting the number of children that post has.
+*
+* @since 2.5.0
+*
+* @param string|array $mime_type Optional. Array or comma-separated list of MIME patterns.
+* @return array Number of posts for each mime type.
+*/
+function wp_count_attachments( $mime_type = '' ) {
+	global $wpdb;
+	$and = wp_post_mime_type_where( $mime_type );
+	$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 );
+	$counts = array();
+	foreach( (array) $count as $row ) {
+		$counts[ $row['post_mime_type'] ] = $row['num_posts'];
+	}
+	$counts['trash'] = $wpdb->get_var( "SELECT COUNT( * ) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status = 'trash' $and");
+	/**
+	 * Modify returned attachment counts by mime type.
+	 *
+	 * @since 3.7.0
+	 *
+	 * @param object $counts    An object containing the attachment counts by mime type.
+	 * @param string $mime_type The mime type pattern used to filter the attachments counted.
+	 */
+	return apply_filters( 'wp_count_attachments', (object) $counts, $mime_type );
+}
+/**
+* Get default post mime types
+*
+* @since 2.9.0
+*
+* @return array
+*/
+function get_post_mime_types() {
+	$post_mime_types = array(	//	array( adj, noun )
+		'image' => array(__('Images'), __('Manage Images'), _n_noop('Image <span class="count">(%s)</span>', 'Images <span class="count">(%s)</span>')),
+		'audio' => array(__('Audio'), __('Manage Audio'), _n_noop('Audio <span class="count">(%s)</span>', 'Audio <span class="count">(%s)</span>')),
+		'video' => array(__('Video'), __('Manage Video'), _n_noop('Video <span class="count">(%s)</span>', 'Video <span class="count">(%s)</span>')),
+	);
+	return apply_filters('post_mime_types', $post_mime_types);
+}
+/**
+* Check a MIME-Type against a list.
+*
+* If the wildcard_mime_types parameter is a string, it must be comma separated
+* list. If the real_mime_types is a string, it is also comma separated to
+* create the list.
+*
+* @since 2.5.0
+*
+* @param string|array $wildcard_mime_types e.g. audio/mpeg or image (same as image/*) or
+*  flash (same as *flash*).
+* @param string|array $real_mime_types post_mime_type values
+* @return array array(wildcard=>array(real types))
+*/
+function wp_match_mime_types($wildcard_mime_types, $real_mime_types) {
+	$matches = array();
+	if ( is_string($wildcard_mime_types) )
+		$wildcard_mime_types = array_map('trim', explode(',', $wildcard_mime_types));
+	if ( is_string($real_mime_types) )
+		$real_mime_types = array_map('trim', explode(',', $real_mime_types));
+	$wild = '[-._a-z0-9]*';
+	foreach ( (array) $wildcard_mime_types as $type ) {
+		$type = str_replace('*', $wild, $type);
+		$patternses[1][$type] = "^$type$";
+		if ( false === strpos($type, '/') ) {
+			$patternses[2][$type] = "^$type/";
+			$patternses[3][$type] = $type;
+		}
+	}
+	asort($patternses);
+	foreach ( $patternses as $patterns )
+		foreach ( $patterns as $type => $pattern )
+			foreach ( (array) $real_mime_types as $real )
+				if ( preg_match("#$pattern#", $real) && ( empty($matches[$type]) || false === array_search($real, $matches[$type]) ) )
+					$matches[$type][] = $real;
+	return $matches;
+}
+/**
+* Convert MIME types into SQL.
+*
+* @since 2.5.0
+*
+* @param string|array $post_mime_types List of mime types or comma separated string of mime types.
+* @param string $table_alias Optional. Specify a table alias, if needed.
+* @return string The SQL AND clause for mime searching.
+*/
+function wp_post_mime_type_where($post_mime_types, $table_alias = '') {
+	$where = '';
+	$wildcards = array('', '%', '%/%');
+	if ( is_string($post_mime_types) )
+		$post_mime_types = array_map('trim', explode(',', $post_mime_types));
+	foreach ( (array) $post_mime_types as $mime_type ) {
+		$mime_type = preg_replace('/\s/', '', $mime_type);
+		$slashpos = strpos($mime_type, '/');
+		if ( false !== $slashpos ) {
+			$mime_group = preg_replace('/[^-*.a-zA-Z0-9]/', '', substr($mime_type, 0, $slashpos));
+			$mime_subgroup = preg_replace('/[^-*.+a-zA-Z0-9]/', '', substr($mime_type, $slashpos + 1));
+			if ( empty($mime_subgroup) )
+				$mime_subgroup = '*';
+			else
+				$mime_subgroup = str_replace('/', '', $mime_subgroup);
+			$mime_pattern = "$mime_group/$mime_subgroup";
+		} else {
+			$mime_pattern = preg_replace('/[^-*.a-zA-Z0-9]/', '', $mime_type);
+			if ( false === strpos($mime_pattern, '*') )
+				$mime_pattern .= '/*';
+		}
+		$mime_pattern = preg_replace('/\*+/', '%', $mime_pattern);
+		if ( in_array( $mime_type, $wildcards ) )
+			return '';
+		if ( false !== strpos($mime_pattern, '%') )
+			$wheres[] = empty($table_alias) ? "post_mime_type LIKE '$mime_pattern'" : "$table_alias.post_mime_type LIKE '$mime_pattern'";
+		else
+			$wheres[] = empty($table_alias) ? "post_mime_type = '$mime_pattern'" : "$table_alias.post_mime_type = '$mime_pattern'";
+	}
+	if ( !empty($wheres) )
+		$where = ' AND (' . join(' OR ', $wheres) . ') ';
+	return $where;
+}
+/**
+* Trashes or deletes a post or page.
+*
+* When the post and page is permanently deleted, everything that is tied to it is deleted also.
+* This includes comments, post meta fields, and terms associated with the post.
+*
+* The post or page is moved to trash instead of permanently deleted unless trash is
+* disabled, item is already in the trash, or $force_delete is true.
+*
+* @since 1.0.0
+* @uses do_action() on 'delete_post' before deletion unless post type is 'attachment'.
+* @uses do_action() on 'deleted_post' after deletion unless post type is 'attachment'.
+* @uses wp_delete_attachment() if post type is 'attachment'.
+* @uses wp_trash_post() if item should be trashed.
+*
+* @param int $postid Post ID.
+* @param bool $force_delete Whether to bypass trash and force deletion. Defaults to false.
+* @return mixed False on failure
+*/
+function wp_delete_post( $postid = 0, $force_delete = false ) {
+	global $wpdb;
+	if ( !$post = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $postid)) )
+		return $post;
+	if ( !$force_delete && ( $post->post_type == 'post' || $post->post_type == 'page') && get_post_status( $postid ) != 'trash' && EMPTY_TRASH_DAYS )
+			return wp_trash_post($postid);
+	if ( $post->post_type == 'attachment' )
+		return wp_delete_attachment( $postid, $force_delete );
+	do_action('before_delete_post', $postid);
+	delete_post_meta($postid,'_wp_trash_meta_status');
+	delete_post_meta($postid,'_wp_trash_meta_time');
+	wp_delete_object_term_relationships($postid, get_object_taxonomies($post->post_type));
+	$parent_data = array( 'post_parent' => $post->post_parent );
+	$parent_where = array( 'post_parent' => $postid );
+	if ( is_post_type_hierarchical( $post->post_type ) ) {
+		// Point children of this page to its parent, also clean the cache of affected children
+		$children_query = $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_parent = %d AND post_type = %s", $postid, $post->post_type );
+		$children = $wpdb->get_results( $children_query );
+		$wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => $post->post_type ) );
+	}
+	// Do raw query. wp_get_post_revisions() is filtered
+	$revision_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'revision'", $postid ) );
+	// Use wp_delete_post (via wp_delete_post_revision) again. Ensures any meta/misplaced data gets cleaned up.
+	foreach ( $revision_ids as $revision_id )
+		wp_delete_post_revision( $revision_id );
+	// Point all attachments to this post up one level
+	$wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => 'attachment' ) );
+	$comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $postid ));
+	foreach ( $comment_ids as $comment_id )
+		wp_delete_comment( $comment_id, true );
+	$post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $postid ));
+	foreach ( $post_meta_ids as $mid )
+		delete_metadata_by_mid( 'post', $mid );
+	do_action( 'delete_post', $postid );
+	$wpdb->delete( $wpdb->posts, array( 'ID' => $postid ) );
+	do_action( 'deleted_post', $postid );
+	clean_post_cache( $post );
+	if ( is_post_type_hierarchical( $post->post_type ) && $children ) {
+		foreach ( $children as $child )
+			clean_post_cache( $child );
+	}
+	wp_clear_scheduled_hook('publish_future_post', array( $postid ) );
+	do_action('after_delete_post', $postid);
+	return $post;
+}
+/**
+* Resets the page_on_front, show_on_front, and page_for_post settings when a
+* linked page is deleted or trashed.
+*
+* Also ensures the post is no longer sticky.
+*
+* @access private
+* @since 3.7.0
+* @param $post_id
+*/
+function _reset_front_page_settings_for_post( $post_id ) {
+	$post = get_post( $post_id );
+	if ( 'page' == $post->post_type ) {
+	 	// If the page is defined in option page_on_front or post_for_posts,
+		// adjust the corresponding options
+		if ( get_option( 'page_on_front' ) == $post->ID ) {
+			update_option( 'show_on_front', 'posts' );
+			update_option( 'page_on_front', 0 );
+		}
+		if ( get_option( 'page_for_posts' ) == $post->ID ) {
+			delete_option( 'page_for_posts', 0 );
+		}
+	}
+	unstick_post( $post->ID );
+}
+add_action( 'before_delete_post', '_reset_front_page_settings_for_post' );
+add_action( 'wp_trash_post',      '_reset_front_page_settings_for_post' );
+/**
+* Moves a post or page to the Trash
+*
+* If trash is disabled, the post or page is permanently deleted.
+*
+* @since 2.9.0
+* @uses do_action() on 'trash_post' before trashing
+* @uses do_action() on 'trashed_post' after trashing
+* @uses wp_delete_post() if trash is disabled
+*
+* @param int $post_id Post ID.
+* @return mixed False on failure
+*/
+function wp_trash_post($post_id = 0) {
+	if ( !EMPTY_TRASH_DAYS )
+		return wp_delete_post($post_id, true);
+	if ( !$post = get_post($post_id, ARRAY_A) )
+		return $post;
+	if ( $post['post_status'] == 'trash' )
+		return false;
+	do_action('wp_trash_post', $post_id);
+	add_post_meta($post_id,'_wp_trash_meta_status', $post['post_status']);
+	add_post_meta($post_id,'_wp_trash_meta_time', time());
+	$post['post_status'] = 'trash';
+	wp_insert_post($post);
+	wp_trash_post_comments($post_id);
+	do_action('trashed_post', $post_id);
+	return $post;
+}
+/**
+* Restores a post or page from the Trash
+*
+* @since 2.9.0
+* @uses do_action() on 'untrash_post' before undeletion
+* @uses do_action() on 'untrashed_post' after undeletion
+*
+* @param int $post_id Post ID.
+* @return mixed False on failure
+*/
+function wp_untrash_post($post_id = 0) {
+	if ( !$post = get_post($post_id, ARRAY_A) )
+		return $post;
+	if ( $post['post_status'] != 'trash' )
+		return false;
+	do_action('untrash_post', $post_id);
+	$post_status = get_post_meta($post_id, '_wp_trash_meta_status', true);
+	$post['post_status'] = $post_status;
+	delete_post_meta($post_id, '_wp_trash_meta_status');
+	delete_post_meta($post_id, '_wp_trash_meta_time');
+	wp_insert_post($post);
+	wp_untrash_post_comments($post_id);
+	do_action('untrashed_post', $post_id);
+	return $post;
+}
+/**
+* Moves comments for a post to the trash
+*
+* @since 2.9.0
+* @uses do_action() on 'trash_post_comments' before trashing
+* @uses do_action() on 'trashed_post_comments' after trashing
+*
+* @param int|object $post Post ID or object.
+* @return mixed False on failure
+*/
+function wp_trash_post_comments($post = null) {
+	global $wpdb;
+	$post = get_post($post);
+	if ( empty($post) )
+		return;
+	$post_id = $post->ID;
+	do_action('trash_post_comments', $post_id);
+	$comments = $wpdb->get_results( $wpdb->prepare("SELECT comment_ID, comment_approved FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id) );
+	if ( empty($comments) )
+		return;
+	// Cache current status for each comment
+	$statuses = array();
+	foreach ( $comments as $comment )
+		$statuses[$comment->comment_ID] = $comment->comment_approved;
+	add_post_meta($post_id, '_wp_trash_meta_comments_status', $statuses);
+	// Set status for all comments to post-trashed
+	$result = $wpdb->update($wpdb->comments, array('comment_approved' => 'post-trashed'), array('comment_post_ID' => $post_id));
+	clean_comment_cache( array_keys($statuses) );
+	do_action('trashed_post_comments', $post_id, $statuses);
+	return $result;
+}
+/**
+* Restore comments for a post from the trash
+*
+* @since 2.9.0
+* @uses do_action() on 'untrash_post_comments' before trashing
+* @uses do_action() on 'untrashed_post_comments' after trashing
+*
+* @param int|object $post Post ID or object.
+* @return mixed False on failure
+*/
+function wp_untrash_post_comments($post = null) {
+	global $wpdb;
+	$post = get_post($post);
+	if ( empty($post) )
+		return;
+	$post_id = $post->ID;
+	$statuses = get_post_meta($post_id, '_wp_trash_meta_comments_status', true);
+	if ( empty($statuses) )
+		return true;
+	do_action('untrash_post_comments', $post_id);
+	// Restore each comment to its original status
+	$group_by_status = array();
+	foreach ( $statuses as $comment_id => $comment_status )
+		$group_by_status[$comment_status][] = $comment_id;
+	foreach ( $group_by_status as $status => $comments ) {
+		// Sanity check. This shouldn't happen.
+		if ( 'post-trashed' == $status )
+			$status = '0';
+		$comments_in = implode( "', '", $comments );
+		$wpdb->query( "UPDATE $wpdb->comments SET comment_approved = '$status' WHERE comment_ID IN ('" . $comments_in . "')" );
+	}
+	clean_comment_cache( array_keys($statuses) );
+	delete_post_meta($post_id, '_wp_trash_meta_comments_status');
+	do_action('untrashed_post_comments', $post_id);
+}
+/**
+* Retrieve the list of categories for a post.
+*
+* Compatibility layer for themes and plugins. Also an easy layer of abstraction
+* away from the complexity of the taxonomy layer.
+*
+* @since 2.1.0
+*
+* @uses wp_get_object_terms() Retrieves the categories. Args details can be found here.
+*
+* @param int $post_id Optional. The Post ID.
+* @param array $args Optional. Overwrite the defaults.
+* @return array
+*/
+function wp_get_post_categories( $post_id = 0, $args = array() ) {
+	$post_id = (int) $post_id;
+	$defaults = array('fields' => 'ids');
+	$args = wp_parse_args( $args, $defaults );
+	$cats = wp_get_object_terms($post_id, 'category', $args);
+	return $cats;
+}
+/**
+* Retrieve the tags for a post.
+*
+* There is only one default for this function, called 'fields' and by default
+* is set to 'all'. There are other defaults that can be overridden in
+* {@link wp_get_object_terms()}.
+*
+* @package WordPress
+* @subpackage Post
+* @since 2.3.0
+*
+* @uses wp_get_object_terms() Gets the tags for returning. Args can be found here
+*
+* @param int $post_id Optional. The Post ID
+* @param array $args Optional. Overwrite the defaults
+* @return array List of post tags.
+*/
+function wp_get_post_tags( $post_id = 0, $args = array() ) {
+	return wp_get_post_terms( $post_id, 'post_tag', $args);
+}
+/**
+* Retrieve the terms for a post.
+*
+* There is only one default for this function, called 'fields' and by default
+* is set to 'all'. There are other defaults that can be overridden in
+* {@link wp_get_object_terms()}.
+*
+* @package WordPress
+* @subpackage Post
+* @since 2.8.0
+*
+* @uses wp_get_object_terms() Gets the tags for returning. Args can be found here
+*
+* @param int $post_id Optional. The Post ID
+* @param string $taxonomy The taxonomy for which to retrieve terms. Defaults to post_tag.
+* @param array $args Optional. Overwrite the defaults
+* @return array List of post tags.
+*/
+function wp_get_post_terms( $post_id = 0, $taxonomy = 'post_tag', $args = array() ) {
+	$post_id = (int) $post_id;
+	$defaults = array('fields' => 'all');
+	$args = wp_parse_args( $args, $defaults );
+	$tags = wp_get_object_terms($post_id, $taxonomy, $args);
+	return $tags;
+}
+/**
+* Retrieve number of recent posts.
+*
+* @since 1.0.0
+* @uses wp_parse_args()
+* @uses get_posts()
+*
+* @param string $deprecated Deprecated.
+* @param array $args Optional. Overrides defaults.
+* @param string $output Optional.
+* @return unknown.
+*/
+function wp_get_recent_posts( $args = array(), $output = ARRAY_A ) {
+	if ( is_numeric( $args ) ) {
+		_deprecated_argument( __FUNCTION__, '3.1', __( 'Passing an integer number of posts is deprecated. Pass an array of arguments instead.' ) );
+		$args = array( 'numberposts' => absint( $args ) );
+	}
+	// Set default arguments
+	$defaults = array(
+		'numberposts' => 10, 'offset' => 0,
+		'category' => 0, 'orderby' => 'post_date',
+		'order' => 'DESC', 'include' => '',
+		'exclude' => '', 'meta_key' => '',
+		'meta_value' =>'', 'post_type' => 'post', 'post_status' => 'draft, publish, future, pending, private',
+		'suppress_filters' => true
+	);
+	$r = wp_parse_args( $args, $defaults );
+	$results = get_posts( $r );
+	// Backward compatibility. Prior to 3.1 expected posts to be returned in array
+	if ( ARRAY_A == $output ){
+		foreach( $results as $key => $result ) {
+			$results[$key] = get_object_vars( $result );
+		}
+		return $results ? $results : array();
+	}
+	return $results ? $results : false;
+}
+/**
+* Insert or update a post.
+*
+* If the $postarr parameter has 'ID' set to a value, then post will be updated.
+*
+* You can set the post date manually, by setting the values for 'post_date'
+* and 'post_date_gmt' keys. You can close the comments or open the comments by
+* setting the value for 'comment_status' key.
+*
+* @global wpdb $wpdb    WordPress database abstraction object.
+*
+* @since 1.0.0
+*
+* @param array $postarr {
+*     An array of elements that make up a post to update or insert.
+*
+*     @type int    'ID'                    The post ID. If equal to something other than 0, the post with that ID will
+*                                          be updated. Default 0.
+*     @type string 'post_status'           The post status. Default 'draft'.
+*     @type string 'post_type'             The post type. Default 'post'.
+*     @type int    'post_author'           The ID of the user who added the post. Default the current user ID.
+*     @type bool   'ping_status'           Whether the post can accept pings. Default value of 'default_ping_status' option.
+*     @type int    'post_parent'           Set this for the post it belongs to, if any. Default 0.
+*     @type int    'menu_order'            The order it is displayed. Default 0.
+*     @type string 'to_ping'               Space or carriage return-separated list of URLs to ping. Default empty string.
+*     @type string 'pinged'                Space or carriage return-separated list of URLs that have been pinged.
+*                                          Default empty string.
+*     @type string 'post_password          The password to access the post. Default empty string.
+*     @type string 'guid'                  Global Unique ID for referencing the post.
+*     @type string 'post_content_filtered' The filtered post content. Default empty string.
+*     @type string 'post_excerpt'          The post excerpt. Default empty string.
+* }
+* @param bool  $wp_error Optional. Allow return of WP_Error on failure.
+* @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
+*/
+function wp_insert_post( $postarr, $wp_error = false ) {
+	global $wpdb;
+	$user_id = get_current_user_id();
+	$defaults = array('post_status' => 'draft', 'post_type' => 'post', 'post_author' => $user_id,
+		'ping_status' => get_option('default_ping_status'), 'post_parent' => 0,
+		'menu_order' => 0, 'to_ping' =>  '', 'pinged' => '', 'post_password' => '',
+		'guid' => '', 'post_content_filtered' => '', 'post_excerpt' => '', 'import_id' => 0,
+		'post_content' => '', 'post_title' => '');
+	$postarr = wp_parse_args($postarr, $defaults);
+	unset( $postarr[ 'filter' ] );
+	$postarr = sanitize_post($postarr, 'db');
+	// export array as variables
+	extract($postarr, EXTR_SKIP);
+	// Are we updating or creating?
+	$post_ID = 0;
+	$update = false;
+	if ( ! empty( $ID ) ) {
+		$update = true;
+		// Get the post ID and GUID
+		$post_ID = $ID;
+		$post_before = get_post( $post_ID );
+		if ( is_null( $post_before ) ) {
+			if ( $wp_error )
+				return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
+			return 0;
+		}
+		$guid = get_post_field( 'guid', $post_ID );
+		$previous_status = get_post_field('post_status', $ID);
+	} else {
+		$previous_status = 'new';
+	}
+	$maybe_empty = ! $post_content && ! $post_title && ! $post_excerpt && post_type_supports( $post_type, 'editor' )
+		&& post_type_supports( $post_type, 'title' ) && post_type_supports( $post_type, 'excerpt' );
+	if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
+		if ( $wp_error )
+			return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
+		else
+			return 0;
+	}
+	if ( empty($post_type) )
+		$post_type = 'post';
+	if ( empty($post_status) )
+		$post_status = 'draft';
+	if ( !empty($post_category) )
+		$post_category = array_filter($post_category); // Filter out empty terms
+	// Make sure we set a valid category.
+	if ( empty($post_category) || 0 == count($post_category) || !is_array($post_category) ) {
+		// 'post' requires at least one category.
+		if ( 'post' == $post_type && 'auto-draft' != $post_status )
+			$post_category = array( get_option('default_category') );
+		else
+			$post_category = array();
+	}
+	if ( empty($post_author) )
+		$post_author = $user_id;
+	// Don't allow contributors to set the post slug for pending review posts
+	if ( 'pending' == $post_status && !current_user_can( 'publish_posts' ) )
+		$post_name = '';
+	// Create a valid post name. Drafts and pending posts are allowed to have an empty
+	// post name.
+	if ( empty($post_name) ) {
+		if ( !in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) )
+			$post_name = sanitize_title($post_title);
+		else
+			$post_name = '';
+	} else {
+		// On updates, we need to check to see if it's using the old, fixed sanitization context.
+		$check_name = sanitize_title( $post_name, '', 'old-save' );
+		if ( $update && strtolower( urlencode( $post_name ) ) == $check_name && get_post_field( 'post_name', $ID ) == $check_name )
+			$post_name = $check_name;
+		else // new post, or slug has changed.
+			$post_name = sanitize_title($post_name);
+	}
+	// 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
+	if ( empty($post_date) || '0000-00-00 00:00:00' == $post_date )
+		$post_date = current_time('mysql');
+		// validate the date
+		$mm = substr( $post_date, 5, 2 );
+		$jj = substr( $post_date, 8, 2 );
+		$aa = substr( $post_date, 0, 4 );
+		$valid_date = wp_checkdate( $mm, $jj, $aa, $post_date );
+		if ( !$valid_date ) {
+			if ( $wp_error )
+				return new WP_Error( 'invalid_date', __( 'Whoops, the provided date is invalid.' ) );
+			else
+				return 0;
+		}
+	if ( empty($post_date_gmt) || '0000-00-00 00:00:00' == $post_date_gmt ) {
+		if ( !in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) )
+			$post_date_gmt = get_gmt_from_date($post_date);
+		else
+			$post_date_gmt = '0000-00-00 00:00:00';
+	}
+	if ( $update || '0000-00-00 00:00:00' == $post_date ) {
+		$post_modified     = current_time( 'mysql' );
+		$post_modified_gmt = current_time( 'mysql', 1 );
+	} else {
+		$post_modified     = $post_date;
+		$post_modified_gmt = $post_date_gmt;
+	}
+	if ( 'publish' == $post_status ) {
+		$now = gmdate('Y-m-d H:i:59');
+		if ( mysql2date('U', $post_date_gmt, false) > mysql2date('U', $now, false) )
+			$post_status = 'future';
+	} elseif( 'future' == $post_status ) {
+		$now = gmdate('Y-m-d H:i:59');
+		if ( mysql2date('U', $post_date_gmt, false) <= mysql2date('U', $now, false) )
+			$post_status = 'publish';
+	}
+	if ( empty($comment_status) ) {
+		if ( $update )
+			$comment_status = 'closed';
+		else
+			$comment_status = get_option('default_comment_status');
+	}
+	if ( empty($ping_status) )
+		$ping_status = get_option('default_ping_status');
+	if ( isset($to_ping) )
+		$to_ping = sanitize_trackback_urls( $to_ping );
+	else
+		$to_ping = '';
+	if ( ! isset($pinged) )
+		$pinged = '';
+	if ( isset($post_parent) )
+		$post_parent = (int) $post_parent;
+	else
+		$post_parent = 0;
+	// Check the post_parent to see if it will cause a hierarchy loop
+	$post_parent = apply_filters( 'wp_insert_post_parent', $post_parent, $post_ID, compact( array_keys( $postarr ) ), $postarr );
+	if ( isset($menu_order) )
+		$menu_order = (int) $menu_order;
+	else
+		$menu_order = 0;
+	if ( !isset($post_password) || 'private' == $post_status )
+		$post_password = '';
+	$post_name = wp_unique_post_slug($post_name, $post_ID, $post_status, $post_type, $post_parent);
+	// expected_slashed (everything!)
+	$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' ) );
+	$data = apply_filters('wp_insert_post_data', $data, $postarr);
+	$data = wp_unslash( $data );
+	$where = array( 'ID' => $post_ID );
+	if ( $update ) {
+		do_action( 'pre_post_update', $post_ID, $data );
+		if ( false === $wpdb->update( $wpdb->posts, $data, $where ) ) {
+			if ( $wp_error )
+				return new WP_Error('db_update_error', __('Could not update post in the database'), $wpdb->last_error);
+			else
+				return 0;
+		}
+	} else {
+		if ( isset($post_mime_type) )
+			$data['post_mime_type'] = wp_unslash( $post_mime_type ); // This isn't in the update
+		// If there is a suggested ID, use it if not already present
+		if ( !empty($import_id) ) {
+			$import_id = (int) $import_id;
+			if ( ! $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id) ) ) {
+				$data['ID'] = $import_id;
+			}
+		}
+		if ( false === $wpdb->insert( $wpdb->posts, $data ) ) {
+			if ( $wp_error )
+				return new WP_Error('db_insert_error', __('Could not insert post into the database'), $wpdb->last_error);
+			else
+				return 0;
+		}
+		$post_ID = (int) $wpdb->insert_id;
+		// use the newly generated $post_ID
+		$where = array( 'ID' => $post_ID );
+	}
+	if ( empty($data['post_name']) && !in_array( $data['post_status'], array( 'draft', 'pending', 'auto-draft' ) ) ) {
+		$data['post_name'] = sanitize_title($data['post_title'], $post_ID);
+		$wpdb->update( $wpdb->posts, array( 'post_name' => $data['post_name'] ), $where );
+	}
+	if ( is_object_in_taxonomy($post_type, 'category') )
+		wp_set_post_categories( $post_ID, $post_category );
+	if ( isset( $tags_input ) && is_object_in_taxonomy($post_type, 'post_tag') )
+		wp_set_post_tags( $post_ID, $tags_input );
+	// new-style support for all custom taxonomies
+	if ( !empty($tax_input) ) {
+		foreach ( $tax_input as $taxonomy => $tags ) {
+			$taxonomy_obj = get_taxonomy($taxonomy);
+			if ( is_array($tags) ) // array = hierarchical, string = non-hierarchical.
+				$tags = array_filter($tags);
+			if ( current_user_can($taxonomy_obj->cap->assign_terms) )
+				wp_set_post_terms( $post_ID, $tags, $taxonomy );
+		}
+	}
+	$current_guid = get_post_field( 'guid', $post_ID );
+	// Set GUID
+	if ( !$update && '' == $current_guid )
+		$wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post_ID ) ), $where );
+	clean_post_cache( $post_ID );
+	$post = get_post($post_ID);
+	if ( !empty($page_template) && 'page' == $data['post_type'] ) {
+		$post->page_template = $page_template;
+		$page_templates = wp_get_theme()->get_page_templates();
+		if ( 'default' != $page_template && ! isset( $page_templates[ $page_template ] ) ) {
+			if ( $wp_error )
+				return new WP_Error('invalid_page_template', __('The page template is invalid.'));
+			else
+				return 0;
+		}
+		update_post_meta($post_ID, '_wp_page_template',  $page_template);
+	}
+	wp_transition_post_status($data['post_status'], $previous_status, $post);
+	if ( $update ) {
+		do_action('edit_post', $post_ID, $post);
+		$post_after = get_post($post_ID);
+		do_action( 'post_updated', $post_ID, $post_after, $post_before);
+	}
+	do_action( "save_post_{$post->post_type}", $post_ID, $post, $update );
+	do_action( 'save_post', $post_ID, $post, $update );
+	do_action( 'wp_insert_post', $post_ID, $post, $update );
+	return $post_ID;
+}
+/**
+* Update a post with new post data.
+*
+* The date does not have to be set for drafts. You can set the date and it will
+* not be overridden.
+*
+* @since 1.0.0
+*
+* @param array|object $postarr Post data. Arrays are expected to be escaped, objects are not.
+* @param bool $wp_error Optional. Allow return of WP_Error on failure.
+* @return int|WP_Error The value 0 or WP_Error on failure. The post ID on success.
+*/
+function wp_update_post( $postarr = array(), $wp_error = false ) {
+	if ( is_object($postarr) ) {
+		// non-escaped post was passed
+		$postarr = get_object_vars($postarr);
+		$postarr = wp_slash($postarr);
+	}
+	// First, get all of the original fields
+	$post = get_post($postarr['ID'], ARRAY_A);
+	if ( is_null( $post ) ) {
+		if ( $wp_error )
+			return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
+		return 0;
+	}
+	// Escape data pulled from DB.
+	$post = wp_slash($post);
+	// Passed post category list overwrites existing category list if not empty.
+	if ( isset($postarr['post_category']) && is_array($postarr['post_category'])
+			 && 0 != count($postarr['post_category']) )
+		$post_cats = $postarr['post_category'];
+	else
+		$post_cats = $post['post_category'];
+	// Drafts shouldn't be assigned a date unless explicitly done so by the user
+	if ( isset( $post['post_status'] ) && in_array($post['post_status'], array('draft', 'pending', 'auto-draft')) && empty($postarr['edit_date']) &&
+			 ('0000-00-00 00:00:00' == $post['post_date_gmt']) )
+		$clear_date = true;
+	else
+		$clear_date = false;
+	// Merge old and new fields with new fields overwriting old ones.
+	$postarr = array_merge($post, $postarr);
+	$postarr['post_category'] = $post_cats;
+	if ( $clear_date ) {
+		$postarr['post_date'] = current_time('mysql');
+		$postarr['post_date_gmt'] = '';
+	}
+	if ($postarr['post_type'] == 'attachment')
+		return wp_insert_attachment($postarr);
+	return wp_insert_post( $postarr, $wp_error );
+}
+/**
+* Publish a post by transitioning the post status.
+*
+* @since 2.1.0
+* @uses $wpdb
+* @uses do_action() Calls 'edit_post', 'save_post_{$post_type}', 'save_post' and 'wp_insert_post' on post_id and post data.
+*
+* @param int|object $post Post ID or object.
+*/
+function wp_publish_post( $post ) {
+	global $wpdb;
+	if ( ! $post = get_post( $post ) )
+		return;
+	if ( 'publish' == $post->post_status )
+		return;
+	$wpdb->update( $wpdb->posts, array( 'post_status' => 'publish' ), array( 'ID' => $post->ID ) );
+	clean_post_cache( $post->ID );
+	$old_status = $post->post_status;
+	$post->post_status = 'publish';
+	wp_transition_post_status( 'publish', $old_status, $post );
+	do_action( 'edit_post', $post->ID, $post );
+	do_action( "save_post_{$post->post_type}", $post->ID, $post, true );
+	do_action( 'save_post', $post->ID, $post, true );
+	do_action( 'wp_insert_post', $post->ID, $post, true );
+}
+/**
+* Publish future post and make sure post ID has future post status.
+*
+* Invoked by cron 'publish_future_post' event. This safeguard prevents cron
+* from publishing drafts, etc.
+*
+* @since 2.5.0
+*
+* @param int $post_id Post ID.
+* @return null Nothing is returned. Which can mean that no action is required or post was published.
+*/
+function check_and_publish_future_post($post_id) {
+	$post = get_post($post_id);
+	if ( empty($post) )
+		return;
+	if ( 'future' != $post->post_status )
+		return;
+	$time = strtotime( $post->post_date_gmt . ' GMT' );
+	if ( $time > time() ) { // Uh oh, someone jumped the gun!
+		wp_clear_scheduled_hook( 'publish_future_post', array( $post_id ) ); // clear anything else in the system
+		wp_schedule_single_event( $time, 'publish_future_post', array( $post_id ) );
+		return;
+	}
+	return wp_publish_post($post_id);
+}
+/**
+* Computes a unique slug for the post, when given the desired slug and some post details.
+*
+* @since 2.8.0
+*
+* @global wpdb $wpdb
+* @global WP_Rewrite $wp_rewrite
+* @param string $slug the desired slug (post_name)
+* @param integer $post_ID
+* @param string $post_status no uniqueness checks are made if the post is still draft or pending
+* @param string $post_type
+* @param integer $post_parent
+* @return string unique slug for the post, based on $post_name (with a -1, -2, etc. suffix)
+*/
+function wp_unique_post_slug( $slug, $post_ID, $post_status, $post_type, $post_parent ) {
+	if ( in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) || ( 'inherit' == $post_status && 'revision' == $post_type ) )
+		return $slug;
+	global $wpdb, $wp_rewrite;
+	$original_slug = $slug;
+	$feeds = $wp_rewrite->feeds;
+	if ( ! is_array( $feeds ) )
+		$feeds = array();
+	$hierarchical_post_types = get_post_types( array('hierarchical' => true) );
+	if ( 'attachment' == $post_type ) {
+		// Attachment slugs must be unique across all types.
+		$check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND ID != %d LIMIT 1";
+		$post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_ID ) );
+		if ( $post_name_check || in_array( $slug, $feeds ) || apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', false, $slug ) ) {
+			$suffix = 2;
+			do {
+				$alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+				$post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_ID ) );
+				$suffix++;
+			} while ( $post_name_check );
+			$slug = $alt_post_name;
+		}
+	} elseif ( in_array( $post_type, $hierarchical_post_types ) ) {
+		if ( 'nav_menu_item' == $post_type )
+			return $slug;
+		// Page slugs must be unique within their own trees. Pages are in a separate
+		// namespace than posts so page slugs are allowed to overlap post slugs.
+		$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";
+		$post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_ID, $post_parent ) );
+		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 ) ) {
+			$suffix = 2;
+			do {
+				$alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+				$post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_ID, $post_parent ) );
+				$suffix++;
+			} while ( $post_name_check );
+			$slug = $alt_post_name;
+		}
+	} else {
+		// Post slugs must be unique across all posts.
+		$check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d LIMIT 1";
+		$post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_ID ) );
+		if ( $post_name_check || in_array( $slug, $feeds ) || apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type ) ) {
+			$suffix = 2;
+			do {
+				$alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+				$post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) );
+				$suffix++;
+			} while ( $post_name_check );
+			$slug = $alt_post_name;
+		}
+	}
+	return apply_filters( 'wp_unique_post_slug', $slug, $post_ID, $post_status, $post_type, $post_parent, $original_slug );
+}
+/**
+* Truncates a post slug.
+*
+* @since 3.6.0
+* @access private
+* @uses utf8_uri_encode() Makes sure UTF-8 characters are properly cut and encoded.
+*
+* @param string $slug The slug to truncate.
+* @param int $length Max length of the slug.
+* @return string The truncated slug.
+*/
+function _truncate_post_slug( $slug, $length = 200 ) {
+	if ( strlen( $slug ) > $length ) {
+		$decoded_slug = urldecode( $slug );
+		if ( $decoded_slug === $slug )
+			$slug = substr( $slug, 0, $length );
+		else
+			$slug = utf8_uri_encode( $decoded_slug, $length );
+	}
+	return rtrim( $slug, '-' );
+}
+/**
+* Adds tags to a post.
+*
+* @uses wp_set_post_tags() Same first two parameters, but the last parameter is always set to true.
+*
+* @package WordPress
+* @subpackage Post
+* @since 2.3.0
+*
+* @param int $post_id Post ID
+* @param string $tags The tags to set for the post, separated by commas.
+* @return bool|null Will return false if $post_id is not an integer or is 0. Will return null otherwise
+*/
+function wp_add_post_tags($post_id = 0, $tags = '') {
+	return wp_set_post_tags($post_id, $tags, true);
+}
+/**
+* Set the tags for a post.
+*
+* @since 2.3.0
+* @uses wp_set_object_terms() Sets the tags for the post.
+*
+* @param int $post_id Post ID.
+* @param string $tags The tags to set for the post, separated by commas.
+* @param bool $append If true, don't delete existing tags, just add on. If false, replace the tags with the new tags.
+* @return mixed Array of affected term IDs. WP_Error or false on failure.
+*/
+function wp_set_post_tags( $post_id = 0, $tags = '', $append = false ) {
+	return wp_set_post_terms( $post_id, $tags, 'post_tag', $append);
+}
+/**
+* Set the terms for a post.
+*
+* @since 2.8.0
+* @uses wp_set_object_terms() Sets the tags for the post.
+*
+* @param int $post_id Post ID.
+* @param string $tags The tags to set for the post, separated by commas.
+* @param string $taxonomy Taxonomy name. Defaults to 'post_tag'.
+* @param bool $append If true, don't delete existing tags, just add on. If false, replace the tags with the new tags.
+* @return mixed Array of affected term IDs. WP_Error or false on failure.
+*/
+function wp_set_post_terms( $post_id = 0, $tags = '', $taxonomy = 'post_tag', $append = false ) {
+	$post_id = (int) $post_id;
+	if ( !$post_id )
+		return false;
+	if ( empty($tags) )
+		$tags = array();
+	if ( ! is_array( $tags ) ) {
+		$comma = _x( ',', 'tag delimiter' );
+		if ( ',' !== $comma )
+			$tags = str_replace( $comma, ',', $tags );
+		$tags = explode( ',', trim( $tags, " \n\t\r\0\x0B," ) );
+	}
+	// Hierarchical taxonomies must always pass IDs rather than names so that children with the same
+	// names but different parents aren't confused.
+	if ( is_taxonomy_hierarchical( $taxonomy ) ) {
+		$tags = array_unique( array_map( 'intval', $tags ) );
+	}
+	return wp_set_object_terms( $post_id, $tags, $taxonomy, $append );
+}
+/**
+* Set categories for a post.
+*
+* If the post categories parameter is not set, then the default category is
+* going used.
+*
+* @since 2.1.0
+*
+* @param int $post_ID Post ID.
+* @param array|int $post_categories Optional. List of categories or ID of category.
+* @param bool $append If true, don't delete existing categories, just add on. If false, replace the categories with the new categories.
+* @return bool|mixed
+*/
+function wp_set_post_categories( $post_ID = 0, $post_categories = array(), $append = false ) {
+	$post_ID = (int) $post_ID;
+	$post_type = get_post_type( $post_ID );
+	$post_status = get_post_status( $post_ID );
+	// If $post_categories isn't already an array, make it one:
+	$post_categories = (array) $post_categories;
+	if ( empty( $post_categories ) ) {
+		if ( 'post' == $post_type && 'auto-draft' != $post_status ) {
+			$post_categories = array( get_option('default_category') );
+			$append = false;
+		} else {
+			$post_categories = array();
+		}
+	} else if ( 1 == count($post_categories) && '' == reset($post_categories) ) {
+		return true;
+	}
+	return wp_set_post_terms( $post_ID, $post_categories, 'category', $append );
+}
+/**
+* Transition the post status of a post.
+*
+* Calls hooks to transition post status.
+*
+* The first is 'transition_post_status' with new status, old status, and post data.
+*
+* The next action called is 'OLDSTATUS_to_NEWSTATUS' the 'NEWSTATUS' is the
+* $new_status parameter and the 'OLDSTATUS' is $old_status parameter; it has the
+* post data.
+*
+* The final action is named 'NEWSTATUS_POSTTYPE', 'NEWSTATUS' is from the $new_status
+* parameter and POSTTYPE is post_type post data.
+*
+* @since 2.3.0
+* @link http://codex.wordpress.org/Post_Status_Transitions
+*
+* @uses do_action() Calls 'transition_post_status' on $new_status, $old_status and
+*  $post if there is a status change.
+* @uses do_action() Calls '{$old_status}_to_{$new_status}' on $post if there is a status change.
+* @uses do_action() Calls '{$new_status}_{$post->post_type}' on post ID and $post.
+*
+* @param string $new_status Transition to this post status.
+* @param string $old_status Previous post status.
+* @param object $post Post data.
+*/
+function wp_transition_post_status($new_status, $old_status, $post) {
+	do_action('transition_post_status', $new_status, $old_status, $post);
+	do_action("{$old_status}_to_{$new_status}", $post);
+	do_action("{$new_status}_{$post->post_type}", $post->ID, $post);
+}
+//
+// Trackback and ping functions
+//
+/**
+* Add a URL to those already pung.
+*
+* @since 1.5.0
+* @uses $wpdb
+*
+* @param int $post_id Post ID.
+* @param string $uri Ping URI.
+* @return int How many rows were updated.
+*/
+function add_ping($post_id, $uri) {
+	global $wpdb;
+	$pung = $wpdb->get_var( $wpdb->prepare( "SELECT pinged FROM $wpdb->posts WHERE ID = %d", $post_id ));
+	$pung = trim($pung);
+	$pung = preg_split('/\s/', $pung);
+	$pung[] = $uri;
+	$new = implode("\n", $pung);
+	$new = apply_filters('add_ping', $new);
+	// expected_slashed ($new)
+	$new = wp_unslash($new);
+	return $wpdb->update( $wpdb->posts, array( 'pinged' => $new ), array( 'ID' => $post_id ) );
+}
+/**
+* Retrieve enclosures already enclosed for a post.
+*
+* @since 1.5.0
+*
+* @param int $post_id Post ID.
+* @return array List of enclosures
+*/
+function get_enclosed($post_id) {
+	$custom_fields = get_post_custom( $post_id );
+	$pung = array();
+	if ( !is_array( $custom_fields ) )
+		return $pung;
+	foreach ( $custom_fields as $key => $val ) {
+		if ( 'enclosure' != $key || !is_array( $val ) )
+			continue;
+		foreach( $val as $enc ) {
+			$enclosure = explode( "\n", $enc );
+			$pung[] = trim( $enclosure[ 0 ] );
+		}
+	}
+	$pung = apply_filters('get_enclosed', $pung, $post_id);
+	return $pung;
+}
+/**
+* Retrieve URLs already pinged for a post.
+*
+* @since 1.5.0
+* @uses $wpdb
+*
+* @param int $post_id Post ID.
+* @return array
+*/
+function get_pung($post_id) {
+	global $wpdb;
+	$pung = $wpdb->get_var( $wpdb->prepare( "SELECT pinged FROM $wpdb->posts WHERE ID = %d", $post_id ));
+	$pung = trim($pung);
+	$pung = preg_split('/\s/', $pung);
+	$pung = apply_filters('get_pung', $pung);
+	return $pung;
+}
+/**
+* Retrieve URLs that need to be pinged.
+*
+* @since 1.5.0
+* @uses $wpdb
+*
+* @param int $post_id Post ID
+* @return array
+*/
+function get_to_ping($post_id) {
+	global $wpdb;
+	$to_ping = $wpdb->get_var( $wpdb->prepare( "SELECT to_ping FROM $wpdb->posts WHERE ID = %d", $post_id ));
+	$to_ping = sanitize_trackback_urls( $to_ping );
+	$to_ping = preg_split('/\s/', $to_ping, -1, PREG_SPLIT_NO_EMPTY);
+	$to_ping = apply_filters('get_to_ping',  $to_ping);
+	return $to_ping;
+}
+/**
+* Do trackbacks for a list of URLs.
+*
+* @since 1.0.0
+*
+* @param string $tb_list Comma separated list of URLs
+* @param int $post_id Post ID
+*/
+function trackback_url_list($tb_list, $post_id) {
+	if ( ! empty( $tb_list ) ) {
+		// get post data
+		$postdata = get_post($post_id, ARRAY_A);
+		// import postdata as variables
+		extract($postdata, EXTR_SKIP);
+		// form an excerpt
+		$excerpt = strip_tags($post_excerpt ? $post_excerpt : $post_content);
+		if (strlen($excerpt) > 255) {
+			$excerpt = substr($excerpt,0,252) . '&hellip;';
+		}
+		$trackback_urls = explode(',', $tb_list);
+		foreach( (array) $trackback_urls as $tb_url) {
+			$tb_url = trim($tb_url);
+			trackback($tb_url, wp_unslash($post_title), $excerpt, $post_id);
+		}
+	}
+}
+//
+// Page functions
+//
+/**
+* Get a list of page IDs.
+*
+* @since 2.0.0
+* @uses $wpdb
+*
+* @return array List of page IDs.
+*/
+function get_all_page_ids() {
+	global $wpdb;
+	$page_ids = wp_cache_get('all_page_ids', 'posts');
+	if ( ! is_array( $page_ids ) ) {
+		$page_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE post_type = 'page'");
+		wp_cache_add('all_page_ids', $page_ids, 'posts');
+	}
+	return $page_ids;
+}
+/**
+* Retrieves page data given a page ID or page object.
+*
+* Use get_post() instead of get_page().
+*
+* @since 1.5.1
+* @deprecated 3.5.0
+*
+* @param mixed $page Page object or page ID. Passed by reference.
+* @param string $output What to output. OBJECT, ARRAY_A, or ARRAY_N.
+* @param string $filter How the return value should be filtered.
+* @return WP_Post|null WP_Post on success or null on failure
+*/
+function get_page( $page, $output = OBJECT, $filter = 'raw') {
+	return get_post( $page, $output, $filter );
+}
+/**
+* Retrieves a page given its path.
+*
+* @since 2.1.0
+* @uses $wpdb
+*
+* @param string $page_path Page path
+* @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A. Default OBJECT.
+* @param string $post_type Optional. Post type. Default page.
+* @return WP_Post|null WP_Post on success or null on failure
+*/
+function get_page_by_path($page_path, $output = OBJECT, $post_type = 'page') {
+	global $wpdb;
+	$page_path = rawurlencode(urldecode($page_path));
+	$page_path = str_replace('%2F', '/', $page_path);
+	$page_path = str_replace('%20', ' ', $page_path);
+	$parts = explode( '/', trim( $page_path, '/' ) );
+	$parts = esc_sql( $parts );
+	$parts = array_map( 'sanitize_title_for_query', $parts );
+	$in_string = "'". implode( "','", $parts ) . "'";
+	$post_type_sql = esc_sql( $post_type );
+	$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 );
+	$revparts = array_reverse( $parts );
+	$foundid = 0;
+	foreach ( (array) $pages as $page ) {
+		if ( $page->post_name == $revparts[0] ) {
+			$count = 0;
+			$p = $page;
+			while ( $p->post_parent != 0 && isset( $pages[ $p->post_parent ] ) ) {
+				$count++;
+				$parent = $pages[ $p->post_parent ];
+				if ( ! isset( $revparts[ $count ] ) || $parent->post_name != $revparts[ $count ] )
+					break;
+				$p = $parent;
+			}
+			if ( $p->post_parent == 0 && $count+1 == count( $revparts ) && $p->post_name == $revparts[ $count ] ) {
+				$foundid = $page->ID;
+				if ( $page->post_type == $post_type )
+					break;
+			}
+		}
+	}
+	if ( $foundid )
+		return get_post( $foundid, $output );
+	return null;
+}
+/**
+* Retrieve a page given its title.
+*
+* @since 2.1.0
+* @uses $wpdb
+*
+* @param string $page_title Page title
+* @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A. Default OBJECT.
+* @param string $post_type Optional. Post type. Default page.
+* @return WP_Post|null WP_Post on success or null on failure
+*/
+function get_page_by_title($page_title, $output = OBJECT, $post_type = 'page' ) {
+	global $wpdb;
+	$page = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type= %s", $page_title, $post_type ) );
+	if ( $page )
+		return get_post( $page, $output );
+	return null;
+}
+/**
+* Retrieve child pages from list of pages matching page ID.
+*
+* Matches against the pages parameter against the page ID. Also matches all
+* children for the same to retrieve all children of a page. Does not make any
+* SQL queries to get the children.
+*
+* @since 1.5.1
+*
+* @param int $page_id Page ID.
+* @param array $pages List of pages' objects.
+* @return array
+*/
+function get_page_children($page_id, $pages) {
+	$page_list = array();
+	foreach ( (array) $pages as $page ) {
+		if ( $page->post_parent == $page_id ) {
+			$page_list[] = $page;
+			if ( $children = get_page_children($page->ID, $pages) )
+				$page_list = array_merge($page_list, $children);
+		}
+	}
+	return $page_list;
+}
+/**
+* Order the pages with children under parents in a flat list.
+*
+* It uses auxiliary structure to hold parent-children relationships and
+* runs in O(N) complexity
+*
+* @since 2.0.0
+*
+* @param array $pages Posts array.
+* @param int $page_id Parent page ID.
+* @return array A list arranged by hierarchy. Children immediately follow their parents.
+*/
+function get_page_hierarchy( &$pages, $page_id = 0 ) {
+	if ( empty( $pages ) ) {
+		$result = array();
+		return $result;
+	}
+	$children = array();
+	foreach ( (array) $pages as $p ) {
+		$parent_id = intval( $p->post_parent );
+		$children[ $parent_id ][] = $p;
+	}
+	$result = array();
+	_page_traverse_name( $page_id, $children, $result );
+	return $result;
+}
+/**
+* function to traverse and return all the nested children post names of a root page.
+* $children contains parent-children relations
+*
+* @since 2.9.0
+*/
+function _page_traverse_name( $page_id, &$children, &$result ){
+	if ( isset( $children[ $page_id ] ) ){
+		foreach( (array)$children[ $page_id ] as $child ) {
+			$result[ $child->ID ] = $child->post_name;
+			_page_traverse_name( $child->ID, $children, $result );
+		}
+	}
+}
+/**
+* Builds URI for a page.
+*
+* Sub pages will be in the "directory" under the parent page post name.
+*
+* @since 1.5.0
+*
+* @param mixed $page Page object or page ID.
+* @return string|false Page URI, false on error.
+*/
+function get_page_uri( $page ) {
+	$page = get_post( $page );
+	if ( ! $page )
+		return false;
+	$uri = $page->post_name;
+	foreach ( $page->ancestors as $parent ) {
+		$uri = get_post( $parent )->post_name . '/' . $uri;
+	}
+	return $uri;
+}
+/**
+* Retrieve a list of pages.
+*
+* @global wpdb $wpdb WordPress database abstraction object
+*
+* @since 1.5.0
+*
+* @param mixed $args {
+*     Array or string of arguments. Optional.
+*
+*     @type int    'child_of'     Page ID to return child and grandchild pages of. Default 0, or no restriction.
+*     @type string 'sort_order'   How to sort retrieved pages.
+*                                 Default 'ASC'. Accepts 'ASC', 'DESC'.
+*     @type string 'sort_column'  What columns to sort pages by, comma-separated.
+*                                 Default 'post_title'. Accepts 'post_author', 'post_date', 'post_title', 'post_name',
+*                                 'post_modified', 'post_modified_gmt', 'menu_order', 'post_parent', 'ID', 'rand',
+*                                 'comment_count'. 'post_' can be omitted for any values that start with it.
+*     @type bool   'hierarchical' Whether to return pages hierarchically. Default true.
+*     @type array  'exclude'      Array of page IDs to exclude.
+*     @type array  'include'      Array of page IDs to include. Cannot be used with 'child_of', 'parent', 'exclude',
+*                                 'meta_key', 'meta_value', or 'hierarchical'.
+*     @type string 'meta_key'     Only include pages with this meta key.
+*     @type string 'meta_value'   Only include pages with this meta value.
+*     @type string 'authors'      A comma-separated list of author IDs.
+*     @type int    'parent'       Page ID to return direct children of. 'hierarchical' must be false.
+*                                 Default -1, or no restriction.
+*     @type int    'exclude_tree' Remove all children of the given ID from returned pages.
+*     @type int    'number'       The number of pages to return. Default 0, or all pages.
+*     @type int    'offset'       The number of pages to skip before returning. Requires 'number'.
+*                                 Default 0.
+*     @type string 'post_type'    The post type to query.
+*                                 Default 'page'.
+*     @type string 'post_status'  A comma-separated list of post status types to include.
+*                                 Default 'publish'.
+* }
+* @return array List of pages matching defaults or $args.
+*/
+function get_pages( $args = array() ) {
+	global $wpdb;
+	$pages = false;
+	$defaults = array(
+		'child_of' => 0, 'sort_order' => 'ASC',
+		'sort_column' => 'post_title', 'hierarchical' => 1,
+		'exclude' => array(), 'include' => array(),
+		'meta_key' => '', 'meta_value' => '',
+		'authors' => '', 'parent' => -1, 'exclude_tree' => '',
+		'number' => '', 'offset' => 0,
+		'post_type' => 'page', 'post_status' => 'publish',
+	);
+	$r = wp_parse_args( $args, $defaults );
+	extract( $r, EXTR_SKIP );
+	$number = (int) $number;
+	$offset = (int) $offset;
+	// Make sure the post type is hierarchical
+	$hierarchical_post_types = get_post_types( array( 'hierarchical' => true ) );
+	if ( !in_array( $post_type, $hierarchical_post_types ) )
+		return $pages;
+	if ( $parent > 0 && ! $child_of )
+		$hierarchical = false;
+	// Make sure we have a valid post status
+	if ( !is_array( $post_status ) )
+		$post_status = explode( ',', $post_status );
+	if ( array_diff( $post_status, get_post_stati() ) )
+		return $pages;
+	// $args can be whatever, only use the args defined in defaults to compute the key
+	$key = md5( serialize( compact(array_keys($defaults)) ) );
+	$last_changed = wp_cache_get( 'last_changed', 'posts' );
+	if ( ! $last_changed ) {
+		$last_changed = microtime();
+		wp_cache_set( 'last_changed', $last_changed, 'posts' );
+	}
+	$cache_key = "get_pages:$key:$last_changed";
+	if ( $cache = wp_cache_get( $cache_key, 'posts' ) ) {
+		// Convert to WP_Post instances
+		$pages = array_map( 'get_post', $cache );
+		$pages = apply_filters('get_pages', $pages, $r);
+		return $pages;
+	}
+	if ( !is_array($cache) )
+		$cache = array();
+	$inclusions = '';
+	if ( ! empty( $include ) ) {
+		$child_of = 0; //ignore child_of, parent, exclude, meta_key, and meta_value params if using include
+		$parent = -1;
+		$exclude = '';
+		$meta_key = '';
+		$meta_value = '';
+		$hierarchical = false;
+		$incpages = wp_parse_id_list( $include );
+		if ( ! empty( $incpages ) )
+			$inclusions = ' AND ID IN (' . implode( ',', $incpages ) .  ')';
+	}
+	$exclusions = '';
+	if ( ! empty( $exclude ) ) {
+		$expages = wp_parse_id_list( $exclude );
+		if ( ! empty( $expages ) )
+			$exclusions = ' AND ID NOT IN (' . implode( ',', $expages ) .  ')';
+	}
+	$author_query = '';
+	if (!empty($authors)) {
+		$post_authors = preg_split('/[\s,]+/',$authors);
+		if ( ! empty( $post_authors ) ) {
+			foreach ( $post_authors as $post_author ) {
+				//Do we have an author id or an author login?
+				if ( 0 == intval($post_author) ) {
+					$post_author = get_user_by('login', $post_author);
+					if ( empty($post_author) )
+						continue;
+					if ( empty($post_author->ID) )
+						continue;
+					$post_author = $post_author->ID;
+				}
+				if ( '' == $author_query )
+					$author_query = $wpdb->prepare(' post_author = %d ', $post_author);
+				else
+					$author_query .= $wpdb->prepare(' OR post_author = %d ', $post_author);
+			}
+			if ( '' != $author_query )
+				$author_query = " AND ($author_query)";
+		}
+	}
+	$join = '';
+	$where = "$exclusions $inclusions ";
+	if ( '' !== $meta_key || '' !== $meta_value ) {
+		$join = " LEFT JOIN $wpdb->postmeta ON ( $wpdb->posts.ID = $wpdb->postmeta.post_id )";
+		// meta_key and meta_value might be slashed
+		$meta_key = wp_unslash($meta_key);
+		$meta_value = wp_unslash($meta_value);
+		if ( '' !== $meta_key )
+			$where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_key = %s", $meta_key);
+		if ( '' !== $meta_value )
+			$where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_value = %s", $meta_value);
+	}
+	if ( is_array( $parent ) ) {
+		$post_parent__in = implode( ',', array_map( 'absint', (array) $parent ) );
+		if ( ! empty( $post_parent__in ) )
+			$where .= " AND post_parent IN ($post_parent__in)";
+	} elseif ( $parent >= 0 ) {
+		$where .= $wpdb->prepare(' AND post_parent = %d ', $parent);
+	}
+	if ( 1 == count( $post_status ) ) {
+		$where_post_type = $wpdb->prepare( "post_type = %s AND post_status = %s", $post_type, array_shift( $post_status ) );
+	} else {
+		$post_status = implode( "', '", $post_status );
+		$where_post_type = $wpdb->prepare( "post_type = %s AND post_status IN ('$post_status')", $post_type );
+	}
+	$orderby_array = array();
+	$allowed_keys = array('author', 'post_author', 'date', 'post_date', 'title', 'post_title', 'name', 'post_name', 'modified',
+						  'post_modified', 'modified_gmt', 'post_modified_gmt', 'menu_order', 'parent', 'post_parent',
+						  'ID', 'rand', 'comment_count');
+	foreach ( explode( ',', $sort_column ) as $orderby ) {
+		$orderby = trim( $orderby );
+		if ( !in_array( $orderby, $allowed_keys ) )
+			continue;
+		switch ( $orderby ) {
+			case 'menu_order':
+				break;
+			case 'ID':
+				$orderby = "$wpdb->posts.ID";
+				break;
+			case 'rand':
+				$orderby = 'RAND()';
+				break;
+			case 'comment_count':
+				$orderby = "$wpdb->posts.comment_count";
+				break;
+			default:
+				if ( 0 === strpos( $orderby, 'post_' ) )
+					$orderby = "$wpdb->posts." . $orderby;
+				else
+					$orderby = "$wpdb->posts.post_" . $orderby;
+		}
+		$orderby_array[] = $orderby;
+	}
+	$sort_column = ! empty( $orderby_array ) ? implode( ',', $orderby_array ) : "$wpdb->posts.post_title";
+	$sort_order = strtoupper( $sort_order );
+	if ( '' !== $sort_order && !in_array( $sort_order, array( 'ASC', 'DESC' ) ) )
+		$sort_order = 'ASC';
+	$query = "SELECT * FROM $wpdb->posts $join WHERE ($where_post_type) $where ";
+	$query .= $author_query;
+	$query .= " ORDER BY " . $sort_column . " " . $sort_order ;
+	if ( !empty($number) )
+		$query .= ' LIMIT ' . $offset . ',' . $number;
+	$pages = $wpdb->get_results($query);
+	if ( empty($pages) ) {
+		$pages = apply_filters('get_pages', array(), $r);
+		return $pages;
+	}
+	// Sanitize before caching so it'll only get done once
+	$num_pages = count($pages);
+	for ($i = 0; $i < $num_pages; $i++) {
+		$pages[$i] = sanitize_post($pages[$i], 'raw');
+	}
+	// Update cache.
+	update_post_cache( $pages );
+	if ( $child_of || $hierarchical )
+		$pages = get_page_children($child_of, $pages);
+	if ( !empty($exclude_tree) ) {
+		$exclude = (int) $exclude_tree;
+		$children = get_page_children($exclude, $pages);
+		$excludes = array();
+		foreach ( $children as $child )
+			$excludes[] = $child->ID;
+		$excludes[] = $exclude;
+		$num_pages = count($pages);
+		for ( $i = 0; $i < $num_pages; $i++ ) {
+			if ( in_array($pages[$i]->ID, $excludes) )
+				unset($pages[$i]);
+		}
+	}
+	$page_structure = array();
+	foreach ( $pages as $page )
+		$page_structure[] = $page->ID;
+	wp_cache_set( $cache_key, $page_structure, 'posts' );
+	// Convert to WP_Post instances
+	$pages = array_map( 'get_post', $pages );
+	$pages = apply_filters('get_pages', $pages, $r);
+	return $pages;
+}
+//
+// Attachment functions
+//
+/**
+* Check if the attachment URI is local one and is really an attachment.
+*
+* @since 2.0.0
+*
+* @param string $url URL to check
+* @return bool True on success, false on failure.
+*/
+function is_local_attachment($url) {
+	if (strpos($url, home_url()) === false)
+		return false;
+	if (strpos($url, home_url('/?attachment_id=')) !== false)
+		return true;
+	if ( $id = url_to_postid($url) ) {
+		$post = get_post($id);
+		if ( 'attachment' == $post->post_type )
+			return true;
+	}
+	return false;
+}
+/**
+* Insert an attachment.
+*
+* If you set the 'ID' in the $object parameter, it will mean that you are
+* updating and attempt to update the attachment. You can also set the
+* attachment name or title by setting the key 'post_name' or 'post_title'.
+*
+* You can set the dates for the attachment manually by setting the 'post_date'
+* and 'post_date_gmt' keys' values.
+*
+* By default, the comments will use the default settings for whether the
+* comments are allowed. You can close them manually or keep them open by
+* setting the value for the 'comment_status' key.
+*
+* The $object parameter can have the following:
+*     'post_status'   - Default is 'draft'. Can not be overridden, set the same as parent post.
+*     'post_type'     - Default is 'post', will be set to attachment. Can not override.
+*     'post_author'   - Default is current user ID. The ID of the user, who added the attachment.
+*     'ping_status'   - Default is the value in default ping status option. Whether the attachment
+*                       can accept pings.
+*     'post_parent'   - Default is 0. Can use $parent parameter or set this for the post it belongs
+*                       to, if any.
+*     'menu_order'    - Default is 0. The order it is displayed.
+*     'to_ping'       - Whether to ping.
+*     'pinged'        - Default is empty string.
+*     'post_password' - Default is empty string. The password to access the attachment.
+*     'guid'          - Global Unique ID for referencing the attachment.
+*     'post_content_filtered' - Attachment post content filtered.
+*     'post_excerpt'  - Attachment excerpt.
+*
+* @since 2.0.0
+* @uses $wpdb
+* @uses do_action() Calls 'edit_attachment' on $post_ID if this is an update.
+* @uses do_action() Calls 'add_attachment' on $post_ID if this is not an update.
+*
+* @param string|array $object Arguments to override defaults.
+* @param string $file Optional filename.
+* @param int $parent Parent post ID.
+* @return int Attachment ID.
+*/
+function wp_insert_attachment($object, $file = false, $parent = 0) {
+	global $wpdb;
+	$user_id = get_current_user_id();
+	$defaults = array('post_status' => 'inherit', 'post_type' => 'post', 'post_author' => $user_id,
+		'ping_status' => get_option('default_ping_status'), 'post_parent' => 0, 'post_title' => '',
+		'menu_order' => 0, 'to_ping' =>  '', 'pinged' => '', 'post_password' => '', 'post_content' => '',
+		'guid' => '', 'post_content_filtered' => '', 'post_excerpt' => '', 'import_id' => 0, 'context' => '');
+	$object = wp_parse_args($object, $defaults);
+	if ( !empty($parent) )
+		$object['post_parent'] = $parent;
+	unset( $object[ 'filter' ] );
+	$object = sanitize_post($object, 'db');
+	// export array as variables
+	extract($object, EXTR_SKIP);
+	if ( empty($post_author) )
+		$post_author = $user_id;
+	$post_type = 'attachment';
+	if ( ! in_array( $post_status, array( 'inherit', 'private' ) ) )
+		$post_status = 'inherit';
+	if ( !empty($post_category) )
+		$post_category = array_filter($post_category); // Filter out empty terms
+	// Make sure we set a valid category.
+	if ( empty($post_category) || 0 == count($post_category) || !is_array($post_category) ) {
+		$post_category = array();
+	}
+	// Are we updating or creating?
+	if ( !empty($ID) ) {
+		$update = true;
+		$post_ID = (int) $ID;
+	} else {
+		$update = false;
+		$post_ID = 0;
+	}
+	// Create a valid post name.
+	if ( empty($post_name) )
+		$post_name = sanitize_title($post_title);
+	else
+		$post_name = sanitize_title($post_name);
+	// expected_slashed ($post_name)
+	$post_name = wp_unique_post_slug($post_name, $post_ID, $post_status, $post_type, $post_parent);
+	if ( empty($post_date) )
+		$post_date = current_time('mysql');
+	if ( empty($post_date_gmt) )
+		$post_date_gmt = current_time('mysql', 1);
+	if ( empty($post_modified) )
+		$post_modified = $post_date;
+	if ( empty($post_modified_gmt) )
+		$post_modified_gmt = $post_date_gmt;
+	if ( empty($comment_status) ) {
+		if ( $update )
+			$comment_status = 'closed';
+		else
+			$comment_status = get_option('default_comment_status');
+	}
+	if ( empty($ping_status) )
+		$ping_status = get_option('default_ping_status');
+	if ( isset($to_ping) )
+		$to_ping = preg_replace('|\s+|', "\n", $to_ping);
+	else
+		$to_ping = '';
+	if ( isset($post_parent) )
+		$post_parent = (int) $post_parent;
+	else
+		$post_parent = 0;
+	if ( isset($menu_order) )
+		$menu_order = (int) $menu_order;
+	else
+		$menu_order = 0;
+	if ( !isset($post_password) )
+		$post_password = '';
+	if ( ! isset($pinged) )
+		$pinged = '';
+	// expected_slashed (everything!)
+	$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' ) );
+	$data = wp_unslash( $data );
+	if ( $update ) {
+		$wpdb->update( $wpdb->posts, $data, array( 'ID' => $post_ID ) );
+	} else {
+		// If there is a suggested ID, use it if not already present
+		if ( !empty($import_id) ) {
+			$import_id = (int) $import_id;
+			if ( ! $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id) ) ) {
+				$data['ID'] = $import_id;
+			}
+		}
+		$wpdb->insert( $wpdb->posts, $data );
+		$post_ID = (int) $wpdb->insert_id;
+	}
+	if ( empty($post_name) ) {
+		$post_name = sanitize_title($post_title, $post_ID);
+		$wpdb->update( $wpdb->posts, compact("post_name"), array( 'ID' => $post_ID ) );
+	}
+	if ( is_object_in_taxonomy($post_type, 'category') )
+		wp_set_post_categories( $post_ID, $post_category );
+	if ( isset( $tags_input ) && is_object_in_taxonomy($post_type, 'post_tag') )
+		wp_set_post_tags( $post_ID, $tags_input );
+	// support for all custom taxonomies
+	if ( !empty($tax_input) ) {
+		foreach ( $tax_input as $taxonomy => $tags ) {
+			$taxonomy_obj = get_taxonomy($taxonomy);
+			if ( is_array($tags) ) // array = hierarchical, string = non-hierarchical.
+				$tags = array_filter($tags);
+			if ( current_user_can($taxonomy_obj->cap->assign_terms) )
+				wp_set_post_terms( $post_ID, $tags, $taxonomy );
+		}
+	}
+	if ( $file )
+		update_attached_file( $post_ID, $file );
+	clean_post_cache( $post_ID );
+	if ( ! empty( $context ) )
+		add_post_meta( $post_ID, '_wp_attachment_context', $context, true );
+	if ( $update) {
+		do_action('edit_attachment', $post_ID);
+	} else {
+		do_action('add_attachment', $post_ID);
+	}
+	return $post_ID;
+}
+/**
+* Trashes or deletes an attachment.
+*
+* When an attachment is permanently deleted, the file will also be removed.
+* Deletion removes all post meta fields, taxonomy, comments, etc. associated
+* with the attachment (except the main post).
+*
+* The attachment is moved to the trash instead of permanently deleted unless trash
+* for media is disabled, item is already in the trash, or $force_delete is true.
+*
+* @since 2.0.0
+* @uses $wpdb
+* @uses do_action() Calls 'delete_attachment' hook on Attachment ID.
+*
+* @param int $post_id Attachment ID.
+* @param bool $force_delete Whether to bypass trash and force deletion. Defaults to false.
+* @return mixed False on failure. Post data on success.
+*/
+function wp_delete_attachment( $post_id, $force_delete = false ) {
+	global $wpdb;
+	if ( !$post = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id) ) )
+		return $post;
+	if ( 'attachment' != $post->post_type )
+		return false;
+	if ( !$force_delete && EMPTY_TRASH_DAYS && MEDIA_TRASH && 'trash' != $post->post_status )
+		return wp_trash_post( $post_id );
+	delete_post_meta($post_id, '_wp_trash_meta_status');
+	delete_post_meta($post_id, '_wp_trash_meta_time');
+	$meta = wp_get_attachment_metadata( $post_id );
+	$backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true );
+	$file = get_attached_file( $post_id );
+	$intermediate_sizes = array();
+	foreach ( get_intermediate_image_sizes() as $size ) {
+		if ( $intermediate = image_get_intermediate_size( $post_id, $size ) )
+			$intermediate_sizes[] = $intermediate;
+	}
+	if ( is_multisite() )
+		delete_transient( 'dirsize_cache' );
+	do_action('delete_attachment', $post_id);
+	wp_delete_object_term_relationships($post_id, array('category', 'post_tag'));
+	wp_delete_object_term_relationships($post_id, get_object_taxonomies($post->post_type));
+	delete_metadata( 'post', null, '_thumbnail_id', $post_id, true ); // delete all for any posts.
+	$comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ));
+	foreach ( $comment_ids as $comment_id )
+		wp_delete_comment( $comment_id, true );
+	$post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id ));
+	foreach ( $post_meta_ids as $mid )
+		delete_metadata_by_mid( 'post', $mid );
+	do_action( 'delete_post', $post_id );
+	$wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
+	do_action( 'deleted_post', $post_id );
+	$uploadpath = wp_upload_dir();
+	if ( ! empty($meta['thumb']) ) {
+		// Don't delete the thumb if another attachment uses it
+		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)) ) {
+			$thumbfile = str_replace(basename($file), $meta['thumb'], $file);
+			/** This filter is documented in wp-admin/custom-header.php */
+			$thumbfile = apply_filters('wp_delete_file', $thumbfile);
+			@ unlink( path_join($uploadpath['basedir'], $thumbfile) );
+		}
+	}
+	// remove intermediate and backup images if there are any
+	foreach ( $intermediate_sizes as $intermediate ) {
+		/** This filter is documented in wp-admin/custom-header.php */
+		$intermediate_file = apply_filters( 'wp_delete_file', $intermediate['path'] );
+		@ unlink( path_join($uploadpath['basedir'], $intermediate_file) );
+	}
+	if ( is_array($backup_sizes) ) {
+		foreach ( $backup_sizes as $size ) {
+			$del_file = path_join( dirname($meta['file']), $size['file'] );
+			/** This filter is documented in wp-admin/custom-header.php */
+			$del_file = apply_filters('wp_delete_file', $del_file);
+			@ unlink( path_join($uploadpath['basedir'], $del_file) );
+		}
+	}
+	/** This filter is documented in wp-admin/custom-header.php */
+	$file = apply_filters('wp_delete_file', $file);
+	if ( ! empty($file) )
+		@ unlink($file);
+	clean_post_cache( $post );
+	return $post;
+}
+/**
+* Retrieve attachment meta field for attachment ID.
+*
+* @since 2.1.0
+*
+* @param int $post_id Attachment ID
+* @param bool $unfiltered Optional, default is false. If true, filters are not run.
+* @return string|bool Attachment meta field. False on failure.
+*/
+function wp_get_attachment_metadata( $post_id = 0, $unfiltered = false ) {
+	$post_id = (int) $post_id;
+	if ( !$post = get_post( $post_id ) )
+		return false;
+	$data = get_post_meta( $post->ID, '_wp_attachment_metadata', true );
+	if ( $unfiltered )
+		return $data;
+	return apply_filters( 'wp_get_attachment_metadata', $data, $post->ID );
+}
+/**
+* Update metadata for an attachment.
+*
+* @since 2.1.0
+*
+* @param int $post_id Attachment ID.
+* @param array $data Attachment data.
+* @return int
+*/
+function wp_update_attachment_metadata( $post_id, $data ) {
+	$post_id = (int) $post_id;
+	if ( !$post = get_post( $post_id ) )
+		return false;
+	if ( $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID ) )
+		return update_post_meta( $post->ID, '_wp_attachment_metadata', $data );
+	else
+		return delete_post_meta( $post->ID, '_wp_attachment_metadata' );
+}
+/**
+* Retrieve the URL for an attachment.
+*
+* @since 2.1.0
+*
+* @param int $post_id Attachment ID.
+* @return string
+*/
+function wp_get_attachment_url( $post_id = 0 ) {
+	$post_id = (int) $post_id;
+	if ( !$post = get_post( $post_id ) )
+		return false;
+	if ( 'attachment' != $post->post_type )
+		return false;
+	$url = '';
+	if ( $file = get_post_meta( $post->ID, '_wp_attached_file', true) ) { //Get attached file
+		if ( ($uploads = wp_upload_dir()) && false === $uploads['error'] ) { //Get upload directory
+			if ( 0 === strpos($file, $uploads['basedir']) ) //Check that the upload base exists in the file location
+				$url = str_replace($uploads['basedir'], $uploads['baseurl'], $file); //replace file location with url location
+			elseif ( false !== strpos($file, 'wp-content/uploads') )
+				$url = $uploads['baseurl'] . substr( $file, strpos($file, 'wp-content/uploads') + 18 );
+			else
+				$url = $uploads['baseurl'] . "/$file"; //Its a newly uploaded file, therefor $file is relative to the basedir.
+		}
+	}
+	if ( empty($url) ) //If any of the above options failed, Fallback on the GUID as used pre-2.7, not recommended to rely upon this.
+		$url = get_the_guid( $post->ID );
+	$url = apply_filters( 'wp_get_attachment_url', $url, $post->ID );
+	if ( empty( $url ) )
+		return false;
+	return $url;
+}
+/**
+* Retrieve thumbnail for an attachment.
+*
+* @since 2.1.0
+*
+* @param int $post_id Attachment ID.
+* @return mixed False on failure. Thumbnail file path on success.
+*/
+function wp_get_attachment_thumb_file( $post_id = 0 ) {
+	$post_id = (int) $post_id;
+	if ( !$post = get_post( $post_id ) )
+		return false;
+	if ( !is_array( $imagedata = wp_get_attachment_metadata( $post->ID ) ) )
+		return false;
+	$file = get_attached_file( $post->ID );
+	if ( !empty($imagedata['thumb']) && ($thumbfile = str_replace(basename($file), $imagedata['thumb'], $file)) && file_exists($thumbfile) )
+		return apply_filters( 'wp_get_attachment_thumb_file', $thumbfile, $post->ID );
+	return false;
+}
+/**
+* Retrieve URL for an attachment thumbnail.
+*
+* @since 2.1.0
+*
+* @param int $post_id Attachment ID
+* @return string|bool False on failure. Thumbnail URL on success.
+*/
+function wp_get_attachment_thumb_url( $post_id = 0 ) {
+	$post_id = (int) $post_id;
+	if ( !$post = get_post( $post_id ) )
+		return false;
+	if ( !$url = wp_get_attachment_url( $post->ID ) )
+		return false;
+	$sized = image_downsize( $post_id, 'thumbnail' );
+	if ( $sized )
+		return $sized[0];
+	if ( !$thumb = wp_get_attachment_thumb_file( $post->ID ) )
+		return false;
+	$url = str_replace(basename($url), basename($thumb), $url);
+	return apply_filters( 'wp_get_attachment_thumb_url', $url, $post->ID );
+}
+/**
+* Check if the attachment is an image.
+*
+* @since 2.1.0
+*
+* @param int $post_id Attachment ID
+* @return bool
+*/
+function wp_attachment_is_image( $post_id = 0 ) {
+	$post_id = (int) $post_id;
+	if ( !$post = get_post( $post_id ) )
+		return false;
+	if ( !$file = get_attached_file( $post->ID ) )
+		return false;
+	$ext = preg_match('/\.([^.]+)$/', $file, $matches) ? strtolower($matches[1]) : false;
+	$image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png' );
+	if ( 'image/' == substr($post->post_mime_type, 0, 6) || $ext && 'import' == $post->post_mime_type && in_array($ext, $image_exts) )
+		return true;
+	return false;
+}
+/**
+* Retrieve the icon for a MIME type.
+*
+* @since 2.1.0
+*
+* @param string|int $mime MIME type or attachment ID.
+* @return string|bool
+*/
+function wp_mime_type_icon( $mime = 0 ) {
+	if ( !is_numeric($mime) )
+		$icon = wp_cache_get("mime_type_icon_$mime");
+	$post_id = 0;
+	if ( empty($icon) ) {
+		$post_mimes = array();
+		if ( is_numeric($mime) ) {
+			$mime = (int) $mime;
+			if ( $post = get_post( $mime ) ) {
+				$post_id = (int) $post->ID;
+				$ext = preg_replace('/^.+?\.([^.]+)$/', '$1', $post->guid);
+				if ( !empty($ext) ) {
+					$post_mimes[] = $ext;
+					if ( $ext_type = wp_ext2type( $ext ) )
+						$post_mimes[] = $ext_type;
+				}
+				$mime = $post->post_mime_type;
+			} else {
+				$mime = 0;
+			}
+		} else {
+			$post_mimes[] = $mime;
+		}
+		$icon_files = wp_cache_get('icon_files');
+		if ( !is_array($icon_files) ) {
+			$icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/crystal' );
+			$icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url('images/crystal') );
+			$dirs = apply_filters( 'icon_dirs', array($icon_dir => $icon_dir_uri) );
+			$icon_files = array();
+			while ( $dirs ) {
+				$keys = array_keys( $dirs );
+				$dir = array_shift( $keys );
+				$uri = array_shift($dirs);
+				if ( $dh = opendir($dir) ) {
+					while ( false !== $file = readdir($dh) ) {
+						$file = basename($file);
+						if ( substr($file, 0, 1) == '.' )
+							continue;
+						if ( !in_array(strtolower(substr($file, -4)), array('.png', '.gif', '.jpg') ) ) {
+							if ( is_dir("$dir/$file") )
+								$dirs["$dir/$file"] = "$uri/$file";
+							continue;
+						}
+						$icon_files["$dir/$file"] = "$uri/$file";
+					}
+					closedir($dh);
+				}
+			}
+			wp_cache_add( 'icon_files', $icon_files, 'default', 600 );
+		}
+		// Icon basename - extension = MIME wildcard
+		foreach ( $icon_files as $file => $uri )
+			$types[ preg_replace('/^([^.]*).*$/', '$1', basename($file)) ] =& $icon_files[$file];
+		if ( ! empty($mime) ) {
+			$post_mimes[] = substr($mime, 0, strpos($mime, '/'));
+			$post_mimes[] = substr($mime, strpos($mime, '/') + 1);
+			$post_mimes[] = str_replace('/', '_', $mime);
+		}
+		$matches = wp_match_mime_types(array_keys($types), $post_mimes);
+		$matches['default'] = array('default');
+		foreach ( $matches as $match => $wilds ) {
+			if ( isset($types[$wilds[0]])) {
+				$icon = $types[$wilds[0]];
+				if ( !is_numeric($mime) )
+					wp_cache_add("mime_type_icon_$mime", $icon);
+				break;
+			}
+		}
+	}
+	return apply_filters( 'wp_mime_type_icon', $icon, $mime, $post_id ); // Last arg is 0 if function pass mime type.
+}
+/**
+* Checked for changed slugs for published post objects and save the old slug.
+*
+* The function is used when a post object of any type is updated,
+* by comparing the current and previous post objects.
+*
+* If the slug was changed and not already part of the old slugs then it will be
+* added to the post meta field ('_wp_old_slug') for storing old slugs for that
+* post.
+*
+* The most logically usage of this function is redirecting changed post objects, so
+* that those that linked to an changed post will be redirected to the new post.
+*
+* @since 2.1.0
+*
+* @param int $post_id Post ID.
+* @param object $post The Post Object
+* @param object $post_before The Previous Post Object
+* @return int Same as $post_id
+*/
+function wp_check_for_changed_slugs($post_id, $post, $post_before) {
+	// dont bother if it hasnt changed
+	if ( $post->post_name == $post_before->post_name )
+		return;
+	// we're only concerned with published, non-hierarchical objects
+	if ( $post->post_status != 'publish' || is_post_type_hierarchical( $post->post_type ) )
+		return;
+	$old_slugs = (array) get_post_meta($post_id, '_wp_old_slug');
+	// if we haven't added this old slug before, add it now
+	if ( !empty( $post_before->post_name ) && !in_array($post_before->post_name, $old_slugs) )
+		add_post_meta($post_id, '_wp_old_slug', $post_before->post_name);
+	// if the new slug was used previously, delete it from the list
+	if ( in_array($post->post_name, $old_slugs) )
+		delete_post_meta($post_id, '_wp_old_slug', $post->post_name);
+}
+/**
+* Retrieve the private post SQL based on capability.
+*
+* This function provides a standardized way to appropriately select on the
+* post_status of a post type. The function will return a piece of SQL code
+* that can be added to a WHERE clause; this SQL is constructed to allow all
+* published posts, and all private posts to which the user has access.
+*
+* @since 2.2.0
+*
+* @param string $post_type currently only supports 'post' or 'page'.
+* @return string SQL code that can be added to a where clause.
+*/
+function get_private_posts_cap_sql( $post_type ) {
+	return get_posts_by_author_sql( $post_type, false );
+}
+/**
+* Retrieve the post SQL based on capability, author, and type.
+*
+* @see get_private_posts_cap_sql() for full description.
+*
+* @since 3.0.0
+* @param string $post_type Post type.
+* @param bool $full Optional. Returns a full WHERE statement instead of just an 'andalso' term.
+* @param int $post_author Optional. Query posts having a single author ID.
+* @param bool $public_only Optional. Only return public posts. Skips cap checks for $current_user.  Default is false.
+* @return string SQL WHERE code that can be added to a query.
+*/
+function get_posts_by_author_sql( $post_type, $full = true, $post_author = null, $public_only = false ) {
+	global $wpdb;
+	// Private posts
+	$post_type_obj = get_post_type_object( $post_type );
+	if ( ! $post_type_obj )
+		return $full ? 'WHERE 1 = 0' : ' 1 = 0 ';
+	// This hook is deprecated. Why you'd want to use it, I dunno.
+	if ( ! $cap = apply_filters( 'pub_priv_sql_capability', '' ) )
+		$cap = $post_type_obj->cap->read_private_posts;
+	if ( $full ) {
+		if ( null === $post_author ) {
+			$sql = $wpdb->prepare( 'WHERE post_type = %s AND ', $post_type );
+		} else {
+			$sql = $wpdb->prepare( 'WHERE post_author = %d AND post_type = %s AND ', $post_author, $post_type );
+		}
+	} else {
+		$sql = '';
+	}
+	$sql .= "(post_status = 'publish'";
+	// Only need to check the cap if $public_only is false
+	if ( false === $public_only ) {
+		if ( current_user_can( $cap ) ) {
+			// Does the user have the capability to view private posts? Guess so.
+			$sql .= " OR post_status = 'private'";
+		} elseif ( is_user_logged_in() ) {
+			// Users can view their own private posts.
+			$id = get_current_user_id();
+			if ( null === $post_author || ! $full ) {
+				$sql .= " OR post_status = 'private' AND post_author = $id";
+			} elseif ( $id == (int) $post_author ) {
+				$sql .= " OR post_status = 'private'";
+			} // else none
+		} // else none
+	}
+	$sql .= ')';
+	return $sql;
+}
+/**
+* Retrieve the date that the last post was published.
+*
+* The server timezone is the default and is the difference between GMT and
+* server time. The 'blog' value is the date when the last post was posted. The
+* 'gmt' is when the last post was posted in GMT formatted date.
+*
+* @since 0.71
+*
+* @uses apply_filters() Calls 'get_lastpostdate' filter
+*
+* @param string $timezone The location to get the time. Can be 'gmt', 'blog', or 'server'.
+* @return string The date of the last post.
+*/
+function get_lastpostdate($timezone = 'server') {
+	return apply_filters( 'get_lastpostdate', _get_last_post_time( $timezone, 'date' ), $timezone );
+}
+/**
+* Retrieve last post modified date depending on timezone.
+*
+* The server timezone is the default and is the difference between GMT and
+* server time. The 'blog' value is just when the last post was modified. The
+* 'gmt' is when the last post was modified in GMT time.
+*
+* @since 1.2.0
+* @uses apply_filters() Calls 'get_lastpostmodified' filter
+*
+* @param string $timezone The location to get the time. Can be 'gmt', 'blog', or 'server'.
+* @return string The date the post was last modified.
+*/
+function get_lastpostmodified($timezone = 'server') {
+	$lastpostmodified = _get_last_post_time( $timezone, 'modified' );
+	$lastpostdate = get_lastpostdate($timezone);
+	if ( $lastpostdate > $lastpostmodified )
+		$lastpostmodified = $lastpostdate;
+	return apply_filters( 'get_lastpostmodified', $lastpostmodified, $timezone );
+}
+/**
+* Retrieve latest post date data based on timezone.
+*
+* @access private
+* @since 3.1.0
+*
+* @param string $timezone The location to get the time. Can be 'gmt', 'blog', or 'server'.
+* @param string $field Field to check. Can be 'date' or 'modified'.
+* @return string The date.
+*/
+function _get_last_post_time( $timezone, $field ) {
+	global $wpdb;
+	if ( !in_array( $field, array( 'date', 'modified' ) ) )
+		return false;
+	$timezone = strtolower( $timezone );
+	$key = "lastpost{$field}:$timezone";
+	$date = wp_cache_get( $key, 'timeinfo' );
+	if ( !$date ) {
+		$add_seconds_server = date('Z');
+		$post_types = get_post_types( array( 'public' => true ) );
+		array_walk( $post_types, array( &$wpdb, 'escape_by_ref' ) );
+		$post_types = "'" . implode( "', '", $post_types ) . "'";
+		switch ( $timezone ) {
+			case 'gmt':
+				$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");
+				break;
+			case 'blog':
+				$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");
+				break;
+			case 'server':
+				$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");
+				break;
+		}
+		if ( $date )
+			wp_cache_set( $key, $date, 'timeinfo' );
+	}
+	return $date;
+}
+/**
+* Updates posts in cache.
+*
+* @package WordPress
+* @subpackage Cache
+* @since 1.5.1
+*
+* @param array $posts Array of post objects
+*/
+function update_post_cache( &$posts ) {
+	if ( ! $posts )
+		return;
+	foreach ( $posts as $post )
+		wp_cache_add( $post->ID, $post, 'posts' );
+}
+/**
+* Will clean the post in the cache.
+*
+* Cleaning means delete from the cache of the post. Will call to clean the term
+* object cache associated with the post ID.
+*
+* This function not run if $_wp_suspend_cache_invalidation is not empty. See
+* wp_suspend_cache_invalidation().
+*
+* @package WordPress
+* @subpackage Cache
+* @since 2.0.0
+*
+* @uses do_action() Calls 'clean_post_cache' on $id before adding children (if any).
+*
+* @param int|object $post Post ID or object to remove from the cache
+*/
+function clean_post_cache( $post ) {
+	global $_wp_suspend_cache_invalidation, $wpdb;
+	if ( ! empty( $_wp_suspend_cache_invalidation ) )
+		return;
+	$post = get_post( $post );
+	if ( empty( $post ) )
+		return;
+	wp_cache_delete( $post->ID, 'posts' );
+	wp_cache_delete( $post->ID, 'post_meta' );
+	clean_object_term_cache( $post->ID, $post->post_type );
+	wp_cache_delete( 'wp_get_archives', 'general' );
+	do_action( 'clean_post_cache', $post->ID, $post );
+	if ( is_post_type_hierarchical( $post->post_type ) )
+		wp_cache_delete( 'get_pages', 'posts' );
+	if ( 'page' == $post->post_type ) {
+		wp_cache_delete( 'all_page_ids', 'posts' );
+		do_action( 'clean_page_cache', $post->ID );
+	}
+	wp_cache_set( 'last_changed', microtime(), 'posts' );
+}
+/**
+* Call major cache updating functions for list of Post objects.
+*
+* @package WordPress
+* @subpackage Cache
+* @since 1.5.0
+*
+* @uses update_post_cache()
+* @uses update_object_term_cache()
+* @uses update_postmeta_cache()
+*
+* @param array $posts Array of Post objects
+* @param string $post_type The post type of the posts in $posts. Default is 'post'.
+* @param bool $update_term_cache Whether to update the term cache. Default is true.
+* @param bool $update_meta_cache Whether to update the meta cache. Default is true.
+*/
+function update_post_caches(&$posts, $post_type = 'post', $update_term_cache = true, $update_meta_cache = true) {
+	// No point in doing all this work if we didn't match any posts.
+	if ( !$posts )
+		return;
+	update_post_cache($posts);
+	$post_ids = array();
+	foreach ( $posts as $post )
+		$post_ids[] = $post->ID;
+	if ( ! $post_type )
+		$post_type = 'any';
+	if ( $update_term_cache ) {
+		if ( is_array($post_type) ) {
+			$ptypes = $post_type;
+		} elseif ( 'any' == $post_type ) {
+			// Just use the post_types in the supplied posts.
+			foreach ( $posts as $post )
+				$ptypes[] = $post->post_type;
+			$ptypes = array_unique($ptypes);
+		} else {
+			$ptypes = array($post_type);
+		}
+		if ( ! empty($ptypes) )
+			update_object_term_cache($post_ids, $ptypes);
+	}
+	if ( $update_meta_cache )
+		update_postmeta_cache($post_ids);
+}
+/**
+* Updates metadata cache for list of post IDs.
+*
+* Performs SQL query to retrieve the metadata for the post IDs and updates the
+* metadata cache for the posts. Therefore, the functions, which call this
+* function, do not need to perform SQL queries on their own.
+*
+* @package WordPress
+* @subpackage Cache
+* @since 2.1.0
+*
+* @param array $post_ids List of post IDs.
+* @return bool|array Returns false if there is nothing to update or an array of metadata.
+*/
+function update_postmeta_cache($post_ids) {
+	return update_meta_cache('post', $post_ids);
+}
+/**
+* Will clean the attachment in the cache.
+*
+* Cleaning means delete from the cache. Optionally will clean the term
+* object cache associated with the attachment ID.
+*
+* This function will not run if $_wp_suspend_cache_invalidation is not empty. See
+* wp_suspend_cache_invalidation().
+*
+* @package WordPress
+* @subpackage Cache
+* @since 3.0.0
+*
+* @uses do_action() Calls 'clean_attachment_cache' on $id.
+*
+* @param int $id The attachment ID in the cache to clean
+* @param bool $clean_terms optional. Whether to clean terms cache
+*/
+function clean_attachment_cache($id, $clean_terms = false) {
+	global $_wp_suspend_cache_invalidation;
+	if ( !empty($_wp_suspend_cache_invalidation) )
+		return;
+	$id = (int) $id;
+	wp_cache_delete($id, 'posts');
+	wp_cache_delete($id, 'post_meta');
+	if ( $clean_terms )
+		clean_object_term_cache($id, 'attachment');
+	do_action('clean_attachment_cache', $id);
+}
+//
+// Hooks
+//
+/**
+* Hook for managing future post transitions to published.
+*
+* @since 2.3.0
+* @access private
+* @uses $wpdb
+* @uses do_action() Calls 'private_to_published' on post ID if this is a 'private_to_published' call.
+* @uses wp_clear_scheduled_hook() with 'publish_future_post' and post ID.
+*
+* @param string $new_status New post status
+* @param string $old_status Previous post status
+* @param object $post Object type containing the post information
+*/
+function _transition_post_status($new_status, $old_status, $post) {
+	global $wpdb;
+	if ( $old_status != 'publish' && $new_status == 'publish' ) {
+		// Reset GUID if transitioning to publish and it is empty
+		if ( '' == get_the_guid($post->ID) )
+			$wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) );
+		do_action('private_to_published', $post->ID);  // Deprecated, use private_to_publish
+	}
+	// If published posts changed clear the lastpostmodified cache
+	if ( 'publish' == $new_status || 'publish' == $old_status) {
+		foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
+			wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' );
+			wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' );
+		}
+	}
+	// Always clears the hook in case the post status bounced from future to draft.
+	wp_clear_scheduled_hook('publish_future_post', array( $post->ID ) );
+}
+/**
+* Hook used to schedule publication for a post marked for the future.
+*
+* The $post properties used and must exist are 'ID' and 'post_date_gmt'.
+*
+* @since 2.3.0
+* @access private
+*
+* @param int $deprecated Not used. Can be set to null. Never implemented.
+*   Not marked as deprecated with _deprecated_argument() as it conflicts with
+*   wp_transition_post_status() and the default filter for _future_post_hook().
+* @param object $post Object type containing the post information
+*/
+function _future_post_hook( $deprecated, $post ) {
+	wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
+	wp_schedule_single_event( strtotime( get_gmt_from_date( $post->post_date ) . ' GMT') , 'publish_future_post', array( $post->ID ) );
+}
+/**
+* Hook to schedule pings and enclosures when a post is published.
+*
+* @since 2.3.0
+* @access private
+* @uses XMLRPC_REQUEST and WP_IMPORTING constants.
+* @uses do_action() Calls 'xmlrpc_publish_post' on post ID if XMLRPC_REQUEST is defined.
+*
+* @param int $post_id The ID in the database table of the post being published
+*/
+function _publish_post_hook($post_id) {
+	if ( defined('XMLRPC_REQUEST') )
+		do_action('xmlrpc_publish_post', $post_id);
+	if ( defined('WP_IMPORTING') )
+		return;
+	if ( get_option('default_pingback_flag') )
+		add_post_meta( $post_id, '_pingme', '1' );
+	add_post_meta( $post_id, '_encloseme', '1' );
+	wp_schedule_single_event(time(), 'do_pings');
+}
+/**
+* Returns the post's parent's post_ID
+*
+* @since 3.1.0
+*
+* @param int $post_id
+*
+* @return int|bool false on error
+*/
+function wp_get_post_parent_id( $post_ID ) {
+	$post = get_post( $post_ID );
+	if ( !$post || is_wp_error( $post ) )
+		return false;
+	return (int) $post->post_parent;
+}
+/**
+* Checks the given subset of the post hierarchy for hierarchy loops.
+* Prevents loops from forming and breaks those that it finds.
+*
+* Attached to the wp_insert_post_parent filter.
+*
+* @since 3.1.0
+* @uses wp_find_hierarchy_loop()
+*
+* @param int $post_parent ID of the parent for the post we're checking.
+* @param int $post_ID ID of the post we're checking.
+*
+* @return int The new post_parent for the post.
+*/
+function wp_check_post_hierarchy_for_loops( $post_parent, $post_ID ) {
+	// Nothing fancy here - bail
+	if ( !$post_parent )
+		return 0;
+	// New post can't cause a loop
+	if ( empty( $post_ID ) )
+		return $post_parent;
+	// Can't be its own parent
+	if ( $post_parent == $post_ID )
+		return 0;
+	// Now look for larger loops
+	if ( !$loop = wp_find_hierarchy_loop( 'wp_get_post_parent_id', $post_ID, $post_parent ) )
+		return $post_parent; // No loop
+	// Setting $post_parent to the given value causes a loop
+	if ( isset( $loop[$post_ID] ) )
+		return 0;
+	// There's a loop, but it doesn't contain $post_ID. Break the loop.
+	foreach ( array_keys( $loop ) as $loop_member )
+		wp_update_post( array( 'ID' => $loop_member, 'post_parent' => 0 ) );
+	return $post_parent;
+}
+/**
+* Sets a post thumbnail.
+*
+* @since 3.1.0
+*
+* @param int|object $post Post ID or object where thumbnail should be attached.
+* @param int $thumbnail_id Thumbnail to attach.
+* @return bool True on success, false on failure.
+*/
+function set_post_thumbnail( $post, $thumbnail_id ) {
+	$post = get_post( $post );
+	$thumbnail_id = absint( $thumbnail_id );
+	if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
+		if ( $thumbnail_html = wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) )
+			return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
+		else
+			return delete_post_meta( $post->ID, '_thumbnail_id' );
+	}
+	return false;
+}
+/**
+* Removes a post thumbnail.
+*
+* @since 3.3.0
+*
+* @param int|object $post Post ID or object where thumbnail should be removed from.
+* @return bool True on success, false on failure.
+*/
+function delete_post_thumbnail( $post ) {
+	$post = get_post( $post );
+	if ( $post )
+		return delete_post_meta( $post->ID, '_thumbnail_id' );
+	return false;
+}
+/**
+* Deletes auto-drafts for new posts that are > 7 days old
+*
+* @since 3.4.0
+*/
+function wp_delete_auto_drafts() {
+	global $wpdb;
+	// Cleanup old auto-drafts more than 7 days old
+	$old_posts = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date" );
+	foreach ( (array) $old_posts as $delete )
+		wp_delete_post( $delete, true ); // Force delete
+}
+/**
+* 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.
+*
+* @access private
+* @param string $new_status
+* @param string $old_status
+* @param object $post
+* @since 3.3.0
+*/
+function _update_term_count_on_transition_post_status( $new_status, $old_status, $post ) {
+	// Update counts for the post's terms.
+	foreach ( (array) get_object_taxonomies( $post->post_type ) as $taxonomy ) {
+		$tt_ids = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'tt_ids' ) );
+		wp_update_term_count( $tt_ids, $taxonomy );
+	}
+}
+/**
+* Adds any posts from the given ids to the cache that do not already exist in cache
+*
+* @since 3.4.0
+*
+* @access private
+*
+* @param array $post_ids ID list
+* @param bool $update_term_cache Whether to update the term cache. Default is true.
+* @param bool $update_meta_cache Whether to update the meta cache. Default is true.
+*/
+function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) {
+	global $wpdb;
+	$non_cached_ids = _get_non_cached_ids( $ids, 'posts' );
+	if ( !empty( $non_cached_ids ) ) {
+		$fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", join( ",", $non_cached_ids ) ) );
+		update_post_caches( $fresh_posts, 'any', $update_term_cache, $update_meta_cache );
+	}
+}

changeset 0	d970ebf37754
child 5	5e2f62d02dcd