(int) $GLOBALS['post']->post_parent ); } else { return false; } } 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 ) { $kids = false; return $kids; } update_post_cache($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 (). * * 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' and 'extended' keys. Main has the text before * the . The 'extended' key has the content after the * comment. * * @since 1.0.0 * * @param string $post Post content. * @return array Post before ('main') and after ('extended'). */ function get_extended($post) { //Match the new style more links if ( preg_match('//', $post, $matches) ) { list($main, $extended) = explode($matches[0], $post, 2); } else { $main = $post; $extended = ''; } // Strip leading and trailing whitespace $main = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $main); $extended = preg_replace('/^[\s]*(.*)[\s]*$/', '\\1', $extended); return array('main' => $main, 'extended' => $extended); } /** * 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 * @uses $wpdb * @link http://codex.wordpress.org/Function_Reference/get_post * * @param int|object $post Post ID or post object. * @param string $output Optional, default is Object. Either OBJECT, ARRAY_A, or ARRAY_N. * @param string $filter Optional, default is raw. * @return mixed Post data */ function &get_post(&$post, $output = OBJECT, $filter = 'raw') { global $wpdb; $null = null; if ( empty($post) ) { if ( isset($GLOBALS['post']) ) $_post = & $GLOBALS['post']; else return $null; } elseif ( is_object($post) ) { _get_post_ancestors($post); wp_cache_add($post->ID, $post, 'posts'); $_post = &$post; } else { $post = (int) $post; if ( ! $_post = wp_cache_get($post, 'posts') ) { $_post = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d LIMIT 1", $post)); if ( ! $_post ) return $null; _get_post_ancestors($_post); wp_cache_add($_post->ID, $_post, 'posts'); } } $_post = sanitize_post($_post, $filter); if ( $output == OBJECT ) { return $_post; } elseif ( $output == ARRAY_A ) { $__post = get_object_vars($_post); return $__post; } elseif ( $output == ARRAY_N ) { $__post = array_values(get_object_vars($_post)); return $__post; } else { 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 ( !empty($post->ancestors) ) return $post->ancestors; return array(); } /** * Retrieve data from a post field based on Post ID. * * Examples of the post field will be, 'post_type', 'post_status', '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 id $post Post ID * @param string $context Optional. How to filter the field. Default is display. * @return WP_Error|string Value in post field or WP_Error on failure */ function get_post_field( $field, $post, $context = 'display' ) { $post = (int) $post; $post = get_post( $post ); if ( is_wp_error($post) ) return $post; if ( !is_object($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 $ID Optional. Post ID. * @return bool|string False on failure or returns the mime type */ function get_post_mime_type($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 $ID Post ID * @return string|bool Post status or false on failure. */ function get_post_status($ID = '') { $post = get_post($ID); if ( is_object($post) ) { if ( ('attachment' == $post->post_type) && $post->post_parent && ($post->ID != $post->post_parent) ) return get_post_status($post->post_parent); else return $post->post_status; } return false; } /** * 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; } /** * Retrieve the post type of the current post or of a given post. * * @since 2.1.0 * * @uses $wpdb * @uses $posts The Loop post global * * @param mixed $post Optional. Post object or post ID. * @return bool|string post type or false on failure. */ function get_post_type($post = false) { global $posts; if ( false === $post ) $post = $posts[0]; elseif ( (int) $post ) $post = get_post($post, OBJECT); if ( is_object($post) ) return $post->post_type; return false; } /** * 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->query( $wpdb->prepare("UPDATE $wpdb->posts SET post_type = %s WHERE ID = %d", $post_type, $post_id) ); if ( 'page' == $post_type ) clean_page_cache($post_id); else 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 'published'. Post status to retrieve. * * @since 1.2.0 * @uses $wpdb * @uses WP_Query::query() See for more default arguments and information. * @link http://codex.wordpress.org/Template_Tags/get_posts * * @param array $args Optional. Override defaults. * @return array List of posts. */ function get_posts($args = null) { $defaults = array( 'numberposts' => 5, 'offset' => 0, 'category' => 0, 'orderby' => 'post_date', 'order' => 'DESC', 'include' => '', 'exclude' => '', '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']) ) $r['posts_per_page'] = $r['numberposts']; if ( ! empty($r['category']) ) $r['cat'] = $r['category']; if ( ! empty($r['include']) ) { $incposts = preg_split('/[\s,]+/',$r['include']); $r['posts_per_page'] = count($incposts); // only the number of posts included $r['post__in'] = $incposts; } elseif ( ! empty($r['exclude']) ) $r['post__not_in'] = preg_split('/[\s,]+/',$r['exclude']); $r['caller_get_posts'] = 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 Panels. * * @since 1.5.0 * @uses $wpdb * @link http://codex.wordpress.org/Function_Reference/add_post_meta * * @param int $post_id Post ID. * @param string $key Metadata name. * @param mixed $value Metadata value. * @param bool $unique Optional, default is false. Whether the same key should not be added. * @return bool False for failure. True for success. */ function add_post_meta($post_id, $meta_key, $meta_value, $unique = false) { global $wpdb; // make sure meta is added to the post, not a revision if ( $the_post = wp_is_post_revision($post_id) ) $post_id = $the_post; // expected_slashed ($meta_key) $meta_key = stripslashes($meta_key); if ( $unique && $wpdb->get_var( $wpdb->prepare( "SELECT meta_key FROM $wpdb->postmeta WHERE meta_key = %s AND post_id = %d", $meta_key, $post_id ) ) ) return false; $meta_value = maybe_serialize( stripslashes_deep($meta_value) ); $wpdb->insert( $wpdb->postmeta, compact( 'post_id', 'meta_key', 'meta_value' ) ); wp_cache_delete($post_id, 'post_meta'); return true; } /** * 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 * @uses $wpdb * @link http://codex.wordpress.org/Function_Reference/delete_post_meta * * @param int $post_id post ID * @param string $meta_key Metadata name. * @param mixed $meta_value Optional. Metadata value. * @return bool False for failure. True for success. */ function delete_post_meta($post_id, $meta_key, $meta_value = '') { global $wpdb; // make sure meta is added to the post, not a revision if ( $the_post = wp_is_post_revision($post_id) ) $post_id = $the_post; // expected_slashed ($meta_key, $meta_value) $meta_key = stripslashes( $meta_key ); $meta_value = maybe_serialize( stripslashes_deep($meta_value) ); if ( empty( $meta_value ) ) $meta_id = $wpdb->get_var( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = %s", $post_id, $meta_key ) ); else $meta_id = $wpdb->get_var( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = %s AND meta_value = %s", $post_id, $meta_key, $meta_value ) ); if ( !$meta_id ) return false; if ( empty( $meta_value ) ) $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = %s", $post_id, $meta_key ) ); else $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = %s AND meta_value = %s", $post_id, $meta_key, $meta_value ) ); wp_cache_delete($post_id, 'post_meta'); return true; } /** * Retrieve post meta field for a post. * * @since 1.5.0 * @uses $wpdb * @link http://codex.wordpress.org/Function_Reference/get_post_meta * * @param int $post_id Post ID. * @param string $key The meta key to retrieve. * @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) { $post_id = (int) $post_id; $meta_cache = wp_cache_get($post_id, 'post_meta'); if ( !$meta_cache ) { update_postmeta_cache($post_id); $meta_cache = wp_cache_get($post_id, 'post_meta'); } if ( isset($meta_cache[$key]) ) { if ( $single ) { return maybe_unserialize( $meta_cache[$key][0] ); } else { return array_map('maybe_unserialize', $meta_cache[$key]); } } return ''; } /** * 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 * @uses $wpdb * @link http://codex.wordpress.org/Function_Reference/update_post_meta * * @param int $post_id Post ID. * @param string $key Metadata key. * @param mixed $value Metadata value. * @param mixed $prev_value Optional. Previous value to check before removing. * @return bool False on failure, true if success. */ function update_post_meta($post_id, $meta_key, $meta_value, $prev_value = '') { global $wpdb; // make sure meta is added to the post, not a revision if ( $the_post = wp_is_post_revision($post_id) ) $post_id = $the_post; // expected_slashed ($meta_key) $meta_key = stripslashes($meta_key); if ( ! $wpdb->get_var( $wpdb->prepare( "SELECT meta_key FROM $wpdb->postmeta WHERE meta_key = %s AND post_id = %d", $meta_key, $post_id ) ) ) { return add_post_meta($post_id, $meta_key, $meta_value); } $meta_value = maybe_serialize( stripslashes_deep($meta_value) ); $data = compact( 'meta_value' ); $where = compact( 'meta_key', 'post_id' ); if ( !empty( $prev_value ) ) { $prev_value = maybe_serialize($prev_value); $where['meta_value'] = $prev_value; } $wpdb->update( $wpdb->postmeta, $data, $where ); wp_cache_delete($post_id, 'post_meta'); return true; } /** * Delete everything from post meta matching meta key. * * @since 2.3.0 * @uses $wpdb * * @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) { global $wpdb; if ( $wpdb->query($wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_key = %s", $post_meta_key)) ) { /** @todo Get post_ids and delete cache */ // wp_cache_delete($post_id, 'post_meta'); return true; } return false; } /** * Retrieve post meta fields, based on post ID. * * The post meta fields are retrieved from the cache, so the function is * optimized to be called more than once. It also applies to the functions, that * use this function. * * @since 1.2.0 * @link http://codex.wordpress.org/Function_Reference/get_post_custom * * @uses $id Current Loop Post ID * * @param int $post_id post ID * @return array */ function get_post_custom($post_id = 0) { global $id; if ( !$post_id ) $post_id = (int) $id; $post_id = (int) $post_id; if ( ! wp_cache_get($post_id, 'post_meta') ) update_postmeta_cache($post_id); return wp_cache_get($post_id, 'post_meta'); } /** * 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 ) { $custom = get_post_custom($post_id); return $custom[$key]; } /** * 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 $post_id Optional. Post ID. * @return bool Whether post is sticky (true) or not sticky (false). */ function is_sticky($post_id = null) { global $id; $post_id = absint($post_id); if ( !$post_id ) $post_id = absint($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 just be returned. * * @since 2.3.0 * @uses sanitize_post_field() Used to sanitize the fields. * * @param object|array $post The Post Object or Array * @param string $context Optional, default is 'display'. How to sanitize post fields. * @return object|array The now sanitized Post Object or Array (will be the same type as $post) */ function sanitize_post($post, $context = 'display') { if ( 'raw' == $context ) return $post; if ( is_object($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, $context); } else { if ( !isset($post['ID']) ) $post['ID'] = 0; foreach ( array_keys($post) as $field ) $post[$field] = sanitize_post_field($field, $post[$field], $post['ID'], $context); } return $post; } /** * Sanitize post field based on context. * * Possible context values are: raw, edit, db, attribute, js, and display. The * display context is used by default. * * @since 2.3.0 * * @param string $field The Post Object field name. * @param mixed $value The Post Object value. * @param int $post_id Post ID. * @param string $context How to sanitize post fields. * @return mixed Sanitized value. */ function sanitize_post_field($field, $value, $post_id, $context) { $int_fields = array('ID', 'post_parent', 'menu_order'); if ( in_array($field, $int_fields) ) $value = (int) $value; 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) ) { $value = format_to_edit($value); } else { $value = attribute_escape($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 ) $value = attribute_escape($value); else if ( 'js' == $context ) $value = js_escape($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 is 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. * * @since 2.5.0 * @link http://codex.wordpress.org/Template_Tags/wp_count_posts * * @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; $user = wp_get_current_user(); $cache_key = $type; $query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s"; if ( 'readable' == $perm && is_user_logged_in() ) { if ( !current_user_can("read_private_{$type}s") ) { $cache_key .= '_' . $perm . '_' . $user->ID; $query .= " AND (post_status != 'private' OR ( post_author = '$user->ID' AND post_status = 'private' ))"; } } $query .= ' GROUP BY post_status'; $count = wp_cache_get($cache_key, 'counts'); if ( false !== $count ) return $count; $count = $wpdb->get_results( $wpdb->prepare( $query, $type ), ARRAY_A ); $stats = array( ); foreach( (array) $count as $row_num => $row ) { $stats[$row['post_status']] = $row['num_posts']; } $stats = (object) $stats; wp_cache_set($cache_key, $stats, 'counts'); return $stats; } /** * 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 GROUP BY post_mime_type", ARRAY_A ); $stats = array( ); foreach( (array) $count as $row ) { $stats[$row['post_mime_type']] = $row['num_posts']; } return (object) $stats; } /** * 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 $mime_types List of mime types or comma separated string of mime types. * @return string The SQL AND clause for mime searching. */ function wp_post_mime_type_where($post_mime_types) { $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, '%') ) $wheres[] = "post_mime_type LIKE '$mime_pattern'"; else $wheres[] = "post_mime_type = '$mime_pattern'"; } if ( !empty($wheres) ) $where = ' AND (' . join(' OR ', $wheres) . ') '; return $where; } /** * Removes a post, attachment, or page. * * When the post and page goes, everything that is tied to it is deleted also. * This includes comments, post meta fields, and terms associated with the post. * * @since 1.0.0 * @uses do_action() Calls 'deleted_post' hook on post ID. * * @param int $postid Post ID. * @return mixed */ function wp_delete_post($postid = 0) { global $wpdb, $wp_rewrite; if ( !$post = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $postid)) ) return $post; if ( 'attachment' == $post->post_type ) return wp_delete_attachment($postid); do_action('delete_post', $postid); /** @todo delete for pluggable post taxonomies too */ wp_delete_object_term_relationships($postid, array('category', 'post_tag')); $parent_data = array( 'post_parent' => $post->post_parent ); $parent_where = array( 'post_parent' => $postid ); 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') == $postid ) { update_option('show_on_front', 'posts'); delete_option('page_on_front'); } if ( get_option('page_for_posts') == $postid ) { delete_option('page_for_posts'); } // 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='page'", $postid); $children = $wpdb->get_results($children_query); $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => 'page' ) ); } // 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' ) ); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->posts WHERE ID = %d", $postid )); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->comments WHERE comment_post_ID = %d", $postid )); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE post_id = %d", $postid )); if ( 'page' == $post->post_type ) { clean_page_cache($postid); foreach ( (array) $children as $child ) clean_page_cache($child->ID); $wp_rewrite->flush_rules(); } else { clean_post_cache($postid); } do_action('deleted_post', $postid); return $post; } /** * 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 override 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() ) { $post_id = (int) $post_id; $defaults = array('fields' => 'all'); $args = wp_parse_args( $args, $defaults ); $tags = wp_get_object_terms($post_id, 'post_tag', $args); return $tags; } /** * Retrieve number of recent posts. * * @since 1.0.0 * @uses $wpdb * * @param int $num Optional, default is 10. Number of posts to get. * @return array List of posts. */ function wp_get_recent_posts($num = 10) { global $wpdb; // Set the limit clause, if we got a limit $num = (int) $num; if ($num) { $limit = "LIMIT $num"; } $sql = "SELECT * FROM $wpdb->posts WHERE post_type = 'post' ORDER BY post_date DESC $limit"; $result = $wpdb->get_results($sql,ARRAY_A); return $result ? $result : array(); } /** * Retrieve a single post, based on post ID. * * Has categories in 'post_category' property or key. Has tags in 'tags_input' * property or key. * * @since 1.0.0 * * @param int $postid Post ID. * @param string $mode How to return result, either OBJECT, ARRAY_N, or ARRAY_A. * @return object|array Post object or array holding post contents and information */ function wp_get_single_post($postid = 0, $mode = OBJECT) { $postid = (int) $postid; $post = get_post($postid, $mode); // Set categories and tags if($mode == OBJECT) { $post->post_category = wp_get_post_categories($postid); $post->tags_input = wp_get_post_tags($postid, array('fields' => 'names')); } else { $post['post_category'] = wp_get_post_categories($postid); $post['tags_input'] = wp_get_post_tags($postid, array('fields' => 'names')); } return $post; } /** * Insert a post. * * If the $postarr parameter has 'ID' set to a value, then post will be updated. * * You can set the post date manually, but 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. * * The defaults for the parameter $postarr are: * 'post_status' - Default is 'draft'. * 'post_type' - Default is 'post'. * 'post_author' - Default is current user ID. The ID of the user, who added * the post. * 'ping_status' - Default is the value in default ping status option. * Whether the attachment can accept pings. * 'post_parent' - Default is 0. 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' - Post content filtered. * 'post_excerpt' - Post excerpt. * * @since 1.0.0 * @uses $wpdb * @uses $wp_rewrite * @uses $user_ID * * @param array $postarr Optional. Override defaults. * @param bool $wp_error Optional. Allow return of WP_Error on failure. * @return int|WP_Error The value 0 or WP_Error on failure. The post ID on success. */ function wp_insert_post($postarr = array(), $wp_error = false) { global $wpdb, $wp_rewrite, $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); $postarr = wp_parse_args($postarr, $defaults); $postarr = sanitize_post($postarr, 'db'); // export array as variables extract($postarr, EXTR_SKIP); // Are we updating or creating? $update = false; if ( !empty($ID) ) { $update = true; $previous_status = get_post_field('post_status', $ID); } else { $previous_status = 'new'; } if ( ('' == $post_content) && ('' == $post_title) && ('' == $post_excerpt) ) { if ( $wp_error ) return new WP_Error('empty_content', __('Content, title, and excerpt are empty.')); else return 0; } // Make sure we set a valid category if ( empty($post_category) || 0 == count($post_category) || !is_array($post_category) ) { $post_category = array(get_option('default_category')); } //Set the default tag list if ( !isset($tags_input) ) $tags_input = array(); if ( empty($post_author) ) $post_author = $user_ID; if ( empty($post_status) ) $post_status = 'draft'; if ( empty($post_type) ) $post_type = 'post'; $post_ID = 0; // Get the post ID and GUID if ( $update ) { $post_ID = (int) $ID; $guid = get_post_field( 'guid', $post_ID ); } // Don't allow contributors to set 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' ) ) ) $post_name = sanitize_title($post_title); } else { $post_name = sanitize_title($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 ) $post_date = current_time('mysql'); if ( empty($post_date_gmt) || '0000-00-00 00:00:00' == $post_date_gmt ) { if ( !in_array( $post_status, array( 'draft', 'pending' ) ) ) $post_date_gmt = get_gmt_from_date($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) > mysql2date('U', $now) ) $post_status = 'future'; } if ( empty($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 $to_ping = ''; if ( ! isset($pinged) ) $pinged = ''; if ( isset($post_parent) ) $post_parent = (int) $post_parent; else $post_parent = 0; if ( !empty($post_ID) ) { if ( $post_parent == $post_ID ) { // Post can't be its own parent $post_parent = 0; } elseif ( !empty($post_parent) ) { $parent_post = get_post($post_parent); // Check for circular dependency if ( $parent_post->post_parent == $post_ID ) $post_parent = 0; } } if ( isset($menu_order) ) $menu_order = (int) $menu_order; else $menu_order = 0; if ( !isset($post_password) || 'private' == $post_status ) $post_password = ''; if ( !in_array( $post_status, array( 'draft', 'pending' ) ) ) { $post_name_check = $wpdb->get_var($wpdb->prepare("SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d AND post_parent = %d LIMIT 1", $post_name, $post_type, $post_ID, $post_parent)); if ($post_name_check || in_array($post_name, $wp_rewrite->feeds) ) { $suffix = 2; do { $alt_post_name = substr($post_name, 0, 200-(strlen($suffix)+1)). "-$suffix"; $post_name_check = $wpdb->get_var($wpdb->prepare("SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d AND post_parent = %d LIMIT 1", $alt_post_name, $post_type, $post_ID, $post_parent)); $suffix++; } while ($post_name_check); $post_name = $alt_post_name; } } // 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 = stripslashes_deep( $data ); $where = array( 'ID' => $post_ID ); if ($update) { do_action( 'pre_post_update', $post_ID ); 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'] = stripslashes( $post_mime_type ); // This isn't in the update // If there is a suggested ID, use it if not already present if ( !empty($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' => $post_ID ); } if ( !in_array($post_status, array('draft', 'pending')) ) { if ( empty($post_name) ) { $post_name = sanitize_title($post_title, $post_ID); } else { $post_name = sanitize_title($post_name, $post_ID); } $wpdb->update( $wpdb->posts, compact( 'post_name' ), $where ); } wp_set_post_categories( $post_ID, $post_category ); wp_set_post_tags( $post_ID, $tags_input ); $current_guid = get_post_field( 'guid', $post_ID ); if ( 'page' == $post_type ) clean_page_cache($post_ID); else clean_post_cache($post_ID); // Set GUID if ( !$update && '' == $current_guid ) $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post_ID ) ), $where ); $post = get_post($post_ID); if ( !empty($page_template) && 'page' == $post_type ) { $post->page_template = $page_template; $page_templates = get_page_templates(); if ( 'default' != $page_template && !in_array($page_template, $page_templates) ) { 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', $page_template); } wp_transition_post_status($post_status, $previous_status, $post); if ( $update) do_action('edit_post', $post_ID, $post); do_action('save_post', $post_ID, $post); do_action('wp_insert_post', $post_ID, $post); 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 $postarr Post data. * @return int 0 on failure, Post ID on success. */ function wp_update_post($postarr = array()) { if ( is_object($postarr) ) $postarr = get_object_vars($postarr); // First, get all of the original fields $post = wp_get_single_post($postarr['ID'], ARRAY_A); // Escape data pulled from DB. $post = add_magic_quotes($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 = $post['post_category']; // Drafts shouldn't be assigned a date unless explicitly done so by the user if ( in_array($post['post_status'], array('draft', 'pending')) && 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); } /** * Publish a post by transitioning the post status. * * @since 2.1.0 * @uses $wpdb * @uses do_action() Calls 'edit_post', 'save_post', and 'wp_insert_post' on post_id and post data. * * @param int $post_id Post ID. * @return null */ function wp_publish_post($post_id) { global $wpdb; $post = get_post($post_id); if ( empty($post) ) return; if ( 'publish' == $post->post_status ) return; $wpdb->update( $wpdb->posts, array( 'post_status' => 'publish' ), array( 'ID' => $post_id ) ); $old_status = $post->post_status; $post->post_status = 'publish'; wp_transition_post_status('publish', $old_status, $post); // Update counts for the post's terms. foreach ( (array) get_object_taxonomies('post') as $taxonomy ) { $tt_ids = wp_get_object_terms($post_id, $taxonomy, 'fields=tt_ids'); wp_update_term_count($tt_ids, $taxonomy); } do_action('edit_post', $post_id, $post); do_action('save_post', $post_id, $post); do_action('wp_insert_post', $post_id, $post); } /** * 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', $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); } /** * 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 bool|null Will return false if $post_id is not an integer or is 0. Will return null otherwise */ function wp_set_post_tags( $post_id = 0, $tags = '', $append = false ) { $post_id = (int) $post_id; if ( !$post_id ) return false; if ( empty($tags) ) $tags = array(); $tags = (is_array($tags)) ? $tags : explode( ',', trim($tags, " \n\t\r\0\x0B,") ); wp_set_object_terms($post_id, $tags, 'post_tag', $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 $post_categories Optional. List of categories. * @return bool|mixed */ function wp_set_post_categories($post_ID = 0, $post_categories = array()) { $post_ID = (int) $post_ID; // If $post_categories isn't already an array, make it one: if (!is_array($post_categories) || 0 == count($post_categories) || empty($post_categories)) $post_categories = array(get_option('default_category')); else if ( 1 == count($post_categories) && '' == $post_categories[0] ) return true; $post_categories = array_map('intval', $post_categories); $post_categories = array_unique($post_categories); return wp_set_object_terms($post_ID, $post_categories, 'category'); } /** * Transition the post status of a post. * * Calls hooks to transition post status. If the new post status is not the same * as the previous post status, then two hooks will be ran, 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 will run whether or not the post statuses are the same. The * action is named 'NEWSTATUS_POSTTYPE', NEWSTATUS is from the $new_status * parameter and POSTTYPE is post_type post data. * * @since 2.3.0 * * @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) { if ( $new_status != $old_status ) { 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) $new = stripslashes($new); return $wpdb->update( $wpdb->posts, array( 'pinged' => $new ), array( 'ID' => $post_id ) ); } /** * Retrieve enclosures already enclosed for a post. * * @since 1.5.0 * @uses $wpdb * * @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 = split( "\n", $enc ); $pung[] = trim( $enclosure[ 0 ] ); } } $pung = apply_filters('get_enclosed', $pung); 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 )); $to_ping = trim($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 $postdata = wp_get_single_post($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) . '...'; } $trackback_urls = explode(',', $tb_list); foreach( (array) $trackback_urls as $tb_url) { $tb_url = trim($tb_url); trackback($tb_url, stripslashes($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; if ( ! $page_ids = wp_cache_get('all_page_ids', 'posts') ) { $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. * * @since 1.5.1 * * @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 $filter How the return value should be filtered. * @return mixed Page data. */ function &get_page(&$page, $output = OBJECT, $filter = 'raw') { if ( empty($page) ) { if ( isset( $GLOBALS['page'] ) && isset( $GLOBALS['page']->ID ) ) { return get_post($GLOBALS['page'], $output, $filter); } else { $page = null; return $page; } } $the_page = get_post($page, $output, $filter); return $the_page; } /** * Retrieves a page given its path. * * @since 2.1.0 * @uses $wpdb * * @param string $page_path Page path * @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A. * @return mixed Null when complete. */ function get_page_by_path($page_path, $output = OBJECT) { global $wpdb; $page_path = rawurlencode(urldecode($page_path)); $page_path = str_replace('%2F', '/', $page_path); $page_path = str_replace('%20', ' ', $page_path); $page_paths = '/' . trim($page_path, '/'); $leaf_path = sanitize_title(basename($page_paths)); $page_paths = explode('/', $page_paths); $full_path = ''; foreach( (array) $page_paths as $pathdir) $full_path .= ($pathdir!=''?'/':'') . sanitize_title($pathdir); $pages = $wpdb->get_results( $wpdb->prepare( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_name = %s AND (post_type = 'page' OR post_type = 'attachment')", $leaf_path )); if ( empty($pages) ) return null; foreach ($pages as $page) { $path = '/' . $leaf_path; $curpage = $page; while ($curpage->post_parent != 0) { $curpage = $wpdb->get_row( $wpdb->prepare( "SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE ID = %d and post_type='page'", $curpage->post_parent )); $path = '/' . $curpage->post_name . $path; } if ( $path == $full_path ) return get_page($page->ID, $output); } return null; } /** * Retrieve a page given its title. * * @since 2.1.0 * @uses $wpdb * * @param string $page_title Page title * @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A. * @return mixed */ function get_page_by_title($page_title, $output = OBJECT) { global $wpdb; $page = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type='page'", $page_title )); if ( $page ) return get_page($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. * * Fetches the pages returned as a FLAT list, but arranged in order of their * hierarchy, i.e., child parents immediately follow their parents. * * @since 2.0.0 * * @param array $posts Posts array. * @param int $parent Parent page ID. * @return array */ function get_page_hierarchy($posts, $parent = 0) { $result = array ( ); if ($posts) { foreach ( (array) $posts as $post) { if ($post->post_parent == $parent) { $result[$post->ID] = $post->post_name; $children = get_page_hierarchy($posts, $post->ID); $result += $children; //append $children to $result } } } return $result; } /** * Builds URI for a page. * * Sub pages will be in the "directory" under the parent page post name. * * @since 1.5.0 * * @param int $page_id Page ID. * @return string Page URI. */ function get_page_uri($page_id) { $page = get_page($page_id); $uri = $page->post_name; // A page cannot be it's own parent. if ( $page->post_parent == $page->ID ) return $uri; while ($page->post_parent != 0) { $page = get_page($page->post_parent); $uri = $page->post_name . "/" . $uri; } return $uri; } /** * Retrieve a list of pages. * * The defaults that can be overridden are the following: 'child_of', * 'sort_order', 'sort_column', 'post_title', 'hierarchical', 'exclude', * 'include', 'meta_key', 'meta_value', and 'authors'. * * @since 1.5.0 * @uses $wpdb * * @param mixed $args Optional. Array or string of options that overrides defaults. * @return array List of pages matching defaults or $args */ function &get_pages($args = '') { global $wpdb; $defaults = array( 'child_of' => 0, 'sort_order' => 'ASC', 'sort_column' => 'post_title', 'hierarchical' => 1, 'exclude' => '', 'include' => '', 'meta_key' => '', 'meta_value' => '', 'authors' => '', 'parent' => -1, 'exclude_tree' => '' ); $r = wp_parse_args( $args, $defaults ); extract( $r, EXTR_SKIP ); $key = md5( serialize( compact(array_keys($defaults)) ) ); if ( $cache = wp_cache_get( 'get_pages', 'posts' ) ) { if ( isset( $cache[ $key ] ) ) { $pages = apply_filters('get_pages', $cache[ $key ], $r ); return $pages; } } $inclusions = ''; if ( !empty($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; $incpages = preg_split('/[\s,]+/',$include); if ( count($incpages) ) { foreach ( $incpages as $incpage ) { if (empty($inclusions)) $inclusions = $wpdb->prepare(' AND ( ID = %d ', $incpage); else $inclusions .= $wpdb->prepare(' OR ID = %d ', $incpage); } } } if (!empty($inclusions)) $inclusions .= ')'; $exclusions = ''; if ( !empty($exclude) ) { $expages = preg_split('/[\s,]+/',$exclude); if ( count($expages) ) { foreach ( $expages as $expage ) { if (empty($exclusions)) $exclusions = $wpdb->prepare(' AND ( ID <> %d ', $expage); else $exclusions .= $wpdb->prepare(' AND ID <> %d ', $expage); } } } if (!empty($exclusions)) $exclusions .= ')'; $author_query = ''; if (!empty($authors)) { $post_authors = preg_split('/[\s,]+/',$authors); if ( count($post_authors) ) { foreach ( $post_authors as $post_author ) { //Do we have an author id or an author login? if ( 0 == intval($post_author) ) { $post_author = get_userdatabylogin($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 ( ! empty( $meta_key ) || ! empty( $meta_value ) ) { $join = " LEFT JOIN $wpdb->postmeta ON ( $wpdb->posts.ID = $wpdb->postmeta.post_id )"; // meta_key and meta_value might be slashed $meta_key = stripslashes($meta_key); $meta_value = stripslashes($meta_value); if ( ! empty( $meta_key ) ) $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_key = %s", $meta_key); if ( ! empty( $meta_value ) ) $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_value = %s", $meta_value); } if ( $parent >= 0 ) $where .= $wpdb->prepare(' AND post_parent = %d ', $parent); $query = "SELECT * FROM $wpdb->posts $join WHERE (post_type = 'page' AND post_status = 'publish') $where "; $query .= $author_query; $query .= " ORDER BY " . $sort_column . " " . $sort_order ; $pages = $wpdb->get_results($query); if ( empty($pages) ) { $pages = apply_filters('get_pages', array(), $r); return $pages; } // Update cache. update_page_cache($pages); if ( $child_of || $hierarchical ) $pages = & get_page_children($child_of, $pages); if ( !empty($exclude_tree) ) { $exclude = array(); $exclude = (int) $exclude_tree; $children = get_page_children($exclude, $pages); $excludes = array(); foreach ( $children as $child ) $excludes[] = $child->ID; $excludes[] = $exclude; $total = count($pages); for ( $i = 0; $i < $total; $i++ ) { if ( in_array($pages[$i]->ID, $excludes) ) unset($pages[$i]); } } $cache[ $key ] = $pages; wp_cache_set( 'get_pages', $cache, 'posts' ); $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($url, get_bloginfo('url')) === false) return false; if (strpos($url, get_bloginfo('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 override, 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 $user_ID * * @param string|array $object Arguments to override defaults. * @param string $file Optional filename. * @param int $post_parent Parent post ID. * @return int Attachment ID. */ function wp_insert_attachment($object, $file = false, $parent = 0) { global $wpdb, $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); $object = wp_parse_args($object, $defaults); if ( !empty($parent) ) $object['post_parent'] = $parent; $object = sanitize_post($object, 'db'); // export array as variables extract($object, EXTR_SKIP); // Make sure we set a valid category if ( !isset($post_category) || 0 == count($post_category) || !is_array($post_category)) { $post_category = array(get_option('default_category')); } if ( empty($post_author) ) $post_author = $user_ID; $post_type = 'attachment'; $post_status = 'inherit'; // Are we updating or creating? if ( !empty($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_check = $wpdb->get_var( $wpdb->prepare( "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_status = 'inherit' AND ID != %d LIMIT 1", $post_name, $post_ID)); if ($post_name_check) { $suffix = 2; while ($post_name_check) { $alt_post_name = $post_name . "-$suffix"; // expected_slashed ($alt_post_name, $post_name) $post_name_check = $wpdb->get_var( $wpdb->prepare( "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_status = 'inherit' AND ID != %d AND post_parent = %d LIMIT 1", $alt_post_name, $post_ID, $post_parent)); $suffix++; } $post_name = $alt_post_name; } if ( empty($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 = stripslashes_deep( $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' => $post_ID ) ); } wp_set_post_categories($post_ID, $post_category); if ( $file ) update_attached_file( $post_ID, $file ); clean_post_cache($post_ID); if ( $update) { do_action('edit_attachment', $post_ID); } else { do_action('add_attachment', $post_ID); } return $post_ID; } /** * Delete an attachment. * * Will remove the file also, when the attachment is removed. Removes all post * meta fields, taxonomy, comments, etc associated with the attachment (except * the main post). * * @since 2.0.0 * @uses $wpdb * @uses do_action() Calls 'delete_attachment' hook on Attachment ID. * * @param int $postid Attachment ID. * @return mixed False on failure. Post data on success. */ function wp_delete_attachment($postid) { global $wpdb; if ( !$post = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE ID = %d", $postid)) ) return $post; if ( 'attachment' != $post->post_type ) return false; $meta = wp_get_attachment_metadata( $postid ); $file = get_attached_file( $postid ); /** @todo Delete for pluggable post taxonomies too */ wp_delete_object_term_relationships($postid, array('category', 'post_tag')); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->posts WHERE ID = %d", $postid )); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->comments WHERE comment_post_ID = %d", $postid )); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE post_id = %d ", $postid )); $uploadPath = wp_upload_dir(); if ( ! empty($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'].'%', $postid)) ) { $thumbfile = str_replace(basename($file), $meta['thumb'], $file); $thumbfile = apply_filters('wp_delete_file', $thumbfile); @ unlink( path_join($uploadPath['basedir'], $thumbfile) ); } } // remove intermediate images if there are any $sizes = apply_filters('intermediate_image_sizes', array('thumbnail', 'medium', 'large')); foreach ( $sizes as $size ) { if ( $intermediate = image_get_intermediate_size($postid, $size) ) { $intermediate_file = apply_filters('wp_delete_file', $intermediate['path']); @ unlink( path_join($uploadPath['basedir'], $intermediate_file) ); } } $file = apply_filters('wp_delete_file', $file); if ( ! empty($file) ) @ unlink($file); clean_post_cache($postid); do_action('delete_attachment', $postid); 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, $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; $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID ); return update_post_meta( $post->ID, '_wp_attachment_metadata', $data); } /** * 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; $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'], $file); //replace file location with url location } } if ( empty($url) ) //If any of the above options failed, Fallback on the GUID as used pre-2.7, not recomended to rely upon this. $url = get_the_guid( $post->ID ); if ( 'attachment' != $post->post_type || empty($url) ) return false; return apply_filters( 'wp_get_attachment_url', $url, $post->ID ); } /** * 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; $image_exts = array('jpg', 'jpeg', 'gif', 'png'); if ( 'image/' == substr($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 $mime MIME type * @return string|bool */ function wp_mime_type_icon( $mime = 0 ) { if ( !is_numeric($mime) ) $icon = wp_cache_get("mime_type_icon_$mime"); if ( empty($icon) ) { $post_id = 0; $post_mimes = array(); if ( is_numeric($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 ) { $dir = array_shift($keys = array_keys($dirs)); $uri = array_shift($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_set('icon_files', $icon_files, 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($mime) ) wp_cache_set("mime_type_icon_$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 posts and save old slug. * * The function is used along with form POST data. It checks for the wp-old-slug * POST field. Will only be concerned with published posts and the slug actually * changing. * * 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 posts, 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. * @return int Same as $post_id */ function wp_check_for_changed_slugs($post_id) { if ( !isset($_POST['wp-old-slug']) || !strlen($_POST['wp-old-slug']) ) return $post_id; $post = &get_post($post_id); // we're only concerned with published posts if ( $post->post_status != 'publish' || $post->post_type != 'post' ) return $post_id; // only bother if the slug has changed if ( $post->post_name == $_POST['wp-old-slug'] ) return $post_id; $old_slugs = (array) get_post_meta($post_id, '_wp_old_slug'); // if we haven't added this old slug before, add it now if ( !count($old_slugs) || !in_array($_POST['wp-old-slug'], $old_slugs) ) add_post_meta($post_id, '_wp_old_slug', $_POST['wp-old-slug']); // if the new slug was used previously, delete it from the list if ( in_array($post->post_name, $old_slugs) ) delete_post_meta($post_id, '_wp_old_slug', $post->post_name); return $post_id; } /** * Retrieve the private post SQL based on capability. * * This function provides a standardized way to appropriately select on the * post_status of posts/pages. 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. * * It also allows plugins that define their own post type to control the cap by * using the hook 'pub_priv_sql_capability'. The plugin is expected to return * the capability the user must have to read the private post type. * * @since 2.2.0 * * @uses $user_ID * @uses apply_filters() Call 'pub_priv_sql_capability' filter for plugins with different post types. * * @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) { global $user_ID; $cap = ''; // Private posts if ($post_type == 'post') { $cap = 'read_private_posts'; // Private pages } elseif ($post_type == 'page') { $cap = 'read_private_pages'; // Dunno what it is, maybe plugins have their own post type? } else { $cap = apply_filters('pub_priv_sql_capability', $cap); if (empty($cap)) { // We don't know what it is, filters don't change anything, // so set the SQL up to return nothing. return '1 = 0'; } } $sql = '(post_status = \'publish\''; if (current_user_can($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. $sql .= ' OR post_status = \'private\' AND post_author = \'' . $user_ID . '\''; } $sql .= ')'; return $sql; } /** * Retrieve the date the 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 $wpdb * @uses $blog_id * @uses apply_filters() Calls 'get_lastpostdate' filter * * @global mixed $cache_lastpostdate Stores the last post date * @global mixed $pagenow The current page being viewed * * @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') { global $cache_lastpostdate, $wpdb, $blog_id; $add_seconds_server = date('Z'); if ( !isset($cache_lastpostdate[$blog_id][$timezone]) ) { switch(strtolower($timezone)) { case 'gmt': $lastpostdate = $wpdb->get_var("SELECT post_date_gmt FROM $wpdb->posts WHERE post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1"); break; case 'blog': $lastpostdate = $wpdb->get_var("SELECT post_date FROM $wpdb->posts WHERE post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1"); break; case 'server': $lastpostdate = $wpdb->get_var("SELECT DATE_ADD(post_date_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1"); break; } $cache_lastpostdate[$blog_id][$timezone] = $lastpostdate; } else { $lastpostdate = $cache_lastpostdate[$blog_id][$timezone]; } return apply_filters( 'get_lastpostdate', $lastpostdate, $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 $wpdb * @uses $blog_id * @uses apply_filters() Calls 'get_lastpostmodified' filter * * @global mixed $cache_lastpostmodified Stores the date the last post was modified * * @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') { global $cache_lastpostmodified, $wpdb, $blog_id; $add_seconds_server = date('Z'); if ( !isset($cache_lastpostmodified[$blog_id][$timezone]) ) { switch(strtolower($timezone)) { case 'gmt': $lastpostmodified = $wpdb->get_var("SELECT post_modified_gmt FROM $wpdb->posts WHERE post_status = 'publish' ORDER BY post_modified_gmt DESC LIMIT 1"); break; case 'blog': $lastpostmodified = $wpdb->get_var("SELECT post_modified FROM $wpdb->posts WHERE post_status = 'publish' ORDER BY post_modified_gmt DESC LIMIT 1"); break; case 'server': $lastpostmodified = $wpdb->get_var("SELECT DATE_ADD(post_modified_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' ORDER BY post_modified_gmt DESC LIMIT 1"); break; } $lastpostdate = get_lastpostdate($timezone); if ( $lastpostdate > $lastpostmodified ) { $lastpostmodified = $lastpostdate; } $cache_lastpostmodified[$blog_id][$timezone] = $lastpostmodified; } else { $lastpostmodified = $cache_lastpostmodified[$blog_id][$timezone]; } return apply_filters( 'get_lastpostmodified', $lastpostmodified, $timezone ); } /** * Updates posts in cache. * * @usedby update_page_cache() Aliased by this function. * * @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. * * @package WordPress * @subpackage Cache * @since 2.0.0 * * @uses do_action() Will call the 'clean_post_cache' hook action. * * @param int $id The Post ID in the cache to clean */ function clean_post_cache($id) { global $_wp_suspend_cache_invalidation, $wpdb; if ( !empty($_wp_suspend_cache_invalidation) ) return; $id = (int) $id; wp_cache_delete($id, 'posts'); wp_cache_delete($id, 'post_meta'); clean_object_term_cache($id, 'post'); wp_cache_delete( 'wp_get_archives', 'general' ); do_action('clean_post_cache', $id); if ( $children = $wpdb->get_col( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_parent = %d", $id) ) ) { foreach( $children as $cid ) clean_post_cache( $cid ); } } /** * Alias of update_post_cache(). * * @see update_post_cache() Posts and pages are the same, alias is intentional * * @package WordPress * @subpackage Cache * @since 1.5.1 * * @param array $pages list of page objects */ function update_page_cache(&$pages) { update_post_cache($pages); } /** * Will clean the page in the cache. * * Clean (read: delete) page from cache that matches $id. Will also clean cache * associated with 'all_page_ids' and 'get_pages'. * * @package WordPress * @subpackage Cache * @since 2.0.0 * * @uses do_action() Will call the 'clean_page_cache' hook action. * * @param int $id Page ID to clean */ function clean_page_cache($id) { clean_post_cache($id); wp_cache_delete( 'all_page_ids', 'posts' ); wp_cache_delete( 'get_pages', 'posts' ); do_action('clean_page_cache', $id); } /** * Call major cache updating functions for list of Post objects. * * @package WordPress * @subpackage Cache * @since 1.5.0 * * @uses $wpdb * @uses update_post_cache() * @uses update_object_term_cache() * @uses update_postmeta_cache() * * @param array $posts Array of Post objects */ function update_post_caches(&$posts) { // No point in doing all this work if we didn't match any posts. if ( !$posts ) return; update_post_cache($posts); $post_ids = array(); for ($i = 0; $i < count($posts); $i++) $post_ids[] = $posts[$i]->ID; update_object_term_cache($post_ids, 'post'); update_postmeta_cache($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 * * @uses $wpdb * * @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) { global $wpdb; if ( empty( $post_ids ) ) return false; if ( !is_array($post_ids) ) { $post_ids = preg_replace('|[^0-9,]|', '', $post_ids); $post_ids = explode(',', $post_ids); } $post_ids = array_map('intval', $post_ids); $ids = array(); foreach ( (array) $post_ids as $id ) { if ( false === wp_cache_get($id, 'post_meta') ) $ids[] = $id; } if ( empty( $ids ) ) return false; // Get post-meta info $id_list = join(',', $ids); $cache = array(); if ( $meta_list = $wpdb->get_results("SELECT post_id, meta_key, meta_value FROM $wpdb->postmeta WHERE post_id IN ($id_list)", ARRAY_A) ) { foreach ( (array) $meta_list as $metarow) { $mpid = (int) $metarow['post_id']; $mkey = $metarow['meta_key']; $mval = $metarow['meta_value']; // Force subkeys to be array type: if ( !isset($cache[$mpid]) || !is_array($cache[$mpid]) ) $cache[$mpid] = array(); if ( !isset($cache[$mpid][$mkey]) || !is_array($cache[$mpid][$mkey]) ) $cache[$mpid][$mkey] = array(); // Add a value to the current pid/key: $cache[$mpid][$mkey][] = $mval; } } foreach ( (array) $ids as $id ) { if ( ! isset($cache[$id]) ) $cache[$id] = array(); } foreach ( (array) array_keys($cache) as $post) wp_cache_set($post, $cache[$post], 'post_meta'); return $cache; } // // Hooks // /** * Hook for managing future post transitions to published. * * @since 2.3.0 * @access private * @uses $wpdb * * @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 } // Always clears the hook in case the post status bounced from future to draft. wp_clear_scheduled_hook('publish_future_post', $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 * * @param int $deprecated Not Used. Can be set to null. * @param object $post Object type containing the post information */ function _future_post_hook($deprecated = '', $post) { wp_clear_scheduled_hook( 'publish_future_post', $post->ID ); wp_schedule_single_event(strtotime($post->post_date_gmt. ' GMT'), 'publish_future_post', array($post->ID)); } /** * Hook to schedule pings and enclosures when a post is published. * * @since 2.3.0 * @uses $wpdb * @uses XMLRPC_REQUEST * @uses APP_REQUEST * @uses do_action Calls 'xmlprc_publish_post' action if XMLRPC_REQUEST is defined. Calls 'app_publish_post' * action if APP_REQUEST is defined. * * @param int $post_id The ID in the database table of the post being published */ function _publish_post_hook($post_id) { global $wpdb; if ( defined('XMLRPC_REQUEST') ) do_action('xmlrpc_publish_post', $post_id); if ( defined('APP_REQUEST') ) do_action('app_publish_post', $post_id); if ( defined('WP_IMPORTING') ) return; $data = array( 'post_id' => $post_id, 'meta_value' => '1' ); if ( get_option('default_pingback_flag') ) $wpdb->insert( $wpdb->postmeta, $data + array( 'meta_key' => '_pingme' ) ); $wpdb->insert( $wpdb->postmeta, $data + array( 'meta_key' => '_encloseme' ) ); wp_schedule_single_event(time(), 'do_pings'); } /** * Hook used to prevent page/post cache and rewrite rules from staying dirty. * * Does two things. If the post is a page and has a template then it will * update/add that template to the meta. For both pages and posts, it will clean * the post cache to make sure that the cache updates to the changes done * recently. For pages, the rewrite rules of WordPress are flushed to allow for * any changes. * * The $post parameter, only uses 'post_type' property and 'page_template' * property. * * @since 2.3.0 * @uses $wp_rewrite Flushes Rewrite Rules. * * @param int $post_id The ID in the database table for the $post * @param object $post Object type containing the post information */ function _save_post_hook($post_id, $post) { if ( $post->post_type == 'page' ) { clean_page_cache($post_id); // Avoid flushing rules for every post during import. if ( !defined('WP_IMPORTING') ) { global $wp_rewrite; $wp_rewrite->flush_rules(); } } else { clean_post_cache($post_id); } } /** * Retrieve post ancestors and append to post ancestors property. * * Will only retrieve ancestors once, if property is already set, then nothing * will be done. If there is not a parent post, or post ID and post parent ID * are the same then nothing will be done. * * The parameter is passed by reference, so nothing needs to be returned. The * property will be updated and can be referenced after the function is * complete. The post parent will be an ancestor and the parent of the post * parent will be an ancestor. There will only be two ancestors at the most. * * @access private * @since unknown * @uses $wpdb * * @param object $_post Post data. * @return null When nothing needs to be done. */ function _get_post_ancestors(&$_post) { global $wpdb; if ( isset($_post->ancestors) ) return; $_post->ancestors = array(); if ( empty($_post->post_parent) || $_post->ID == $_post->post_parent ) return; $id = $_post->ancestors[] = $_post->post_parent; while ( $ancestor = $wpdb->get_var( $wpdb->prepare("SELECT `post_parent` FROM $wpdb->posts WHERE ID = %d LIMIT 1", $id) ) ) { if ( $id == $ancestor ) break; $id = $_post->ancestors[] = $ancestor; } } /** * Determines which fields of posts are to be saved in revisions. * * Does two things. If passed a post *array*, it will return a post array ready * to be insterted into the posts table as a post revision. Otherwise, returns * an array whose keys are the post fields to be saved for post revisions. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * @access private * * @param array $post Optional a post array to be processed for insertion as a post revision. * @param bool $autosave optional Is the revision an autosave? * @return array Post array ready to be inserted as a post revision or array of fields that can be versioned. */ function _wp_post_revision_fields( $post = null, $autosave = false ) { static $fields = false; if ( !$fields ) { // Allow these to be versioned $fields = array( 'post_title' => __( 'Title' ), 'post_content' => __( 'Content' ), 'post_excerpt' => __( 'Excerpt' ), ); // Runs only once $fields = apply_filters( '_wp_post_revision_fields', $fields ); // WP uses these internally either in versioning or elsewhere - they cannot be versioned foreach ( array( 'ID', 'post_name', 'post_parent', 'post_date', 'post_date_gmt', 'post_status', 'post_type', 'comment_count', 'post_author' ) as $protect ) unset( $fields[$protect] ); } if ( !is_array($post) ) return $fields; $return = array(); foreach ( array_intersect( array_keys( $post ), array_keys( $fields ) ) as $field ) $return[$field] = $post[$field]; $return['post_parent'] = $post['ID']; $return['post_status'] = 'inherit'; $return['post_type'] = 'revision'; $return['post_name'] = $autosave ? "$post[ID]-autosave" : "$post[ID]-revision"; $return['post_date'] = isset($post['post_modified']) ? $post['post_modified'] : ''; $return['post_date_gmt'] = isset($post['post_modified_gmt']) ? $post['post_modified_gmt'] : ''; return $return; } /** * Saves an already existing post as a post revision. * * Typically used immediately prior to post updates. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @uses _wp_put_post_revision() * * @param int $post_id The ID of the post to save as a revision. * @return mixed Null or 0 if error, new revision ID, if success. */ function wp_save_post_revision( $post_id ) { // We do autosaves manually with wp_create_post_autosave() if ( @constant( 'DOING_AUTOSAVE' ) ) return; // WP_POST_REVISIONS = 0, false if ( !constant('WP_POST_REVISIONS') ) return; if ( !$post = get_post( $post_id, ARRAY_A ) ) return; if ( !in_array( $post['post_type'], array( 'post', 'page' ) ) ) return; $return = _wp_put_post_revision( $post ); // WP_POST_REVISIONS = true (default), -1 if ( !is_numeric( WP_POST_REVISIONS ) || WP_POST_REVISIONS < 0 ) return $return; // all revisions and (possibly) one autosave $revisions = wp_get_post_revisions( $post_id, array( 'order' => 'ASC' ) ); // WP_POST_REVISIONS = (int) (# of autasaves to save) $delete = count($revisions) - WP_POST_REVISIONS; if ( $delete < 1 ) return $return; $revisions = array_slice( $revisions, 0, $delete ); for ( $i = 0; isset($revisions[$i]); $i++ ) { if ( false !== strpos( $revisions[$i]->post_name, 'autosave' ) ) continue; wp_delete_post_revision( $revisions[$i]->ID ); } return $return; } /** * Retrieve the autosaved data of the specified post. * * Returns a post object containing the information that was autosaved for the * specified post. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @param int $post_id The post ID. * @return object|bool The autosaved data or false on failure or when no autosave exists. */ function wp_get_post_autosave( $post_id ) { if ( !$post = get_post( $post_id ) ) return false; $q = array( 'name' => "{$post->ID}-autosave", 'post_parent' => $post->ID, 'post_type' => 'revision', 'post_status' => 'inherit' ); // Use WP_Query so that the result gets cached $autosave_query = new WP_Query; add_action( 'parse_query', '_wp_get_post_autosave_hack' ); $autosave = $autosave_query->query( $q ); remove_action( 'parse_query', '_wp_get_post_autosave_hack' ); if ( $autosave && is_array($autosave) && is_object($autosave[0]) ) return $autosave[0]; return false; } /** * Internally used to hack WP_Query into submission. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @param object $query WP_Query object */ function _wp_get_post_autosave_hack( $query ) { $query->is_single = false; } /** * Determines if the specified post is a revision. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @param int|object $post Post ID or post object. * @return bool|int False if not a revision, ID of revision's parent otherwise. */ function wp_is_post_revision( $post ) { if ( !$post = wp_get_post_revision( $post ) ) return false; return (int) $post->post_parent; } /** * Determines if the specified post is an autosave. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @param int|object $post Post ID or post object. * @return bool|int False if not a revision, ID of autosave's parent otherwise */ function wp_is_post_autosave( $post ) { if ( !$post = wp_get_post_revision( $post ) ) return false; if ( "{$post->post_parent}-autosave" !== $post->post_name ) return false; return (int) $post->post_parent; } /** * Inserts post data into the posts table as a post revision. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @uses wp_insert_post() * * @param int|object|array $post Post ID, post object OR post array. * @param bool $autosave Optional. Is the revision an autosave? * @return mixed Null or 0 if error, new revision ID if success. */ function _wp_put_post_revision( $post = null, $autosave = false ) { if ( is_object($post) ) $post = get_object_vars( $post ); elseif ( !is_array($post) ) $post = get_post($post, ARRAY_A); if ( !$post || empty($post['ID']) ) return; if ( isset($post['post_type']) && 'revision' == $post['post_type'] ) return new WP_Error( 'post_type', __( 'Cannot create a revision of a revision' ) ); $post = _wp_post_revision_fields( $post, $autosave ); $revision_id = wp_insert_post( $post ); if ( is_wp_error($revision_id) ) return $revision_id; if ( $revision_id ) do_action( '_wp_put_post_revision', $revision_id ); return $revision_id; } /** * Gets a post revision. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @uses get_post() * * @param int|object $post Post ID or post object * @param string $output Optional. OBJECT, ARRAY_A, or ARRAY_N. * @param string $filter Optional sanitation filter. @see sanitize_post() * @return mixed Null if error or post object if success */ function &wp_get_post_revision(&$post, $output = OBJECT, $filter = 'raw') { $null = null; if ( !$revision = get_post( $post, OBJECT, $filter ) ) return $revision; if ( 'revision' !== $revision->post_type ) return $null; if ( $output == OBJECT ) { return $revision; } elseif ( $output == ARRAY_A ) { $_revision = get_object_vars($revision); return $_revision; } elseif ( $output == ARRAY_N ) { $_revision = array_values(get_object_vars($revision)); return $_revision; } return $revision; } /** * Restores a post to the specified revision. * * Can restore a past using all fields of the post revision, or only selected * fields. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @uses wp_get_post_revision() * @uses wp_update_post() * * @param int|object $revision_id Revision ID or revision object. * @param array $fields Optional. What fields to restore from. Defaults to all. * @return mixed Null if error, false if no fields to restore, (int) post ID if success. */ function wp_restore_post_revision( $revision_id, $fields = null ) { if ( !$revision = wp_get_post_revision( $revision_id, ARRAY_A ) ) return $revision; if ( !is_array( $fields ) ) $fields = array_keys( _wp_post_revision_fields() ); $update = array(); foreach( array_intersect( array_keys( $revision ), $fields ) as $field ) $update[$field] = $revision[$field]; if ( !$update ) return false; $update['ID'] = $revision['post_parent']; $post_id = wp_update_post( $update ); if ( is_wp_error( $post_id ) ) return $post_id; if ( $post_id ) do_action( 'wp_restore_post_revision', $post_id, $revision['ID'] ); return $post_id; } /** * Deletes a revision. * * Deletes the row from the posts table corresponding to the specified revision. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @uses wp_get_post_revision() * @uses wp_delete_post() * * @param int|object $revision_id Revision ID or revision object. * @param array $fields Optional. What fields to restore from. Defaults to all. * @return mixed Null if error, false if no fields to restore, (int) post ID if success. */ function wp_delete_post_revision( $revision_id ) { if ( !$revision = wp_get_post_revision( $revision_id ) ) return $revision; $delete = wp_delete_post( $revision->ID ); if ( is_wp_error( $delete ) ) return $delete; if ( $delete ) do_action( 'wp_delete_post_revision', $revision->ID, $revision ); return $delete; } /** * Returns all revisions of specified post. * * @package WordPress * @subpackage Post_Revisions * @since 2.6.0 * * @uses get_children() * * @param int|object $post_id Post ID or post object * @return array empty if no revisions */ function wp_get_post_revisions( $post_id = 0, $args = null ) { if ( !constant('WP_POST_REVISIONS') ) return array(); if ( ( !$post = get_post( $post_id ) ) || empty( $post->ID ) ) return array(); $defaults = array( 'order' => 'DESC', 'orderby' => 'date' ); $args = wp_parse_args( $args, $defaults ); $args = array_merge( $args, array( 'post_parent' => $post->ID, 'post_type' => 'revision', 'post_status' => 'inherit' ) ); if ( !$revisions = get_children( $args ) ) return array(); return $revisions; } function _set_preview($post) { if ( ! is_object($post) ) return $post; $preview = wp_get_post_autosave($post->ID); if ( ! is_object($preview) ) return $post; $preview = sanitize_post($preview); $post->post_content = $preview->post_content; $post->post_title = $preview->post_title; $post->post_excerpt = $preview->post_excerpt; return $post; } function _show_post_preview() { if ( isset($_GET['preview_id']) && isset($_GET['preview_nonce']) ) { $id = (int) $_GET['preview_id']; if ( false == wp_verify_nonce( $_GET['preview_nonce'], 'post_preview_' . $id ) ) wp_die( __('You do not have permission to preview drafts.') ); add_filter('the_preview', '_set_preview'); } }