f (!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. * * The first is 'transition_post_status' with new status, old status, and post data. * * The next action called is 'OLDSTATUS_to_NEWSTATUS' the 'NEWSTATUS' is the * $new_status parameter and the 'OLDSTATUS' is $old_status parameter; it has the * post data. * * The final action is named 'NEWSTATUS_POSTTYPE', 'NEWSTATUS' is from the $new_status * parameter and POSTTYPE is post_type post data. * * @since 2.3.0 * @link http://codex.wordpress.org/Post_Status_Transitions * * @uses do_action() Calls 'transition_post_status' on $new_status, $old_status and * $post if there is a status change. * @uses do_action() Calls '${old_status}_to_$new_status' on $post if there is a status change. * @uses do_action() Calls '${new_status}_$post->post_type' on post ID and $post. * * @param string $new_status Transition to this post status. * @param string $old_status Previous post status. * @param object $post Post data. */ function wp_transition_post_status($new_status, $old_status, $post) { do_action('transition_post_status', $new_status, $old_status, $post); do_action("${old_status}_to_$new_status", $post); do_action("${new_status}_$post->post_type", $post->ID, $post); } // // Trackback and ping functions // /** * Add a URL to those already pung. * * @since 1.5.0 * @uses $wpdb * * @param int $post_id Post ID. * @param string $uri Ping URI. * @return int How many rows were updated. */ function add_ping($post_id, $uri) { global $wpdb; $pung = $wpdb->get_var( $wpdb->prepare( "SELECT pinged FROM $wpdb->posts WHERE ID = %d", $post_id )); $pung = trim($pung); $pung = preg_split('/\s/', $pung); $pung[] = $uri; $new = implode("\n", $pung); $new = apply_filters('add_ping', $new); // expected_slashed ($new) $new = stripslashes($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['post'] ) && isset( $GLOBALS['post']->ID ) ) { return get_post($GLOBALS['post'], $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. * * It uses auxiliary structure to hold parent-children relationships and * runs in O(N) complexity * * @since 2.0.0 * * @param array $posts Posts array. * @param int $parent Parent page ID. * @return array A list arranged by hierarchy. Children immediately follow their parents. */ function &get_page_hierarchy( &$pages, $page_id = 0 ) { if ( empty( $pages ) ) { $return = array(); return $return; } $children = array(); foreach ( (array) $pages as $p ) { $parent_id = intval( $p->post_parent ); $children[ $parent_id ][] = $p; } $result = array(); _page_traverse_name( $page_id, $children, $result ); return $result; } /** * function to traverse and return all the nested children post names of a root page. * $children contains parent-chilren relations * */ function _page_traverse_name( $page_id, &$children, &$result ){ if ( isset( $children[ $page_id ] ) ){ foreach( (array)$children[ $page_id ] as $child ) { $result[ $child->ID ] = $child->post_name; _page_traverse_name( $child->ID, $children, $result ); } } } /** * Builds URI for a page. * * Sub pages will be in the "directory" under the parent page post name. * * @since 1.5.0 * * @param 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','authors', 'number', and 'offset'. * * @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' => '', 'number' => '', 'offset' => 0 ); $r = wp_parse_args( $args, $defaults ); extract( $r, EXTR_SKIP ); $number = (int) $number; $offset = (int) $offset; $cache = array(); $key = md5( serialize( compact(array_keys($defaults)) ) ); if ( $cache = wp_cache_get( 'get_pages', 'posts' ) ) { if ( is_array($cache) && isset( $cache[ $key ] ) ) { $pages = apply_filters('get_pages', $cache[ $key ], $r ); return $pages; } } if ( !is_array($cache) ) $cache = array(); $inclusions = ''; if ( !empty($include) ) { $child_of = 0; //ignore child_of, parent, exclude, meta_key, and meta_value params if using include $parent = -1; $exclude = ''; $meta_key = ''; $meta_value = ''; $hierarchical = false; $incpages = preg_split('/[\s,]+/',$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 . " " . $sort_order ; if ( !empty($number) ) $query .= ' LIMIT ' . $offset . ',' . $number; $pages = $wpdb->get_results($query); if ( empty($pages) ) { $pages = apply_filters('get_pages', array(), $r); return $pages; } // Sanitize before caching so it'll only get done once $num_pages = count($pages); for ($i = 0; $i < $num_pages; $i++) { $pages[$i] = sanitize_post($pages[$i], 'raw'); } // Update cache. update_page_cache($pages); if ( $child_of || $hierarchical ) $pages = & get_page_children($child_of, $pages); if ( !empty($exclude_tree) ) { $exclude = (int) $exclude_tree; $children = get_page_children($exclude, $pages); $excludes = array(); foreach ( $children as $child ) $excludes[] = $child->ID; $excludes[] = $exclude; $num_pages = count($pages); for ( $i = 0; $i < $num_pages; $i++ ) { if ( in_array($pages[$i]->ID, $excludes) ) unset($pages[$i]); } } $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 overridden, set the same as parent post. * 'post_type' - Default is 'post', will be set to attachment. Can not override. * 'post_author' - Default is current user ID. The ID of the user, who added the attachment. * 'ping_status' - Default is the value in default ping status option. Whether the attachment * can accept pings. * 'post_parent' - Default is 0. Can use $parent parameter or set this for the post it belongs * to, if any. * 'menu_order' - Default is 0. The order it is displayed. * 'to_ping' - Whether to ping. * 'pinged' - Default is empty string. * 'post_password' - Default is empty string. The password to access the attachment. * 'guid' - Global Unique ID for referencing the attachment. * 'post_content_filtered' - Attachment post content filtered. * 'post_excerpt' - Attachment excerpt. * * @since 2.0.0 * @uses $wpdb * @uses $user_ID * @uses do_action() Calls 'edit_attachment' on $post_ID if this is an update. * @uses do_action() Calls 'add_attachment' on $post_ID if this is not an update. * * @param string|array $object Arguments to override defaults. * @param string $file Optional filename. * @param int $post_parent Parent post ID. * @return int Attachment ID. */ function wp_insert_attachment($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) $post_name = wp_unique_post_slug($post_name, $post_ID, $post_status, $post_type, $post_parent); if ( empty($post_date) ) $post_date = current_time('mysql'); if ( empty($post_date_gmt) ) $post_date_gmt = current_time('mysql', 1); if ( empty($post_modified) ) $post_modified = $post_date; if ( empty($post_modified_gmt) ) $post_modified_gmt = $post_date_gmt; if ( empty($comment_status) ) { if ( $update ) $comment_status = 'closed'; else $comment_status = get_option('default_comment_status'); } if ( empty($ping_status) ) $ping_status = get_option('default_ping_status'); if ( isset($to_ping) ) $to_ping = preg_replace('|\s+|', "\n", $to_ping); else $to_ping = ''; if ( isset($post_parent) ) $post_parent = (int) $post_parent; else $post_parent = 0; if ( isset($menu_order) ) $menu_order = (int) $menu_order; else $menu_order = 0; if ( !isset($post_password) ) $post_password = ''; if ( ! isset($pinged) ) $pinged = ''; // expected_slashed (everything!) $data = compact( array( 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_content_filtered', 'post_title', 'post_excerpt', 'post_status', 'post_type', 'comment_status', 'ping_status', 'post_password', 'post_name', 'to_ping', 'pinged', 'post_modified', 'post_modified_gmt', 'post_parent', 'menu_order', 'post_mime_type', 'guid' ) ); $data = 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 ( isset($post_parent) && $post_parent < 0 ) add_post_meta($post_ID, '_wp_attachment_temp_parent', $post_parent, true); 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. * @param bool $force_delete Whether to bypass trash and force deletion * @return mixed False on failure. Post data on success. */ function wp_delete_attachment( $post_id, $force_delete = false ) { global $wpdb; if ( !$post = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id) ) ) return $post; if ( 'attachment' != $post->post_type ) return false; if ( !$force_delete && EMPTY_TRASH_DAYS && MEDIA_TRASH && 'trash' != $post->post_status ) return wp_trash_post( $post_id ); delete_post_meta($post_id, '_wp_trash_meta_status'); delete_post_meta($post_id, '_wp_trash_meta_time'); $meta = wp_get_attachment_metadata( $post_id ); $backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true ); $file = get_attached_file( $post_id ); do_action('delete_attachment', $post_id); wp_delete_object_term_relationships($post_id, array('category', 'post_tag')); wp_delete_object_term_relationships($post_id, get_object_taxonomies($post->post_type)); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE meta_key = '_thumbnail_id' AND meta_value = %d", $post_id )); $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id )); if ( ! empty($comment_ids) ) { do_action( 'delete_comment', $comment_ids ); $in_comment_ids = "'" . implode("', '", $comment_ids) . "'"; $wpdb->query( "DELETE FROM $wpdb->comments WHERE comment_ID IN($in_comment_ids)" ); do_action( 'deleted_comment', $comment_ids ); } $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id )); if ( !empty($post_meta_ids) ) { do_action( 'delete_postmeta', $post_meta_ids ); $in_post_meta_ids = "'" . implode("', '", $post_meta_ids) . "'"; $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_id IN($in_post_meta_ids)" ); do_action( 'deleted_postmeta', $post_meta_ids ); } do_action( 'delete_post', $post_id ); $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->posts WHERE ID = %d", $post_id )); do_action( 'deleted_post', $post_id ); $uploadpath = wp_upload_dir(); if ( ! empty($meta['thumb']) ) { // Don't delete the thumb if another attachment uses it if (! $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attachment_metadata' AND meta_value LIKE %s AND post_id <> %d", '%' . $meta['thumb'] . '%', $post_id)) ) { $thumbfile = str_replace(basename($file), $meta['thumb'], $file); $thumbfile = apply_filters('wp_delete_file', $thumbfile); @ unlink( path_join($uploadpath['basedir'], $thumbfile) ); } } // remove intermediate and backup images if there are any $sizes = apply_filters('intermediate_image_sizes', array('thumbnail', 'medium', 'large')); foreach ( $sizes as $size ) { if ( $intermediate = image_get_intermediate_size($post_id, $size) ) { $intermediate_file = apply_filters('wp_delete_file', $intermediate['path']); @ unlink( path_join($uploadpath['basedir'], $intermediate_file) ); } } if ( is_array($backup_sizes) ) { foreach ( $backup_sizes as $size ) { $del_file = path_join( dirname($meta['file']), $size['file'] ); $del_file = apply_filters('wp_delete_file', $del_file); @ unlink( path_join($uploadpath['basedir'], $del_file) ); } } $file = apply_filters('wp_delete_file', $file); if ( ! empty($file) ) @ unlink($file); clean_post_cache($post_id); 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'], $file); //replace file location with url location elseif ( false !== strpos($file, 'wp-content/uploads') ) $url = $uploads['baseurl'] . substr( $file, strpos($file, 'wp-content/uploads') + 18 ); else $url = $uploads['baseurl'] . "/$file"; //Its a newly uploaded file, therefor $file is relative to the basedir. } } if ( empty($url) ) //If any of the above options failed, Fallback on the GUID as used pre-2.7, not 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' AND post_type = 'post' 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' AND post_type = 'post' 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' AND post_type = 'post' 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' AND post_type = 'post' 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' AND post_type = 'post' 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' AND post_type = 'post' 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. * * clean_post_cache() will call itself recursively for each child post. * * This function not run if $_wp_suspend_cache_invalidation is not empty. See * wp_suspend_cache_invalidation(). * * @package WordPress * @subpackage Cache * @since 2.0.0 * * @uses do_action() Calls 'clean_post_cache' on $id before adding children (if any). * * @param int $id The Post ID in the cache to clean */ function clean_post_cache($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) { return update_meta_cache('post', $post_ids); } // // Hooks // /** * Hook for managing future post transitions to published. * * @since 2.3.0 * @access private * @uses $wpdb * @uses do_action() Calls 'private_to_published' on post ID if this is a 'private_to_published' call. * @uses wp_clear_scheduled_hook() with 'publish_future_post' and post ID. * * @param string $new_status New post status * @param string $old_status Previous post status * @param object $post Object type containing the post information */ function _transition_post_status($new_status, $old_status, $post) { global $wpdb; if ( $old_status != 'publish' && $new_status == 'publish' ) { // Reset GUID if transitioning to publish and it is empty if ( '' == get_the_guid($post->ID) ) $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) ); do_action('private_to_published', $post->ID); // Deprecated, use private_to_publish } // 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 * @access private * * @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 * @access private * @uses $wpdb * @uses XMLRPC_REQUEST and APP_REQUEST constants. * @uses do_action() Calls 'xmlprc_publish_post' on post ID if XMLRPC_REQUEST is defined. * @uses do_action() Calls 'app_publish_post' on post ID 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' ) ); do_action( 'added_postmeta', $wpdb->insert_id, $post_id, '_pingme', 1 ); } $wpdb->insert( $wpdb->postmeta, $data + array( 'meta_key' => '_encloseme' ) ); do_action( 'added_postmeta', $wpdb->insert_id, $post_id, '_encloseme', 1 ); 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 * @access private * @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; $wp_rewrite->flush_rules(false); } } else { clean_post_cache($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. * * @since unknown * @access private * @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 * @uses apply_filters() Calls '_wp_post_revision_fields' on 'title', 'content' and 'excerpt' fields. * * @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( $post_id ) { // We do autosaves manually with wp_create_post_autosave() if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return; // WP_POST_REVISIONS = 0, false if ( !constant('WP_POST_REVISIONS') ) return; if ( !$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 ); $post = add_magic_quotes($post); //since data is from db $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 revision 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() * @uses do_action() Calls 'wp_restore_post_revision' on post ID and revision ID if wp_update_post() * is successful. * * @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']; $update = add_magic_quotes( $update ); //since data is from db $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'); } }
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