+ $post_type_object->add_hooks();
+ $post_type_object->register_taxonomies();
+
+ /**
+ * Fires after a post type is registered.
+ *
+ * @since 3.3.0
+ * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
+ *
+ * @param string $post_type Post type.
+ * @param WP_Post_Type $post_type_object Arguments used to register the post type.
+ */
+ do_action( 'registered_post_type', $post_type, $post_type_object );
+
+ return $post_type_object;
+}
+
+/**
+ * Unregisters a post type.
+ *
+ * Can not be used to unregister built-in post types.
+ *
+ * @since 4.5.0
+ *
+ * @global array $wp_post_types List of post types.
+ *
+ * @param string $post_type Post type to unregister.
+ * @return bool|WP_Error True on success, WP_Error on failure or if the post type doesn't exist.
+ */
+function unregister_post_type( $post_type ) {
+ global $wp_post_types;
+
+ if ( ! post_type_exists( $post_type ) ) {
+ return new WP_Error( 'invalid_post_type', __( 'Invalid post type.' ) );
+ }
+
+ $post_type_object = get_post_type_object( $post_type );
+
+ // Do not allow unregistering internal post types.
+ if ( $post_type_object->_builtin ) {
+ return new WP_Error( 'invalid_post_type', __( 'Unregistering a built-in post type is not allowed' ) );
+ }
+
+ $post_type_object->remove_supports();
+ $post_type_object->remove_rewrite_rules();
+ $post_type_object->unregister_meta_boxes();
+ $post_type_object->remove_hooks();
+ $post_type_object->unregister_taxonomies();
+
+ unset( $wp_post_types[ $post_type ] );
+
+ /**
+ * Fires after a post type was unregistered.
+ *
+ * @since 4.5.0
+ *
+ * @param string $post_type Post type key.
+ */
+ do_action( 'unregistered_post_type', $post_type );
+
+ return true;
+}
+
+/**
+ * Build an object with all post type capabilities out of a post type object
+ *
+ * Post type capabilities use the 'capability_type' argument as a base, if the
+ * capability is not set in the 'capabilities' argument array or if the
+ * 'capabilities' argument is not supplied.
+ *
+ * The capability_type argument can optionally be registered as an array, with
+ * the first value being singular and the second plural, e.g. array('story, 'stories')
+ * Otherwise, an 's' will be added to the value for the plural form. After
+ * registration, capability_type will always be a string of the singular value.
+ *
+ * By default, seven keys are accepted as part of the capabilities array:
+ *
+ * - edit_post, read_post, and delete_post are meta capabilities, which are then
+ * generally mapped to corresponding primitive capabilities depending on the
+ * context, which would be the post being edited/read/deleted and the user or
+ * role being checked. Thus these capabilities would generally not be granted
+ * directly to users or roles.
+ *
+ * - edit_posts - Controls whether objects of this post type can be edited.
+ * - edit_others_posts - Controls whether objects of this type owned by other users
+ * can be edited. If the post type does not support an author, then this will
+ * behave like edit_posts.
+ * - publish_posts - Controls publishing objects of this post type.
+ * - read_private_posts - Controls whether private objects can be read.
+ *
+ * These four primitive capabilities are checked in core in various locations.
+ * There are also seven other primitive capabilities which are not referenced
+ * directly in core, except in map_meta_cap(), which takes the three aforementioned
+ * meta capabilities and translates them into one or more primitive capabilities
+ * that must then be checked against the user or role, depending on the context.
+ *
+ * - read - Controls whether objects of this post type can be read.
+ * - delete_posts - Controls whether objects of this post type can be deleted.
+ * - delete_private_posts - Controls whether private objects can be deleted.
+ * - delete_published_posts - Controls whether published objects can be deleted.
+ * - delete_others_posts - Controls whether objects owned by other users can be
+ * can be deleted. If the post type does not support an author, then this will
+ * behave like delete_posts.
+ * - edit_private_posts - Controls whether private objects can be edited.
+ * - edit_published_posts - Controls whether published objects can be edited.
+ *
+ * These additional capabilities are only used in map_meta_cap(). Thus, they are
+ * only assigned by default if the post type is registered with the 'map_meta_cap'
+ * argument set to true (default is false).
+ *
+ * @since 3.0.0
+ *
+ * @see register_post_type()
+ * @see map_meta_cap()
+ *
+ * @param object $args Post type registration arguments.
+ * @return object object with all the capabilities as member variables.
+ */
+function get_post_type_capabilities( $args ) {
+ if ( ! is_array( $args->capability_type ) )
+ $args->capability_type = array( $args->capability_type, $args->capability_type . 's' );
+
+ // Singular base for meta capabilities, plural base for primitive capabilities.
+ list( $singular_base, $plural_base ) = $args->capability_type;
+
+ $default_capabilities = array(
+ // Meta capabilities
+ 'edit_post' => 'edit_' . $singular_base,
+ 'read_post' => 'read_' . $singular_base,
+ 'delete_post' => 'delete_' . $singular_base,
+ // Primitive capabilities used outside of map_meta_cap():
+ 'edit_posts' => 'edit_' . $plural_base,
+ 'edit_others_posts' => 'edit_others_' . $plural_base,
+ 'publish_posts' => 'publish_' . $plural_base,
+ 'read_private_posts' => 'read_private_' . $plural_base,
+ );
+
+ // Primitive capabilities used within map_meta_cap():
+ if ( $args->map_meta_cap ) {
+ $default_capabilities_for_mapping = array(
+ 'read' => 'read',
+ 'delete_posts' => 'delete_' . $plural_base,
+ 'delete_private_posts' => 'delete_private_' . $plural_base,
+ 'delete_published_posts' => 'delete_published_' . $plural_base,
+ 'delete_others_posts' => 'delete_others_' . $plural_base,
+ 'edit_private_posts' => 'edit_private_' . $plural_base,
+ 'edit_published_posts' => 'edit_published_' . $plural_base,
+ );
+ $default_capabilities = array_merge( $default_capabilities, $default_capabilities_for_mapping );
+ }
+
+ $capabilities = array_merge( $default_capabilities, $args->capabilities );
+
+ // Post creation capability simply maps to edit_posts by default:
+ if ( ! isset( $capabilities['create_posts'] ) )
+ $capabilities['create_posts'] = $capabilities['edit_posts'];
+
+ // Remember meta capabilities for future reference.
+ if ( $args->map_meta_cap )
+ _post_type_meta_capabilities( $capabilities );
+
+ return (object) $capabilities;
+}
+
+/**
+ * Store or return a list of post type meta caps for map_meta_cap().
+ *
+ * @since 3.1.0
+ * @access private
+ *
+ * @global array $post_type_meta_caps Used to store meta capabilities.
+ *
+ * @param array $capabilities Post type meta capabilities.
+ */
+function _post_type_meta_capabilities( $capabilities = null ) {
+ global $post_type_meta_caps;
+
+ foreach ( $capabilities as $core => $custom ) {
+ if ( in_array( $core, array( 'read_post', 'delete_post', 'edit_post' ) ) ) {
+ $post_type_meta_caps[ $custom ] = $core;
+ }
+ }
+}
+
+/**
+ * Builds an object with all post type labels out of a post type object.
+ *
+ * Accepted keys of the label array in the post type object:
+ *
+ * - `name` - General name for the post type, usually plural. The same and overridden
+ * by `$post_type_object->label`. Default is 'Posts' / 'Pages'.
+ * - `singular_name` - Name for one object of this post type. Default is 'Post' / 'Page'.
+ * - `add_new` - Default is 'Add New' for both hierarchical and non-hierarchical types.
+ * When internationalizing this string, please use a {@link https://codex.wordpress.org/I18n_for_WordPress_Developers#Disambiguation_by_context gettext context}
+ * matching your post type. Example: `_x( 'Add New', 'product', 'textdomain' );`.
+ * - `add_new_item` - Label for adding a new singular item. Default is 'Add New Post' / 'Add New Page'.
+ * - `edit_item` - Label for editing a singular item. Default is 'Edit Post' / 'Edit Page'.
+ * - `new_item` - Label for the new item page title. Default is 'New Post' / 'New Page'.
+ * - `view_item` - Label for viewing a singular item. Default is 'View Post' / 'View Page'.
+ * - `view_items` - Label for viewing post type archives. Default is 'View Posts' / 'View Pages'.
+ * - `search_items` - Label for searching plural items. Default is 'Search Posts' / 'Search Pages'.
+ * - `not_found` - Label used when no items are found. Default is 'No posts found' / 'No pages found'.
+ * - `not_found_in_trash` - Label used when no items are in the trash. Default is 'No posts found in Trash' /
+ * 'No pages found in Trash'.
+ * - `parent_item_colon` - Label used to prefix parents of hierarchical items. Not used on non-hierarchical
+ * post types. Default is 'Parent Page:'.
+ * - `all_items` - Label to signify all items in a submenu link. Default is 'All Posts' / 'All Pages'.
+ * - `archives` - Label for archives in nav menus. Default is 'Post Archives' / 'Page Archives'.
+ * - `attributes` - Label for the attributes meta box. Default is 'Post Attributes' / 'Page Attributes'.
+ * - `insert_into_item` - Label for the media frame button. Default is 'Insert into post' / 'Insert into page'.
+ * - `uploaded_to_this_item` - Label for the media frame filter. Default is 'Uploaded to this post' /
+ * 'Uploaded to this page'.
+ * - `featured_image` - Label for the Featured Image meta box title. Default is 'Featured Image'.
+ * - `set_featured_image` - Label for setting the featured image. Default is 'Set featured image'.
+ * - `remove_featured_image` - Label for removing the featured image. Default is 'Remove featured image'.
+ * - `use_featured_image` - Label in the media frame for using a featured image. Default is 'Use as featured image'.
+ * - `menu_name` - Label for the menu name. Default is the same as `name`.
+ * - `filter_items_list` - Label for the table views hidden heading. Default is 'Filter posts list' /
+ * 'Filter pages list'.
+ * - `items_list_navigation` - Label for the table pagination hidden heading. Default is 'Posts list navigation' /
+ * 'Pages list navigation'.
+ * - `items_list` - Label for the table hidden heading. Default is 'Posts list' / 'Pages list'.
+ *
+ * Above, the first default value is for non-hierarchical post types (like posts)
+ * and the second one is for hierarchical post types (like pages).
+ *
+ * Note: To set labels used in post type admin notices, see the {@see 'post_updated_messages'} filter.
+ *
+ * @since 3.0.0
+ * @since 4.3.0 Added the `featured_image`, `set_featured_image`, `remove_featured_image`,
+ * and `use_featured_image` labels.
+ * @since 4.4.0 Added the `insert_into_item`, `uploaded_to_this_item`, `filter_items_list`,
+ * `items_list_navigation`, and `items_list` labels.
+ * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
+ * @since 4.7.0 Added the `view_items` and `attributes` labels.
+ *
+ * @access private
+ *
+ * @param object|WP_Post_Type $post_type_object Post type object.
+ * @return object Object with all the labels as member variables.
+ */
+function get_post_type_labels( $post_type_object ) {
+ $nohier_vs_hier_defaults = array(
+ 'name' => array( _x('Posts', 'post type general name'), _x('Pages', 'post type general name') ),
+ 'singular_name' => array( _x('Post', 'post type singular name'), _x('Page', 'post type singular name') ),
+ 'add_new' => array( _x('Add New', 'post'), _x('Add New', 'page') ),
+ 'add_new_item' => array( __('Add New Post'), __('Add New Page') ),
+ 'edit_item' => array( __('Edit Post'), __('Edit Page') ),
+ 'new_item' => array( __('New Post'), __('New Page') ),
+ 'view_item' => array( __('View Post'), __('View Page') ),
+ 'view_items' => array( __('View Posts'), __('View Pages') ),
+ 'search_items' => array( __('Search Posts'), __('Search Pages') ),
+ 'not_found' => array( __('No posts found.'), __('No pages found.') ),
+ 'not_found_in_trash' => array( __('No posts found in Trash.'), __('No pages found in Trash.') ),
+ 'parent_item_colon' => array( null, __('Parent Page:') ),
+ 'all_items' => array( __( 'All Posts' ), __( 'All Pages' ) ),
+ 'archives' => array( __( 'Post Archives' ), __( 'Page Archives' ) ),
+ 'attributes' => array( __( 'Post Attributes' ), __( 'Page Attributes' ) ),
+ 'insert_into_item' => array( __( 'Insert into post' ), __( 'Insert into page' ) ),
+ 'uploaded_to_this_item' => array( __( 'Uploaded to this post' ), __( 'Uploaded to this page' ) ),
+ 'featured_image' => array( __( 'Featured Image' ), __( 'Featured Image' ) ),
+ 'set_featured_image' => array( __( 'Set featured image' ), __( 'Set featured image' ) ),
+ 'remove_featured_image' => array( __( 'Remove featured image' ), __( 'Remove featured image' ) ),
+ 'use_featured_image' => array( __( 'Use as featured image' ), __( 'Use as featured image' ) ),
+ 'filter_items_list' => array( __( 'Filter posts list' ), __( 'Filter pages list' ) ),
+ 'items_list_navigation' => array( __( 'Posts list navigation' ), __( 'Pages list navigation' ) ),
+ 'items_list' => array( __( 'Posts list' ), __( 'Pages list' ) ),
+ );
+ $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
+
+ $labels = _get_custom_object_labels( $post_type_object, $nohier_vs_hier_defaults );
+
+ $post_type = $post_type_object->name;
+
+ $default_labels = clone $labels;
+
+ /**
+ * Filters the labels of a specific post type.
+ *
+ * The dynamic portion of the hook name, `$post_type`, refers to
+ * the post type slug.
+ *
+ * @since 3.5.0
+ *
+ * @see get_post_type_labels() for the full list of labels.
+ *
+ * @param object $labels Object with labels for the post type as member variables.
+ */
+ $labels = apply_filters( "post_type_labels_{$post_type}", $labels );
+
+ // Ensure that the filtered labels contain all required default values.
+ $labels = (object) array_merge( (array) $default_labels, (array) $labels );
+
+ return $labels;
+}
+
+/**
+ * Build an object with custom-something object (post type, taxonomy) labels
+ * out of a custom-something object
+ *
+ * @since 3.0.0
+ * @access private
+ *
+ * @param object $object A custom-something object.
+ * @param array $nohier_vs_hier_defaults Hierarchical vs non-hierarchical default labels.
+ * @return object Object containing labels for the given custom-something object.
+ */
+function _get_custom_object_labels( $object, $nohier_vs_hier_defaults ) {
+ $object->labels = (array) $object->labels;
+
+ if ( isset( $object->label ) && empty( $object->labels['name'] ) )
+ $object->labels['name'] = $object->label;
+
+ if ( !isset( $object->labels['singular_name'] ) && isset( $object->labels['name'] ) )
+ $object->labels['singular_name'] = $object->labels['name'];
+
+ if ( ! isset( $object->labels['name_admin_bar'] ) )
+ $object->labels['name_admin_bar'] = isset( $object->labels['singular_name'] ) ? $object->labels['singular_name'] : $object->name;
+
+ if ( !isset( $object->labels['menu_name'] ) && isset( $object->labels['name'] ) )
+ $object->labels['menu_name'] = $object->labels['name'];
+
+ if ( !isset( $object->labels['all_items'] ) && isset( $object->labels['menu_name'] ) )
+ $object->labels['all_items'] = $object->labels['menu_name'];
+
+ if ( !isset( $object->labels['archives'] ) && isset( $object->labels['all_items'] ) ) {
+ $object->labels['archives'] = $object->labels['all_items'];
+ }
+
+ $defaults = array();
+ foreach ( $nohier_vs_hier_defaults as $key => $value ) {
+ $defaults[$key] = $object->hierarchical ? $value[1] : $value[0];
+ }
+ $labels = array_merge( $defaults, $object->labels );
+ $object->labels = (object) $object->labels;
+
+ return (object) $labels;
+}
+
+/**
+ * Add submenus for post types.
+ *
+ * @access private
+ * @since 3.1.0
+ */
+function _add_post_type_submenus() {
+ foreach ( get_post_types( array( 'show_ui' => true ) ) as $ptype ) {
+ $ptype_obj = get_post_type_object( $ptype );
+ // Sub-menus only.
+ if ( ! $ptype_obj->show_in_menu || $ptype_obj->show_in_menu === true )
+ continue;
+ add_submenu_page( $ptype_obj->show_in_menu, $ptype_obj->labels->name, $ptype_obj->labels->all_items, $ptype_obj->cap->edit_posts, "edit.php?post_type=$ptype" );
+ }
+}
+
+/**
+ * Register support of certain features for a post type.
+ *
+ * All core features are directly associated with a functional area of the edit
+ * screen, such as the editor or a meta box. Features include: 'title', 'editor',
+ * 'comments', 'revisions', 'trackbacks', 'author', 'excerpt', 'page-attributes',
+ * 'thumbnail', 'custom-fields', and 'post-formats'.
+ *
+ * Additionally, the 'revisions' feature dictates whether the post type will
+ * store revisions, and the 'comments' feature dictates whether the comments
+ * count will show on the edit screen.
+ *
+ * @since 3.0.0
+ *
+ * @global array $_wp_post_type_features
+ *
+ * @param string $post_type The post type for which to add the feature.
+ * @param string|array $feature The feature being added, accepts an array of
+ * feature strings or a single string.
+ */
+function add_post_type_support( $post_type, $feature ) {
+ global $_wp_post_type_features;
+
+ $features = (array) $feature;
+ foreach ($features as $feature) {
+ if ( func_num_args() == 2 )
+ $_wp_post_type_features[$post_type][$feature] = true;
+ else
+ $_wp_post_type_features[$post_type][$feature] = array_slice( func_get_args(), 2 );
+ }
+}
+
+/**
+ * Remove support for a feature from a post type.
+ *
+ * @since 3.0.0
+ *
+ * @global array $_wp_post_type_features
+ *
+ * @param string $post_type The post type for which to remove the feature.
+ * @param string $feature The feature being removed.
+ */
+function remove_post_type_support( $post_type, $feature ) {
+ global $_wp_post_type_features;
+
+ unset( $_wp_post_type_features[ $post_type ][ $feature ] );
+}
+
+/**
+ * Get all the post type features
+ *
+ * @since 3.4.0
+ *
+ * @global array $_wp_post_type_features
+ *
+ * @param string $post_type The post type.
+ * @return array Post type supports list.
+ */
+function get_all_post_type_supports( $post_type ) {
+ global $_wp_post_type_features;
+
+ if ( isset( $_wp_post_type_features[$post_type] ) )
+ return $_wp_post_type_features[$post_type];
+
+ return array();
+}
+
+/**
+ * Check a post type's support for a given feature.
+ *
+ * @since 3.0.0
+ *
+ * @global array $_wp_post_type_features
+ *
+ * @param string $post_type The post type being checked.
+ * @param string $feature The feature being checked.
+ * @return bool Whether the post type supports the given feature.
+ */
+function post_type_supports( $post_type, $feature ) {
+ global $_wp_post_type_features;
+
+ return ( isset( $_wp_post_type_features[$post_type][$feature] ) );
+}
+
+/**
+ * Retrieves a list of post type names that support a specific feature.
+ *
+ * @since 4.5.0
+ *
+ * @global array $_wp_post_type_features Post type features
+ *
+ * @param array|string $feature Single feature or an array of features the post types should support.
+ * @param string $operator Optional. The logical operation to perform. 'or' means
+ * only one element from the array needs to match; 'and'
+ * means all elements must match; 'not' means no elements may
+ * match. Default 'and'.
+ * @return array A list of post type names.
+ */
+function get_post_types_by_support( $feature, $operator = 'and' ) {
+ global $_wp_post_type_features;
+
+ $features = array_fill_keys( (array) $feature, true );
+
+ return array_keys( wp_filter_object_list( $_wp_post_type_features, $features, $operator ) );
+}
+
+/**
+ * Update the post type for the post ID.
+ *
+ * The page or post cache will be cleaned for the post ID.
+ *
+ * @since 2.5.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param int $post_id Optional. Post ID to change post type. Default 0.
+ * @param string $post_type Optional. Post type. Accepts 'post' or 'page' to
+ * name a few. Default 'post'.
+ * @return int|false Amount of rows changed. Should be 1 for success and 0 for failure.
+ */
+function set_post_type( $post_id = 0, $post_type = 'post' ) {
+ global $wpdb;
+
+ $post_type = sanitize_post_field('post_type', $post_type, $post_id, 'db');
+ $return = $wpdb->update( $wpdb->posts, array('post_type' => $post_type), array('ID' => $post_id) );
+
+ clean_post_cache( $post_id );
+
+ return $return;
+}
+
+/**
+ * Determines whether a post type is considered "viewable".
+ *
+ * For built-in post types such as posts and pages, the 'public' value will be evaluated.
+ * For all others, the 'publicly_queryable' value will be used.
+ *
+ * @since 4.4.0
+ * @since 4.5.0 Added the ability to pass a post type name in addition to object.
+ * @since 4.6.0 Converted the `$post_type` parameter to accept a WP_Post_Type object.
+ *
+ * @param string|WP_Post_Type $post_type Post type name or object.
+ * @return bool Whether the post type should be considered viewable.
+ */
+function is_post_type_viewable( $post_type ) {
+ if ( is_scalar( $post_type ) ) {
+ $post_type = get_post_type_object( $post_type );
+ if ( ! $post_type ) {
+ return false;
+ }
+ }
+
+ return $post_type->publicly_queryable || ( $post_type->_builtin && $post_type->public );
+}
+
+/**
+ * Retrieve list of latest posts or posts matching criteria.
+ *
+ * The defaults are as follows:
+ *
+ * @since 1.2.0
+ *
+ * @see WP_Query::parse_query()
+ *
+ * @param array $args {
+ * Optional. Arguments to retrieve posts. See WP_Query::parse_query() for all
+ * available arguments.
+ *
+ * @type int $numberposts Total number of posts to retrieve. Is an alias of $posts_per_page
+ * in WP_Query. Accepts -1 for all. Default 5.
+ * @type int|string $category Category ID or comma-separated list of IDs (this or any children).
+ * Is an alias of $cat in WP_Query. Default 0.
+ * @type array $include An array of post IDs to retrieve, sticky posts will be included.
+ * Is an alias of $post__in in WP_Query. Default empty array.
+ * @type array $exclude An array of post IDs not to retrieve. Default empty array.
+ * @type bool $suppress_filters Whether to suppress filters. Default true.
+ * }
+ * @return array List of posts.
+ */
+function get_posts( $args = null ) {
+ $defaults = array(
+ 'numberposts' => 5,
+ 'category' => 0, 'orderby' => 'date',
+ 'order' => 'DESC', 'include' => array(),
+ 'exclude' => array(), 'meta_key' => '',
+ 'meta_value' =>'', 'post_type' => 'post',
+ 'suppress_filters' => true
+ );
+
+ $r = wp_parse_args( $args, $defaults );
+ if ( empty( $r['post_status'] ) )
+ $r['post_status'] = ( 'attachment' == $r['post_type'] ) ? 'inherit' : 'publish';
+ if ( ! empty($r['numberposts']) && empty($r['posts_per_page']) )
+ $r['posts_per_page'] = $r['numberposts'];
+ if ( ! empty($r['category']) )
+ $r['cat'] = $r['category'];
+ if ( ! empty($r['include']) ) {
+ $incposts = wp_parse_id_list( $r['include'] );
+ $r['posts_per_page'] = count($incposts); // only the number of posts included
+ $r['post__in'] = $incposts;
+ } elseif ( ! empty($r['exclude']) )
+ $r['post__not_in'] = wp_parse_id_list( $r['exclude'] );
+
+ $r['ignore_sticky_posts'] = true;
+ $r['no_found_rows'] = true;
+
+ $get_posts = new WP_Query;
+ return $get_posts->query($r);
+
+}
+
+//
+// Post meta functions
+//
+
+/**
+ * Add meta data field to a post.
+ *
+ * Post meta data is called "Custom Fields" on the Administration Screen.
+ *
+ * @since 1.5.0
+ *
+ * @param int $post_id Post ID.
+ * @param string $meta_key Metadata name.
+ * @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
+ * @param bool $unique Optional. Whether the same key should not be added.
+ * Default false.
+ * @return int|false Meta ID on success, false on failure.
+ */
+function add_post_meta( $post_id, $meta_key, $meta_value, $unique = false ) {
+ // Make sure meta is added to the post, not a revision.
+ if ( $the_post = wp_is_post_revision($post_id) )
+ $post_id = $the_post;
+
+ return add_metadata('post', $post_id, $meta_key, $meta_value, $unique);
+}
+
+/**
+ * Remove metadata matching criteria from a post.
+ *
+ * You can match based on the key, or key and value. Removing based on key and
+ * value, will keep from removing duplicate metadata with the same key. It also
+ * allows removing all metadata matching key, if needed.
+ *
+ * @since 1.5.0
+ *
+ * @param int $post_id Post ID.
+ * @param string $meta_key Metadata name.
+ * @param mixed $meta_value Optional. Metadata value. Must be serializable if
+ * non-scalar. Default empty.
+ * @return bool True on success, false on failure.
+ */
+function delete_post_meta( $post_id, $meta_key, $meta_value = '' ) {
+ // Make sure meta is added to the post, not a revision.
+ if ( $the_post = wp_is_post_revision($post_id) )
+ $post_id = $the_post;
+
+ return delete_metadata('post', $post_id, $meta_key, $meta_value);
+}
+
+/**
+ * Retrieve post meta field for a post.
+ *
+ * @since 1.5.0
+ *
+ * @param int $post_id Post ID.
+ * @param string $key Optional. The meta key to retrieve. By default, returns
+ * data for all keys. Default empty.
+ * @param bool $single Optional. Whether to return a single value. Default false.
+ * @return mixed Will be an array if $single is false. Will be value of meta data
+ * field if $single is true.
+ */
+function get_post_meta( $post_id, $key = '', $single = false ) {
+ return get_metadata('post', $post_id, $key, $single);
+}
+
+/**
+ * Update post meta field based on post ID.
+ *
+ * Use the $prev_value parameter to differentiate between meta fields with the
+ * same key and post ID.
+ *
+ * If the meta field for the post does not exist, it will be added.
+ *
+ * @since 1.5.0
+ *
+ * @param int $post_id Post ID.
+ * @param string $meta_key Metadata key.
+ * @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
+ * @param mixed $prev_value Optional. Previous value to check before removing.
+ * Default empty.
+ * @return int|bool Meta ID if the key didn't exist, true on successful update,
+ * false on failure.
+ */
+function update_post_meta( $post_id, $meta_key, $meta_value, $prev_value = '' ) {
+ // Make sure meta is added to the post, not a revision.
+ if ( $the_post = wp_is_post_revision($post_id) )
+ $post_id = $the_post;
+
+ return update_metadata('post', $post_id, $meta_key, $meta_value, $prev_value);
+}
+
+/**
+ * Delete everything from post meta matching meta key.
+ *
+ * @since 2.3.0
+ *
+ * @param string $post_meta_key Key to search for when deleting.
+ * @return bool Whether the post meta key was deleted from the database.
+ */
+function delete_post_meta_by_key( $post_meta_key ) {
+ return delete_metadata( 'post', null, $post_meta_key, '', true );
+}
+
+/**
+ * Retrieve post meta fields, based on post ID.
+ *
+ * The post meta fields are retrieved from the cache where possible,
+ * so the function is optimized to be called more than once.
+ *
+ * @since 1.2.0
+ *
+ * @param int $post_id Optional. Post ID. Default is ID of the global $post.
+ * @return array Post meta for the given post.
+ */
+function get_post_custom( $post_id = 0 ) {
+ $post_id = absint( $post_id );
+ if ( ! $post_id )
+ $post_id = get_the_ID();
+
+ return get_post_meta( $post_id );
+}
+
+/**
+ * Retrieve meta field names for a post.
+ *
+ * If there are no meta fields, then nothing (null) will be returned.
+ *
+ * @since 1.2.0
+ *
+ * @param int $post_id Optional. Post ID. Default is ID of the global $post.
+ * @return array|void Array of the keys, if 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
+ *
+ * @param string $key Optional. Meta field key. Default empty.
+ * @param int $post_id Optional. Post ID. Default is ID of the global $post.
+ * @return array|null Meta field values.
+ */
+function get_post_custom_values( $key = '', $post_id = 0 ) {
+ if ( !$key )
+ return null;
+
+ $custom = get_post_custom($post_id);
+
+ return isset($custom[$key]) ? $custom[$key] : null;
+}
+
+/**
+ * Check if post is sticky.
+ *
+ * Sticky posts should remain at the top of The Loop. If the post ID is not
+ * given, then The Loop ID for the current post will be used.
+ *
+ * @since 2.7.0
+ *
+ * @param int $post_id Optional. Post ID. Default is ID of the global $post.
+ * @return bool Whether post is sticky.
+ */
+function is_sticky( $post_id = 0 ) {
+ $post_id = absint( $post_id );
+
+ if ( ! $post_id )
+ $post_id = get_the_ID();
+
+ $stickies = get_option( 'sticky_posts' );
+
+ if ( ! is_array( $stickies ) )
+ return false;
+
+ if ( in_array( $post_id, $stickies ) )
+ return true;
+
+ return false;
+}
+
+/**
+ * Sanitize every post field.
+ *
+ * If the context is 'raw', then the post object or array will get minimal
+ * sanitization of the integer fields.
+ *
+ * @since 2.3.0
+ *
+ * @see sanitize_post_field()
+ *
+ * @param object|WP_Post|array $post The Post Object or Array
+ * @param string $context Optional. How to sanitize post fields.
+ * Accepts 'raw', 'edit', 'db', or 'display'.
+ * Default 'display'.
+ * @return object|WP_Post|array The now sanitized Post Object or Array (will be the
+ * same type as $post).
+ */
+function sanitize_post( $post, $context = 'display' ) {
+ if ( is_object($post) ) {
+ // Check if post already filtered for this context.
+ if ( isset($post->filter) && $context == $post->filter )
+ return $post;
+ if ( !isset($post->ID) )
+ $post->ID = 0;
+ foreach ( array_keys(get_object_vars($post)) as $field )
+ $post->$field = sanitize_post_field($field, $post->$field, $post->ID, $context);
+ $post->filter = $context;
+ } elseif ( is_array( $post ) ) {
+ // Check if post already filtered for this context.
+ if ( isset($post['filter']) && $context == $post['filter'] )
+ return $post;
+ if ( !isset($post['ID']) )
+ $post['ID'] = 0;
+ foreach ( array_keys($post) as $field )
+ $post[$field] = sanitize_post_field($field, $post[$field], $post['ID'], $context);
+ $post['filter'] = $context;
+ }
+ return $post;
+}
+
+/**
+ * Sanitize post field based on context.
+ *
+ * Possible context values are: 'raw', 'edit', 'db', 'display', 'attribute' and
+ * 'js'. The 'display' context is used by default. 'attribute' and 'js' contexts
+ * are treated like 'display' when calling filters.
+ *
+ * @since 2.3.0
+ * @since 4.4.0 Like `sanitize_post()`, `$context` defaults to 'display'.
+ *
+ * @param string $field The Post Object field name.
+ * @param mixed $value The Post Object value.
+ * @param int $post_id Post ID.
+ * @param string $context Optional. How to sanitize post fields. Looks for 'raw', 'edit',
+ * 'db', 'display', 'attribute' and 'js'. Default 'display'.
+ * @return mixed Sanitized value.
+ */
+function sanitize_post_field( $field, $value, $post_id, $context = 'display' ) {
+ $int_fields = array('ID', 'post_parent', 'menu_order');
+ if ( in_array($field, $int_fields) )
+ $value = (int) $value;
+
+ // Fields which contain arrays of integers.
+ $array_int_fields = array( 'ancestors' );
+ if ( in_array($field, $array_int_fields) ) {
+ $value = array_map( 'absint', $value);
+ return $value;
+ }
+
+ if ( 'raw' == $context )
+ return $value;
+
+ $prefixed = false;
+ if ( false !== strpos($field, 'post_') ) {
+ $prefixed = true;
+ $field_no_prefix = str_replace('post_', '', $field);
+ }
+
+ if ( 'edit' == $context ) {
+ $format_to_edit = array('post_content', 'post_excerpt', 'post_title', 'post_password');
+
+ if ( $prefixed ) {
+
+ /**
+ * Filters the value of a specific post field to edit.
+ *
+ * The dynamic portion of the hook name, `$field`, refers to the post
+ * field name.
+ *
+ * @since 2.3.0
+ *
+ * @param mixed $value Value of the post field.
+ * @param int $post_id Post ID.
+ */
+ $value = apply_filters( "edit_{$field}", $value, $post_id );
+
+ /**
+ * Filters the value of a specific post field to edit.
+ *
+ * The dynamic portion of the hook name, `$field_no_prefix`, refers to
+ * the post field name.
+ *
+ * @since 2.3.0
+ *
+ * @param mixed $value Value of the post field.
+ * @param int $post_id Post ID.
+ */
+ $value = apply_filters( "{$field_no_prefix}_edit_pre", $value, $post_id );
+ } else {
+ $value = apply_filters( "edit_post_{$field}", $value, $post_id );
+ }
+
+ if ( in_array($field, $format_to_edit) ) {
+ if ( 'post_content' == $field )
+ $value = format_to_edit($value, user_can_richedit());
+ else
+ $value = format_to_edit($value);
+ } else {
+ $value = esc_attr($value);
+ }
+ } elseif ( 'db' == $context ) {
+ if ( $prefixed ) {
+
+ /**
+ * Filters the value of a specific post field before saving.
+ *
+ * The dynamic portion of the hook name, `$field`, refers to the post
+ * field name.
+ *
+ * @since 2.3.0
+ *
+ * @param mixed $value Value of the post field.
+ */
+ $value = apply_filters( "pre_{$field}", $value );
+
+ /**
+ * Filters the value of a specific field before saving.
+ *
+ * The dynamic portion of the hook name, `$field_no_prefix`, refers
+ * to the post field name.
+ *
+ * @since 2.3.0
+ *
+ * @param mixed $value Value of the post field.
+ */
+ $value = apply_filters( "{$field_no_prefix}_save_pre", $value );
+ } else {
+ $value = apply_filters( "pre_post_{$field}", $value );
+
+ /**
+ * Filters the value of a specific post field before saving.
+ *
+ * The dynamic portion of the hook name, `$field`, refers to the post
+ * field name.
+ *
+ * @since 2.3.0
+ *
+ * @param mixed $value Value of the post field.
+ */
+ $value = apply_filters( "{$field}_pre", $value );
+ }
+ } else {
+
+ // Use display filters by default.
+ if ( $prefixed ) {
+
+ /**
+ * Filters the value of a specific post field for display.
+ *
+ * The dynamic portion of the hook name, `$field`, refers to the post
+ * field name.
+ *
+ * @since 2.3.0
+ *
+ * @param mixed $value Value of the prefixed post field.
+ * @param int $post_id Post ID.
+ * @param string $context Context for how to sanitize the field. Possible
+ * values include 'raw', 'edit', 'db', 'display',
+ * 'attribute' and 'js'.
+ */
+ $value = apply_filters( $field, $value, $post_id, $context );
+ } else {
+ $value = apply_filters( "post_{$field}", $value, $post_id, $context );
+ }
+
+ if ( 'attribute' == $context ) {
+ $value = esc_attr( $value );
+ } elseif ( 'js' == $context ) {
+ $value = esc_js( $value );
+ }
+ }
+
+ return $value;
+}
+
+/**
+ * Make a post sticky.
+ *
+ * Sticky posts should be displayed at the top of the front page.
+ *
+ * @since 2.7.0
+ *
+ * @param int $post_id Post ID.
+ */
+function stick_post( $post_id ) {
+ $stickies = get_option('sticky_posts');
+
+ if ( !is_array($stickies) )
+ $stickies = array($post_id);
+
+ if ( ! in_array($post_id, $stickies) )
+ $stickies[] = $post_id;
+
+ $updated = update_option( 'sticky_posts', $stickies );
+
+ if ( $updated ) {
+ /**
+ * Fires once a post has been added to the sticky list.
+ *
+ * @since 4.6.0
+ *
+ * @param int $post_id ID of the post that was stuck.
+ */
+ do_action( 'post_stuck', $post_id );
+ }
+}
+
+/**
+ * Un-stick 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);
+
+ $updated = update_option( 'sticky_posts', $stickies );
+
+ if ( $updated ) {
+ /**
+ * Fires once a post has been removed from the sticky list.
+ *
+ * @since 4.6.0
+ *
+ * @param int $post_id ID of the post that was unstuck.
+ */
+ do_action( 'post_unstuck', $post_id );
+ }
+}
+
+/**
+ * Return the cache key for wp_count_posts() based on the passed arguments.
+ *
+ * @since 3.9.0
+ *
+ * @param string $type Optional. Post type to retrieve count Default 'post'.
+ * @param string $perm Optional. 'readable' or empty. Default empty.
+ * @return string The cache key.
+ */
+function _count_posts_cache_key( $type = 'post', $perm = '' ) {
+ $cache_key = 'posts-' . $type;
+ if ( 'readable' == $perm && is_user_logged_in() ) {
+ $post_type_object = get_post_type_object( $type );
+ if ( $post_type_object && ! current_user_can( $post_type_object->cap->read_private_posts ) ) {
+ $cache_key .= '_' . $perm . '_' . get_current_user_id();
+ }
+ }
+ return $cache_key;
+}
+
+/**
+ * Count number of posts of a post type and if user has permissions to view.
+ *
+ * This function provides an efficient method of finding the amount of post's
+ * type a blog has. Another method is to count the amount of items in
+ * get_posts(), but that method has a lot of overhead with doing so. Therefore,
+ * when developing for 2.5+, use this function instead.
+ *
+ * The $perm parameter checks for 'readable' value and if the user can read
+ * private posts, it will display that for the user that is signed in.
+ *
+ * @since 2.5.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param string $type Optional. Post type to retrieve count. Default 'post'.
+ * @param string $perm Optional. 'readable' or empty. Default empty.
+ * @return object Number of posts for each status.
+ */
+function wp_count_posts( $type = 'post', $perm = '' ) {
+ global $wpdb;
+
+ if ( ! post_type_exists( $type ) )
+ return new stdClass;
+
+ $cache_key = _count_posts_cache_key( $type, $perm );
+
+ $counts = wp_cache_get( $cache_key, 'counts' );
+ if ( false !== $counts ) {
+ /** This filter is documented in wp-includes/post.php */
+ return apply_filters( 'wp_count_posts', $counts, $type, $perm );
+ }
+
+ $query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s";
+ if ( 'readable' == $perm && is_user_logged_in() ) {
+ $post_type_object = get_post_type_object($type);
+ if ( ! current_user_can( $post_type_object->cap->read_private_posts ) ) {
+ $query .= $wpdb->prepare( " AND (post_status != 'private' OR ( post_author = %d AND post_status = 'private' ))",
+ get_current_user_id()
+ );
+ }
+ }
+ $query .= ' GROUP BY post_status';
+
+ $results = (array) $wpdb->get_results( $wpdb->prepare( $query, $type ), ARRAY_A );
+ $counts = array_fill_keys( get_post_stati(), 0 );
+
+ foreach ( $results as $row ) {
+ $counts[ $row['post_status'] ] = $row['num_posts'];
+ }
+
+ $counts = (object) $counts;
+ wp_cache_set( $cache_key, $counts, 'counts' );
+
+ /**
+ * Modify returned post counts by status for the current post type.
+ *
+ * @since 3.7.0
+ *
+ * @param object $counts An object containing the current post_type's post
+ * counts by status.
+ * @param string $type Post type.
+ * @param string $perm The permission to determine if the posts are 'readable'
+ * by the current user.
+ */
+ return apply_filters( 'wp_count_posts', $counts, $type, $perm );
+}
+
+/**
+ * Count number of attachments for the mime type(s).
+ *
+ * If you set the optional mime_type parameter, then an array will still be
+ * returned, but will only have the item you are looking for. It does not give
+ * you the number of attachments that are children of a post. You can get that
+ * by counting the number of children that post has.
+ *
+ * @since 2.5.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param string|array $mime_type Optional. Array or comma-separated list of
+ * MIME patterns. Default empty.
+ * @return object An object containing the attachment counts by mime type.
+ */
+function wp_count_attachments( $mime_type = '' ) {
+ global $wpdb;
+
+ $and = wp_post_mime_type_where( $mime_type );
+ $count = $wpdb->get_results( "SELECT post_mime_type, COUNT( * ) AS num_posts FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' $and GROUP BY post_mime_type", ARRAY_A );
+
+ $counts = array();
+ foreach ( (array) $count as $row ) {
+ $counts[ $row['post_mime_type'] ] = $row['num_posts'];
+ }
+ $counts['trash'] = $wpdb->get_var( "SELECT COUNT( * ) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status = 'trash' $and");
+
+ /**
+ * Modify returned attachment counts by mime type.
+ *
+ * @since 3.7.0
+ *
+ * @param object $counts An object containing the attachment counts by
+ * mime type.
+ * @param string $mime_type The mime type pattern used to filter the attachments
+ * counted.
+ */
+ return apply_filters( 'wp_count_attachments', (object) $counts, $mime_type );
+}
+
+/**
+ * Get default post mime types.
+ *
+ * @since 2.9.0
+ *
+ * @return array List of post mime types.
+ */
+function get_post_mime_types() {
+ $post_mime_types = array( // array( adj, noun )
+ 'image' => array(__('Images'), __('Manage Images'), _n_noop('Image <span class="count">(%s)</span>', 'Images <span class="count">(%s)</span>')),
+ 'audio' => array(__('Audio'), __('Manage Audio'), _n_noop('Audio <span class="count">(%s)</span>', 'Audio <span class="count">(%s)</span>')),
+ 'video' => array(__('Video'), __('Manage Video'), _n_noop('Video <span class="count">(%s)</span>', 'Video <span class="count">(%s)</span>')),
+ );
+
+ /**
+ * Filters the default list of post mime types.
+ *
+ * @since 2.5.0
+ *
+ * @param array $post_mime_types Default list of post mime types.
+ */
+ return apply_filters( 'post_mime_types', $post_mime_types );
+}
+
+/**
+ * Check a MIME-Type against a list.
+ *
+ * If the wildcard_mime_types parameter is a string, it must be comma separated
+ * list. If the real_mime_types is a string, it is also comma separated to
+ * create the list.
+ *
+ * @since 2.5.0
+ *
+ * @param string|array $wildcard_mime_types Mime types, e.g. audio/mpeg or image (same as image/*)
+ * or flash (same as *flash*).
+ * @param string|array $real_mime_types Real 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 ) );
+ }
+
+ $patternses = array();
+ $wild = '[-._a-z0-9]*';
+
+ foreach ( (array) $wildcard_mime_types as $type ) {
+ $mimes = array_map( 'trim', explode( ',', $type ) );
+ foreach ( $mimes as $mime ) {
+ $regex = str_replace( '__wildcard__', $wild, preg_quote( str_replace( '*', '__wildcard__', $mime ) ) );
+ $patternses[][$type] = "^$regex$";
+ if ( false === strpos( $mime, '/' ) ) {
+ $patternses[][$type] = "^$regex/";
+ $patternses[][$type] = $regex;
+ }
+ }
+ }
+ asort( $patternses );
+
+ foreach ( $patternses as $patterns ) {
+ foreach ( $patterns as $type => $pattern ) {
+ foreach ( (array) $real_mime_types as $real ) {
+ if ( preg_match( "#$pattern#", $real ) && ( empty( $matches[$type] ) || false === array_search( $real, $matches[$type] ) ) ) {
+ $matches[$type][] = $real;
+ }
+ }
+ }
+ }
+ return $matches;
+}
+
+/**
+ * Convert MIME types into SQL.
+ *
+ * @since 2.5.0
+ *
+ * @param string|array $post_mime_types List of mime types or comma separated string
+ * of mime types.
+ * @param string $table_alias Optional. Specify a table alias, if needed.
+ * Default empty.
+ * @return string The SQL AND clause for mime searching.
+ */
+function wp_post_mime_type_where( $post_mime_types, $table_alias = '' ) {
+ $where = '';
+ $wildcards = array('', '%', '%/%');
+ if ( is_string($post_mime_types) )
+ $post_mime_types = array_map('trim', explode(',', $post_mime_types));
+
+ $wheres = array();
+
+ foreach ( (array) $post_mime_types as $mime_type ) {
+ $mime_type = preg_replace('/\s/', '', $mime_type);
+ $slashpos = strpos($mime_type, '/');
+ if ( false !== $slashpos ) {
+ $mime_group = preg_replace('/[^-*.a-zA-Z0-9]/', '', substr($mime_type, 0, $slashpos));
+ $mime_subgroup = preg_replace('/[^-*.+a-zA-Z0-9]/', '', substr($mime_type, $slashpos + 1));
+ if ( empty($mime_subgroup) )
+ $mime_subgroup = '*';
+ else
+ $mime_subgroup = str_replace('/', '', $mime_subgroup);
+ $mime_pattern = "$mime_group/$mime_subgroup";
+ } else {
+ $mime_pattern = preg_replace('/[^-*.a-zA-Z0-9]/', '', $mime_type);
+ if ( false === strpos($mime_pattern, '*') )
+ $mime_pattern .= '/*';
+ }
+
+ $mime_pattern = preg_replace('/\*+/', '%', $mime_pattern);
+
+ if ( in_array( $mime_type, $wildcards ) )
+ return '';
+
+ if ( false !== strpos($mime_pattern, '%') )
+ $wheres[] = empty($table_alias) ? "post_mime_type LIKE '$mime_pattern'" : "$table_alias.post_mime_type LIKE '$mime_pattern'";
+ else
+ $wheres[] = empty($table_alias) ? "post_mime_type = '$mime_pattern'" : "$table_alias.post_mime_type = '$mime_pattern'";
+ }
+ if ( !empty($wheres) )
+ $where = ' AND (' . join(' OR ', $wheres) . ') ';
+ return $where;
+}
+
+/**
+ * Trash or delete a post or page.
+ *
+ * When the post and page is permanently deleted, everything that is tied to
+ * it is deleted also. This includes comments, post meta fields, and terms
+ * associated with the post.
+ *
+ * The post or page is moved to trash instead of permanently deleted unless
+ * trash is disabled, item is already in the trash, or $force_delete is true.
+ *
+ * @since 1.0.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ * @see wp_delete_attachment()
+ * @see wp_trash_post()
+ *
+ * @param int $postid Optional. Post ID. Default 0.
+ * @param bool $force_delete Optional. Whether to bypass trash and force deletion.
+ * Default false.
+ * @return array|false|WP_Post False on failure.
+ */
+function wp_delete_post( $postid = 0, $force_delete = false ) {
+ global $wpdb;
+
+ if ( !$post = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $postid)) )
+ return $post;
+
+ if ( !$force_delete && ( $post->post_type == 'post' || $post->post_type == 'page') && get_post_status( $postid ) != 'trash' && EMPTY_TRASH_DAYS )
+ return wp_trash_post( $postid );
+
+ if ( $post->post_type == 'attachment' )
+ return wp_delete_attachment( $postid, $force_delete );
+
+ /**
+ * Filters whether a post deletion should take place.
+ *
+ * @since 4.4.0
+ *
+ * @param bool $delete Whether to go forward with deletion.
+ * @param WP_Post $post Post object.
+ * @param bool $force_delete Whether to bypass the trash.
+ */
+ $check = apply_filters( 'pre_delete_post', null, $post, $force_delete );
+ if ( null !== $check ) {
+ return $check;
+ }
+
+ /**
+ * Fires before a post is deleted, at the start of wp_delete_post().
+ *
+ * @since 3.2.0
+ *
+ * @see wp_delete_post()
+ *
+ * @param int $postid Post ID.
+ */
+ do_action( 'before_delete_post', $postid );
+
+ delete_post_meta($postid,'_wp_trash_meta_status');
+ delete_post_meta($postid,'_wp_trash_meta_time');
+
+ wp_delete_object_term_relationships($postid, get_object_taxonomies($post->post_type));
+
+ $parent_data = array( 'post_parent' => $post->post_parent );
+ $parent_where = array( 'post_parent' => $postid );
+
+ if ( is_post_type_hierarchical( $post->post_type ) ) {
+ // Point children of this page to its parent, also clean the cache of affected children.
+ $children_query = $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_parent = %d AND post_type = %s", $postid, $post->post_type );
+ $children = $wpdb->get_results( $children_query );
+ if ( $children ) {
+ $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => $post->post_type ) );
+ }
+ }
+
+ // Do raw query. wp_get_post_revisions() is filtered.
+ $revision_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'revision'", $postid ) );
+ // Use wp_delete_post (via wp_delete_post_revision) again. Ensures any meta/misplaced data gets cleaned up.
+ foreach ( $revision_ids as $revision_id )
+ wp_delete_post_revision( $revision_id );
+
+ // Point all attachments to this post up one level.
+ $wpdb->update( $wpdb->posts, $parent_data, $parent_where + array( 'post_type' => 'attachment' ) );
+
+ wp_defer_comment_counting( true );
+
+ $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $postid ));
+ foreach ( $comment_ids as $comment_id ) {
+ wp_delete_comment( $comment_id, true );
+ }
+
+ wp_defer_comment_counting( false );
+
+ $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $postid ));
+ foreach ( $post_meta_ids as $mid )
+ delete_metadata_by_mid( 'post', $mid );
+
+ /**
+ * Fires immediately before a post is deleted from the database.
+ *
+ * @since 1.2.0
+ *
+ * @param int $postid Post ID.
+ */
+ do_action( 'delete_post', $postid );
+ $result = $wpdb->delete( $wpdb->posts, array( 'ID' => $postid ) );
+ if ( ! $result ) {
+ return false;
+ }
+
+ /**
+ * Fires immediately after a post is deleted from the database.
+ *
+ * @since 2.2.0
+ *
+ * @param int $postid Post ID.
+ */
+ do_action( 'deleted_post', $postid );
+
+ clean_post_cache( $post );
+
+ if ( is_post_type_hierarchical( $post->post_type ) && $children ) {
+ foreach ( $children as $child )
+ clean_post_cache( $child );
+ }
+
+ wp_clear_scheduled_hook('publish_future_post', array( $postid ) );
+
+ /**
+ * Fires after a post is deleted, at the conclusion of wp_delete_post().
+ *
+ * @since 3.2.0
+ *
+ * @see wp_delete_post()
+ *
+ * @param int $postid Post ID.
+ */
+ do_action( 'after_delete_post', $postid );
+
+ return $post;
+}
+
+/**
+ * Reset the page_on_front, show_on_front, and page_for_post settings when
+ * a linked page is deleted or trashed.
+ *
+ * Also ensures the post is no longer sticky.
+ *
+ * @since 3.7.0
+ * @access private
+ *
+ * @param int $post_id Post ID.
+ */
+function _reset_front_page_settings_for_post( $post_id ) {
+ $post = get_post( $post_id );
+ if ( 'page' == $post->post_type ) {
+ /*
+ * If the page is defined in option page_on_front or post_for_posts,
+ * adjust the corresponding options.
+ */
+ if ( get_option( 'page_on_front' ) == $post->ID ) {
+ update_option( 'show_on_front', 'posts' );
+ update_option( 'page_on_front', 0 );
+ }
+ if ( get_option( 'page_for_posts' ) == $post->ID ) {
+ delete_option( 'page_for_posts', 0 );
+ }
+ }
+ unstick_post( $post->ID );
+}
+
+/**
+ * Move a post or page to the Trash
+ *
+ * If trash is disabled, the post or page is permanently deleted.
+ *
+ * @since 2.9.0
+ *
+ * @see wp_delete_post()
+ *
+ * @param int $post_id Optional. Post ID. Default is ID of the global $post
+ * if EMPTY_TRASH_DAYS equals true.
+ * @return false|array|WP_Post|null Post data array, otherwise false.
+ */
+function wp_trash_post( $post_id = 0 ) {
+ if ( !EMPTY_TRASH_DAYS )
+ return wp_delete_post($post_id, true);
+
+ if ( !$post = get_post($post_id, ARRAY_A) )
+ return $post;
+
+ if ( $post['post_status'] == 'trash' )
+ return false;
+
+ /**
+ * Fires before a post is sent to the trash.
+ *
+ * @since 3.3.0
+ *
+ * @param int $post_id Post ID.
+ */
+ do_action( 'wp_trash_post', $post_id );
+
+ add_post_meta($post_id,'_wp_trash_meta_status', $post['post_status']);
+ add_post_meta($post_id,'_wp_trash_meta_time', time());
+
+ $post['post_status'] = 'trash';
+ wp_insert_post( wp_slash( $post ) );
+
+ wp_trash_post_comments($post_id);
+
+ /**
+ * Fires after a post is sent to the trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Post ID.
+ */
+ do_action( 'trashed_post', $post_id );
+
+ return $post;
+}
+
+/**
+ * Restore a post or page from the Trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Optional. Post ID. Default is ID of the global $post.
+ * @return WP_Post|false WP_Post object. False on failure.
+ */
+function wp_untrash_post( $post_id = 0 ) {
+ if ( !$post = get_post($post_id, ARRAY_A) )
+ return $post;
+
+ if ( $post['post_status'] != 'trash' )
+ return false;
+
+ /**
+ * Fires before a post is restored from the trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Post ID.
+ */
+ do_action( 'untrash_post', $post_id );
+
+ $post_status = get_post_meta($post_id, '_wp_trash_meta_status', true);
+
+ $post['post_status'] = $post_status;
+
+ delete_post_meta($post_id, '_wp_trash_meta_status');
+ delete_post_meta($post_id, '_wp_trash_meta_time');
+
+ wp_insert_post( wp_slash( $post ) );
+
+ wp_untrash_post_comments($post_id);
+
+ /**
+ * Fires after a post is restored from the trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Post ID.
+ */
+ do_action( 'untrashed_post', $post_id );
+
+ return $post;
+}
+
+/**
+ * Moves comments for a post to the trash.
+ *
+ * @since 2.9.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
+ * @return mixed|void False on failure.
+ */
+function wp_trash_post_comments( $post = null ) {
+ global $wpdb;
+
+ $post = get_post($post);
+ if ( empty($post) )
+ return;
+
+ $post_id = $post->ID;
+
+ /**
+ * Fires before comments are sent to the trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Post ID.
+ */
+ do_action( 'trash_post_comments', $post_id );
+
+ $comments = $wpdb->get_results( $wpdb->prepare("SELECT comment_ID, comment_approved FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id) );
+ if ( empty($comments) )
+ return;
+
+ // Cache current status for each comment.
+ $statuses = array();
+ foreach ( $comments as $comment )
+ $statuses[$comment->comment_ID] = $comment->comment_approved;
+ add_post_meta($post_id, '_wp_trash_meta_comments_status', $statuses);
+
+ // Set status for all comments to post-trashed.
+ $result = $wpdb->update($wpdb->comments, array('comment_approved' => 'post-trashed'), array('comment_post_ID' => $post_id));
+
+ clean_comment_cache( array_keys($statuses) );
+
+ /**
+ * Fires after comments are sent to the trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Post ID.
+ * @param array $statuses Array of comment statuses.
+ */
+ do_action( 'trashed_post_comments', $post_id, $statuses );
+
+ return $result;
+}
+
+/**
+ * Restore comments for a post from the trash.
+ *
+ * @since 2.9.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
+ * @return true|void
+ */
+function wp_untrash_post_comments( $post = null ) {
+ global $wpdb;
+
+ $post = get_post($post);
+ if ( empty($post) )
+ return;
+
+ $post_id = $post->ID;
+
+ $statuses = get_post_meta($post_id, '_wp_trash_meta_comments_status', true);
+
+ if ( empty($statuses) )
+ return true;
+
+ /**
+ * Fires before comments are restored for a post from the trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Post ID.
+ */
+ do_action( 'untrash_post_comments', $post_id );
+
+ // Restore each comment to its original status.
+ $group_by_status = array();
+ foreach ( $statuses as $comment_id => $comment_status )
+ $group_by_status[$comment_status][] = $comment_id;
+
+ foreach ( $group_by_status as $status => $comments ) {
+ // Sanity check. This shouldn't happen.
+ if ( 'post-trashed' == $status ) {
+ $status = '0';
+ }
+ $comments_in = implode( ', ', array_map( 'intval', $comments ) );
+ $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->comments SET comment_approved = %s WHERE comment_ID IN ($comments_in)", $status ) );
+ }
+
+ clean_comment_cache( array_keys($statuses) );
+
+ delete_post_meta($post_id, '_wp_trash_meta_comments_status');
+
+ /**
+ * Fires after comments are restored for a post from the trash.
+ *
+ * @since 2.9.0
+ *
+ * @param int $post_id Post ID.
+ */
+ do_action( 'untrashed_post_comments', $post_id );
+}
+
+/**
+ * Retrieve the list of categories for a post.
+ *
+ * Compatibility layer for themes and plugins. Also an easy layer of abstraction
+ * away from the complexity of the taxonomy layer.
+ *
+ * @since 2.1.0
+ *
+ * @see wp_get_object_terms()
+ *
+ * @param int $post_id Optional. The Post ID. Does not default to the ID of the
+ * global $post. Default 0.
+ * @param array $args Optional. Category arguments. See wp_get_object_terms(). Default empty.
+ * @return array List of categories. If the `$fields` argument passed via `$args` is 'all' or
+ * 'all_with_object_id', an array of WP_Term objects will be returned. If `$fields`
+ * is 'ids', an array of category ids. If `$fields` is 'names', an array of category names.
+ */
+function wp_get_post_categories( $post_id = 0, $args = array() ) {
+ $post_id = (int) $post_id;
+
+ $defaults = array('fields' => 'ids');
+ $args = wp_parse_args( $args, $defaults );
+
+ $cats = wp_get_object_terms($post_id, 'category', $args);
+ return $cats;
+}
+
+/**
+ * Retrieve the tags for a post.
+ *
+ * There is only one default for this function, called 'fields' and by default
+ * is set to 'all'. There are other defaults that can be overridden in
+ * wp_get_object_terms().
+ *
+ * @since 2.3.0
+ *
+ * @param int $post_id Optional. The Post ID. Does not default to the ID of the
+ * global $post. Default 0.
+ * @param array $args Optional. Overwrite the defaults
+ * @return array List of post tags.
+ */
+function wp_get_post_tags( $post_id = 0, $args = array() ) {
+ return wp_get_post_terms( $post_id, 'post_tag', $args);
+}
+
+/**
+ * Retrieve the terms for a post.
+ *
+ * There is only one default for this function, called 'fields' and by default
+ * is set to 'all'. There are other defaults that can be overridden in
+ * wp_get_object_terms().
+ *
+ * @since 2.8.0
+ *
+ * @param int $post_id Optional. The Post ID. Does not default to the ID of the
+ * global $post. Default 0.
+ * @param string $taxonomy Optional. The taxonomy for which to retrieve terms. Default 'post_tag'.
+ * @param array $args Optional. wp_get_object_terms() arguments. Default empty array.
+ * @return array|WP_Error List of post terms or empty array if no terms were found. WP_Error object
+ * if `$taxonomy` doesn't exist.
+ */
+function wp_get_post_terms( $post_id = 0, $taxonomy = 'post_tag', $args = array() ) {
+ $post_id = (int) $post_id;
+
+ $defaults = array('fields' => 'all');
+ $args = wp_parse_args( $args, $defaults );
+
+ $tags = wp_get_object_terms($post_id, $taxonomy, $args);
+
+ return $tags;
+}
+
+/**
+ * Retrieve a number of recent posts.
+ *
+ * @since 1.0.0
+ *
+ * @see get_posts()
+ *
+ * @param array $args Optional. Arguments to retrieve posts. Default empty array.
+ * @param string $output Optional. The required return type. One of OBJECT or ARRAY_A, which correspond to
+ * a WP_Post object or an associative array, respectively. Default ARRAY_A.
+ * @return array|false Array of recent posts, where the type of each element is determined by $output parameter.
+ * Empty array on failure.
+ */
+function wp_get_recent_posts( $args = array(), $output = ARRAY_A ) {
+
+ if ( is_numeric( $args ) ) {
+ _deprecated_argument( __FUNCTION__, '3.1.0', __( 'Passing an integer number of posts is deprecated. Pass an array of arguments instead.' ) );
+ $args = array( 'numberposts' => absint( $args ) );
+ }
+
+ // Set default arguments.
+ $defaults = array(
+ 'numberposts' => 10, 'offset' => 0,
+ 'category' => 0, 'orderby' => 'post_date',
+ 'order' => 'DESC', 'include' => '',
+ 'exclude' => '', 'meta_key' => '',
+ 'meta_value' =>'', 'post_type' => 'post', 'post_status' => 'draft, publish, future, pending, private',
+ 'suppress_filters' => true
+ );
+
+ $r = wp_parse_args( $args, $defaults );
+
+ $results = get_posts( $r );
+
+ // Backward compatibility. Prior to 3.1 expected posts to be returned in array.
+ if ( ARRAY_A == $output ){
+ foreach ( $results as $key => $result ) {
+ $results[$key] = get_object_vars( $result );
+ }
+ return $results ? $results : array();
+ }
+
+ return $results ? $results : false;
+
+}
+
+/**
+ * Insert or update a post.
+ *
+ * If the $postarr parameter has 'ID' set to a value, then post will be updated.
+ *
+ * You can set the post date manually, by setting the values for 'post_date'
+ * and 'post_date_gmt' keys. You can close the comments or open the comments by
+ * setting the value for 'comment_status' key.
+ *
+ * @since 1.0.0
+ * @since 4.2.0 Support was added for encoding emoji in the post title, content, and excerpt.
+ * @since 4.4.0 A 'meta_input' array can now be passed to `$postarr` to add post meta data.
+ *
+ * @see sanitize_post()
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param array $postarr {
+ * An array of elements that make up a post to update or insert.
+ *
+ * @type int $ID The post ID. If equal to something other than 0,
+ * the post with that ID will be updated. Default 0.
+ * @type int $post_author The ID of the user who added the post. Default is
+ * the current user ID.
+ * @type string $post_date The date of the post. Default is the current time.
+ * @type string $post_date_gmt The date of the post in the GMT timezone. Default is
+ * the value of `$post_date`.
+ * @type mixed $post_content The post content. Default empty.
+ * @type string $post_content_filtered The filtered post content. Default empty.
+ * @type string $post_title The post title. Default empty.
+ * @type string $post_excerpt The post excerpt. Default empty.
+ * @type string $post_status The post status. Default 'draft'.
+ * @type string $post_type The post type. Default 'post'.
+ * @type string $comment_status Whether the post can accept comments. Accepts 'open' or 'closed'.
+ * Default is the value of 'default_comment_status' option.
+ * @type string $ping_status Whether the post can accept pings. Accepts 'open' or 'closed'.
+ * Default is the value of 'default_ping_status' option.
+ * @type string $post_password The password to access the post. Default empty.
+ * @type string $post_name The post name. Default is the sanitized post title
+ * when creating a new post.
+ * @type string $to_ping Space or carriage return-separated list of URLs to ping.
+ * Default empty.
+ * @type string $pinged Space or carriage return-separated list of URLs that have
+ * been pinged. Default empty.
+ * @type string $post_modified The date when the post was last modified. Default is
+ * the current time.
+ * @type string $post_modified_gmt The date when the post was last modified in the GMT
+ * timezone. Default is the current time.
+ * @type int $post_parent Set this for the post it belongs to, if any. Default 0.
+ * @type int $menu_order The order the post should be displayed in. Default 0.
+ * @type string $post_mime_type The mime type of the post. Default empty.
+ * @type string $guid Global Unique ID for referencing the post. Default empty.
+ * @type array $post_category Array of category names, slugs, or IDs.
+ * Defaults to value of the 'default_category' option.
+ * @type array $tax_input Array of taxonomy terms keyed by their taxonomy name. Default empty.
+ * @type array $meta_input Array of post meta values keyed by their post meta key. Default empty.
+ * }
+ * @param bool $wp_error Optional. Whether to return a WP_Error on failure. Default false.
+ * @return int|WP_Error The post ID on success. The value 0 or WP_Error on failure.
+ */
+function wp_insert_post( $postarr, $wp_error = false ) {
+ global $wpdb;
+
+ $user_id = get_current_user_id();
+
+ $defaults = array(
+ 'post_author' => $user_id,
+ 'post_content' => '',
+ 'post_content_filtered' => '',
+ 'post_title' => '',
+ 'post_excerpt' => '',
+ 'post_status' => 'draft',
+ 'post_type' => 'post',
+ 'comment_status' => '',
+ 'ping_status' => '',
+ 'post_password' => '',
+ 'to_ping' => '',
+ 'pinged' => '',
+ 'post_parent' => 0,
+ 'menu_order' => 0,
+ 'guid' => '',
+ 'import_id' => 0,
+ 'context' => '',
+ );
+
+ $postarr = wp_parse_args($postarr, $defaults);
+
+ unset( $postarr[ 'filter' ] );
+
+ $postarr = sanitize_post($postarr, 'db');
+
+ // Are we updating or creating?
+ $post_ID = 0;
+ $update = false;
+ $guid = $postarr['guid'];
+
+ if ( ! empty( $postarr['ID'] ) ) {
+ $update = true;
+
+ // Get the post ID and GUID.
+ $post_ID = $postarr['ID'];
+ $post_before = get_post( $post_ID );
+ if ( is_null( $post_before ) ) {
+ if ( $wp_error ) {
+ return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
+ }
+ return 0;
+ }
+
+ $guid = get_post_field( 'guid', $post_ID );
+ $previous_status = get_post_field('post_status', $post_ID );
+ } else {
+ $previous_status = 'new';
+ }
+
+ $post_type = empty( $postarr['post_type'] ) ? 'post' : $postarr['post_type'];
+
+ $post_title = $postarr['post_title'];
+ $post_content = $postarr['post_content'];
+ $post_excerpt = $postarr['post_excerpt'];
+ if ( isset( $postarr['post_name'] ) ) {
+ $post_name = $postarr['post_name'];
+ } elseif ( $update ) {
+ // For an update, don't modify the post_name if it wasn't supplied as an argument.
+ $post_name = $post_before->post_name;
+ }
+
+ $maybe_empty = 'attachment' !== $post_type
+ && ! $post_content && ! $post_title && ! $post_excerpt
+ && post_type_supports( $post_type, 'editor' )
+ && post_type_supports( $post_type, 'title' )
+ && post_type_supports( $post_type, 'excerpt' );
+
+ /**
+ * Filters whether the post should be considered "empty".
+ *
+ * The post is considered "empty" if both:
+ * 1. The post type supports the title, editor, and excerpt fields
+ * 2. The title, editor, and excerpt fields are all empty
+ *
+ * Returning a truthy value to the filter will effectively short-circuit
+ * the new post being inserted, returning 0. If $wp_error is true, a WP_Error
+ * will be returned instead.
+ *
+ * @since 3.3.0
+ *
+ * @param bool $maybe_empty Whether the post should be considered "empty".
+ * @param array $postarr Array of post data.
+ */
+ if ( apply_filters( 'wp_insert_post_empty_content', $maybe_empty, $postarr ) ) {
+ if ( $wp_error ) {
+ return new WP_Error( 'empty_content', __( 'Content, title, and excerpt are empty.' ) );
+ } else {
+ return 0;
+ }
+ }
+
+ $post_status = empty( $postarr['post_status'] ) ? 'draft' : $postarr['post_status'];
+ if ( 'attachment' === $post_type && ! in_array( $post_status, array( 'inherit', 'private', 'trash', 'auto-draft' ), true ) ) {
+ $post_status = 'inherit';
+ }
+
+ if ( ! empty( $postarr['post_category'] ) ) {
+ // Filter out empty terms.
+ $post_category = array_filter( $postarr['post_category'] );
+ }
+
+ // Make sure we set a valid category.
+ if ( empty( $post_category ) || 0 == count( $post_category ) || ! is_array( $post_category ) ) {
+ // 'post' requires at least one category.
+ if ( 'post' == $post_type && 'auto-draft' != $post_status ) {
+ $post_category = array( get_option('default_category') );
+ } else {
+ $post_category = array();
+ }
+ }
+
+ // Don't allow contributors to set the post slug for pending review posts.
+ if ( 'pending' == $post_status && !current_user_can( 'publish_posts' ) ) {
+ $post_name = '';
+ }
+
+ /*
+ * Create a valid post name. Drafts and pending posts are allowed to have
+ * an empty post name.
+ */
+ if ( empty($post_name) ) {
+ if ( !in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) ) {
+ $post_name = sanitize_title($post_title);
+ } else {
+ $post_name = '';
+ }
+ } else {
+ // On updates, we need to check to see if it's using the old, fixed sanitization context.
+ $check_name = sanitize_title( $post_name, '', 'old-save' );
+ if ( $update && strtolower( urlencode( $post_name ) ) == $check_name && get_post_field( 'post_name', $post_ID ) == $check_name ) {
+ $post_name = $check_name;
+ } else { // new post, or slug has changed.
+ $post_name = sanitize_title($post_name);
+ }
+ }
+
+ /*
+ * If the post date is empty (due to having been new or a draft) and status
+ * is not 'draft' or 'pending', set date to now.
+ */
+ if ( empty( $postarr['post_date'] ) || '0000-00-00 00:00:00' == $postarr['post_date'] ) {
+ if ( empty( $postarr['post_date_gmt'] ) || '0000-00-00 00:00:00' == $postarr['post_date_gmt'] ) {
+ $post_date = current_time( 'mysql' );
+ } else {
+ $post_date = get_date_from_gmt( $postarr['post_date_gmt'] );
+ }
+ } else {
+ $post_date = $postarr['post_date'];
+ }
+
+ // Validate the date.
+ $mm = substr( $post_date, 5, 2 );
+ $jj = substr( $post_date, 8, 2 );
+ $aa = substr( $post_date, 0, 4 );
+ $valid_date = wp_checkdate( $mm, $jj, $aa, $post_date );
+ if ( ! $valid_date ) {
+ if ( $wp_error ) {
+ return new WP_Error( 'invalid_date', __( 'Invalid date.' ) );
+ } else {
+ return 0;
+ }
+ }
+
+ if ( empty( $postarr['post_date_gmt'] ) || '0000-00-00 00:00:00' == $postarr['post_date_gmt'] ) {
+ if ( ! in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) ) {
+ $post_date_gmt = get_gmt_from_date( $post_date );
+ } else {
+ $post_date_gmt = '0000-00-00 00:00:00';
+ }
+ } else {
+ $post_date_gmt = $postarr['post_date_gmt'];
+ }
+
+ 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 ( 'attachment' !== $post_type ) {
+ if ( 'publish' == $post_status ) {
+ $now = gmdate('Y-m-d H:i:59');
+ if ( mysql2date('U', $post_date_gmt, false) > mysql2date('U', $now, false) ) {
+ $post_status = 'future';
+ }
+ } elseif ( 'future' == $post_status ) {
+ $now = gmdate('Y-m-d H:i:59');
+ if ( mysql2date('U', $post_date_gmt, false) <= mysql2date('U', $now, false) ) {
+ $post_status = 'publish';
+ }
+ }
+ }
+
+ // Comment status.
+ if ( empty( $postarr['comment_status'] ) ) {
+ if ( $update ) {
+ $comment_status = 'closed';
+ } else {
+ $comment_status = get_default_comment_status( $post_type );
+ }
+ } else {
+ $comment_status = $postarr['comment_status'];
+ }
+
+ // These variables are needed by compact() later.
+ $post_content_filtered = $postarr['post_content_filtered'];
+ $post_author = isset( $postarr['post_author'] ) ? $postarr['post_author'] : $user_id;
+ $ping_status = empty( $postarr['ping_status'] ) ? get_default_comment_status( $post_type, 'pingback' ) : $postarr['ping_status'];
+ $to_ping = isset( $postarr['to_ping'] ) ? sanitize_trackback_urls( $postarr['to_ping'] ) : '';
+ $pinged = isset( $postarr['pinged'] ) ? $postarr['pinged'] : '';
+ $import_id = isset( $postarr['import_id'] ) ? $postarr['import_id'] : 0;
+
+ /*
+ * The 'wp_insert_post_parent' filter expects all variables to be present.
+ * Previously, these variables would have already been extracted
+ */
+ if ( isset( $postarr['menu_order'] ) ) {
+ $menu_order = (int) $postarr['menu_order'];
+ } else {
+ $menu_order = 0;
+ }
+
+ $post_password = isset( $postarr['post_password'] ) ? $postarr['post_password'] : '';
+ if ( 'private' == $post_status ) {
+ $post_password = '';
+ }
+
+ if ( isset( $postarr['post_parent'] ) ) {
+ $post_parent = (int) $postarr['post_parent'];
+ } else {
+ $post_parent = 0;
+ }
+
+ /**
+ * Filters the post parent -- used to check for and prevent hierarchy loops.
+ *
+ * @since 3.1.0
+ *
+ * @param int $post_parent Post parent ID.
+ * @param int $post_ID Post ID.
+ * @param array $new_postarr Array of parsed post data.
+ * @param array $postarr Array of sanitized, but otherwise unmodified post data.
+ */
+ $post_parent = apply_filters( 'wp_insert_post_parent', $post_parent, $post_ID, compact( array_keys( $postarr ) ), $postarr );
+
+ /*
+ * If the post is being untrashed and it has a desired slug stored in post meta,
+ * reassign it.
+ */
+ if ( 'trash' === $previous_status && 'trash' !== $post_status ) {
+ $desired_post_slug = get_post_meta( $post_ID, '_wp_desired_post_slug', true );
+ if ( $desired_post_slug ) {
+ delete_post_meta( $post_ID, '_wp_desired_post_slug' );
+ $post_name = $desired_post_slug;
+ }
+ }
+
+ // If a trashed post has the desired slug, change it and let this post have it.
+ if ( 'trash' !== $post_status && $post_name ) {
+ wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_ID );
+ }
+
+ // When trashing an existing post, change its slug to allow non-trashed posts to use it.
+ if ( 'trash' === $post_status && 'trash' !== $previous_status && 'new' !== $previous_status ) {
+ $post_name = wp_add_trashed_suffix_to_post_name_for_post( $post_ID );
+ }
+
+ $post_name = wp_unique_post_slug( $post_name, $post_ID, $post_status, $post_type, $post_parent );
+
+ // Don't unslash.
+ $post_mime_type = isset( $postarr['post_mime_type'] ) ? $postarr['post_mime_type'] : '';
+
+ // Expected_slashed (everything!).
+ $data = compact( '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' );
+
+ $emoji_fields = array( 'post_title', 'post_content', 'post_excerpt' );
+
+ foreach ( $emoji_fields as $emoji_field ) {
+ if ( isset( $data[ $emoji_field ] ) ) {
+ $charset = $wpdb->get_col_charset( $wpdb->posts, $emoji_field );
+ if ( 'utf8' === $charset ) {
+ $data[ $emoji_field ] = wp_encode_emoji( $data[ $emoji_field ] );
+ }
+ }
+ }
+
+ if ( 'attachment' === $post_type ) {
+ /**
+ * Filters attachment post data before it is updated in or added to the database.
+ *
+ * @since 3.9.0
+ *
+ * @param array $data An array of sanitized attachment post data.
+ * @param array $postarr An array of unsanitized attachment post data.
+ */
+ $data = apply_filters( 'wp_insert_attachment_data', $data, $postarr );
+ } else {
+ /**
+ * Filters slashed post data just before it is inserted into the database.
+ *
+ * @since 2.7.0
+ *
+ * @param array $data An array of slashed post data.
+ * @param array $postarr An array of sanitized, but otherwise unmodified post data.
+ */
+ $data = apply_filters( 'wp_insert_post_data', $data, $postarr );
+ }
+ $data = wp_unslash( $data );
+ $where = array( 'ID' => $post_ID );
+
+ if ( $update ) {
+ /**
+ * Fires immediately before an existing post is updated in the database.
+ *
+ * @since 2.5.0
+ *
+ * @param int $post_ID Post ID.
+ * @param array $data Array of unslashed post data.
+ */
+ do_action( 'pre_post_update', $post_ID, $data );
+ if ( false === $wpdb->update( $wpdb->posts, $data, $where ) ) {
+ if ( $wp_error ) {
+ return new WP_Error('db_update_error', __('Could not update post in the database'), $wpdb->last_error);
+ } else {
+ return 0;
+ }
+ }
+ } else {
+ // If there is a suggested ID, use it if not already present.
+ if ( ! empty( $import_id ) ) {
+ $import_id = (int) $import_id;
+ if ( ! $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE ID = %d", $import_id) ) ) {
+ $data['ID'] = $import_id;
+ }
+ }
+ if ( false === $wpdb->insert( $wpdb->posts, $data ) ) {
+ if ( $wp_error ) {
+ return new WP_Error('db_insert_error', __('Could not insert post into the database'), $wpdb->last_error);
+ } else {
+ return 0;
+ }
+ }
+ $post_ID = (int) $wpdb->insert_id;
+
+ // Use the newly generated $post_ID.
+ $where = array( 'ID' => $post_ID );
+ }
+
+ if ( empty( $data['post_name'] ) && ! in_array( $data['post_status'], array( 'draft', 'pending', 'auto-draft' ) ) ) {
+ $data['post_name'] = wp_unique_post_slug( sanitize_title( $data['post_title'], $post_ID ), $post_ID, $data['post_status'], $post_type, $post_parent );
+ $wpdb->update( $wpdb->posts, array( 'post_name' => $data['post_name'] ), $where );
+ clean_post_cache( $post_ID );
+ }
+
+ if ( is_object_in_taxonomy( $post_type, 'category' ) ) {
+ wp_set_post_categories( $post_ID, $post_category );
+ }
+
+ if ( isset( $postarr['tags_input'] ) && is_object_in_taxonomy( $post_type, 'post_tag' ) ) {
+ wp_set_post_tags( $post_ID, $postarr['tags_input'] );
+ }
+
+ // New-style support for all custom taxonomies.
+ if ( ! empty( $postarr['tax_input'] ) ) {
+ foreach ( $postarr['tax_input'] as $taxonomy => $tags ) {
+ $taxonomy_obj = get_taxonomy($taxonomy);
+ if ( ! $taxonomy_obj ) {
+ /* translators: %s: taxonomy name */
+ _doing_it_wrong( __FUNCTION__, sprintf( __( 'Invalid taxonomy: %s.' ), $taxonomy ), '4.4.0' );
+ continue;
+ }
+
+ // array = hierarchical, string = non-hierarchical.
+ if ( is_array( $tags ) ) {
+ $tags = array_filter($tags);
+ }
+ if ( current_user_can( $taxonomy_obj->cap->assign_terms ) ) {
+ wp_set_post_terms( $post_ID, $tags, $taxonomy );
+ }
+ }
+ }
+
+ if ( ! empty( $postarr['meta_input'] ) ) {
+ foreach ( $postarr['meta_input'] as $field => $value ) {
+ update_post_meta( $post_ID, $field, $value );
+ }
+ }
+
+ $current_guid = get_post_field( 'guid', $post_ID );
+
+ // Set GUID.
+ if ( ! $update && '' == $current_guid ) {
+ $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post_ID ) ), $where );
+ }
+
+ if ( 'attachment' === $postarr['post_type'] ) {
+ if ( ! empty( $postarr['file'] ) ) {
+ update_attached_file( $post_ID, $postarr['file'] );
+ }
+
+ if ( ! empty( $postarr['context'] ) ) {
+ add_post_meta( $post_ID, '_wp_attachment_context', $postarr['context'], true );
+ }
+ }
+
+ // Set or remove featured image.
+ if ( isset( $postarr['_thumbnail_id'] ) ) {
+ $thumbnail_support = current_theme_supports( 'post-thumbnails', $post_type ) && post_type_supports( $post_type, 'thumbnail' ) || 'revision' === $post_type;
+ if ( ! $thumbnail_support && 'attachment' === $post_type && $post_mime_type ) {
+ if ( wp_attachment_is( 'audio', $post_ID ) ) {
+ $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
+ } elseif ( wp_attachment_is( 'video', $post_ID ) ) {
+ $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
+ }
+ }
+
+ if ( $thumbnail_support ) {
+ $thumbnail_id = intval( $postarr['_thumbnail_id'] );
+ if ( -1 === $thumbnail_id ) {
+ delete_post_thumbnail( $post_ID );
+ } else {
+ set_post_thumbnail( $post_ID, $thumbnail_id );
+ }
+ }
+ }
+
+ clean_post_cache( $post_ID );
+
+ $post = get_post( $post_ID );
+
+ if ( ! empty( $postarr['page_template'] ) ) {
+ $post->page_template = $postarr['page_template'];
+ $page_templates = wp_get_theme()->get_page_templates( $post );
+ if ( 'default' != $postarr['page_template'] && ! isset( $page_templates[ $postarr['page_template'] ] ) ) {
+ if ( $wp_error ) {
+ return new WP_Error( 'invalid_page_template', __( 'Invalid page template.' ) );
+ }
+ update_post_meta( $post_ID, '_wp_page_template', 'default' );
+ } else {
+ update_post_meta( $post_ID, '_wp_page_template', $postarr['page_template'] );
+ }
+ }
+
+ if ( 'attachment' !== $postarr['post_type'] ) {
+ wp_transition_post_status( $data['post_status'], $previous_status, $post );
+ } else {
+ if ( $update ) {
+ /**
+ * Fires once an existing attachment has been updated.
+ *
+ * @since 2.0.0
+ *
+ * @param int $post_ID Attachment ID.
+ */
+ do_action( 'edit_attachment', $post_ID );
+ $post_after = get_post( $post_ID );
+
+ /**
+ * Fires once an existing attachment has been updated.
+ *
+ * @since 4.4.0
+ *
+ * @param int $post_ID Post ID.
+ * @param WP_Post $post_after Post object following the update.
+ * @param WP_Post $post_before Post object before the update.
+ */
+ do_action( 'attachment_updated', $post_ID, $post_after, $post_before );
+ } else {
+
+ /**
+ * Fires once an attachment has been added.
+ *
+ * @since 2.0.0
+ *
+ * @param int $post_ID Attachment ID.
+ */
+ do_action( 'add_attachment', $post_ID );
+ }
+
+ return $post_ID;
+ }
+
+ if ( $update ) {
+ /**
+ * Fires once an existing post has been updated.
+ *
+ * @since 1.2.0
+ *
+ * @param int $post_ID Post ID.
+ * @param WP_Post $post Post object.
+ */
+ do_action( 'edit_post', $post_ID, $post );
+ $post_after = get_post($post_ID);
+
+ /**
+ * Fires once an existing post has been updated.
+ *
+ * @since 3.0.0
+ *
+ * @param int $post_ID Post ID.
+ * @param WP_Post $post_after Post object following the update.
+ * @param WP_Post $post_before Post object before the update.
+ */
+ do_action( 'post_updated', $post_ID, $post_after, $post_before);
+ }
+
+ /**
+ * Fires once a post has been saved.
+ *
+ * The dynamic portion of the hook name, `$post->post_type`, refers to
+ * the post type slug.
+ *
+ * @since 3.7.0
+ *
+ * @param int $post_ID Post ID.
+ * @param WP_Post $post Post object.
+ * @param bool $update Whether this is an existing post being updated or not.
+ */
+ do_action( "save_post_{$post->post_type}", $post_ID, $post, $update );
+
+ /**
+ * Fires once a post has been saved.
+ *
+ * @since 1.5.0
+ *
+ * @param int $post_ID Post ID.
+ * @param WP_Post $post Post object.
+ * @param bool $update Whether this is an existing post being updated or not.
+ */
+ do_action( 'save_post', $post_ID, $post, $update );
+
+ /**
+ * Fires once a post has been saved.
+ *
+ * @since 2.0.0
+ *
+ * @param int $post_ID Post ID.
+ * @param WP_Post $post Post object.
+ * @param bool $update Whether this is an existing post being updated or not.
+ */
+ do_action( 'wp_insert_post', $post_ID, $post, $update );
+
+ return $post_ID;
+}
+
+/**
+ * Update a post with new post data.
+ *
+ * The date does not have to be set for drafts. You can set the date and it will
+ * not be overridden.
+ *
+ * @since 1.0.0
+ *
+ * @param array|object $postarr Optional. Post data. Arrays are expected to be escaped,
+ * objects are not. Default array.
+ * @param bool $wp_error Optional. Allow return of WP_Error on failure. Default false.
+ * @return int|WP_Error The value 0 or WP_Error on failure. The post ID on success.
+ */
+function wp_update_post( $postarr = array(), $wp_error = false ) {
+ if ( is_object($postarr) ) {
+ // Non-escaped post was passed.
+ $postarr = get_object_vars($postarr);
+ $postarr = wp_slash($postarr);
+ }
+
+ // First, get all of the original fields.
+ $post = get_post($postarr['ID'], ARRAY_A);
+
+ if ( is_null( $post ) ) {
+ if ( $wp_error )
+ return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
+ return 0;
+ }
+
+ // Escape data pulled from DB.
+ $post = wp_slash($post);
+
+ // Passed post category list overwrites existing category list if not empty.
+ if ( isset($postarr['post_category']) && is_array($postarr['post_category'])
+ && 0 != count($postarr['post_category']) )
+ $post_cats = $postarr['post_category'];
+ else
+ $post_cats = $post['post_category'];
+
+ // Drafts shouldn't be assigned a date unless explicitly done so by the user.
+ if ( isset( $post['post_status'] ) && in_array($post['post_status'], array('draft', 'pending', 'auto-draft')) && empty($postarr['edit_date']) &&
+ ('0000-00-00 00:00:00' == $post['post_date_gmt']) )
+ $clear_date = true;
+ else
+ $clear_date = false;
+
+ // Merge old and new fields with new fields overwriting old ones.
+ $postarr = array_merge($post, $postarr);
+ $postarr['post_category'] = $post_cats;
+ if ( $clear_date ) {
+ $postarr['post_date'] = current_time('mysql');
+ $postarr['post_date_gmt'] = '';
+ }
+
+ if ($postarr['post_type'] == 'attachment')
+ return wp_insert_attachment($postarr);
+
+ return wp_insert_post( $postarr, $wp_error );
+}
+
+/**
+ * Publish a post by transitioning the post status.
+ *
+ * @since 2.1.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param int|WP_Post $post Post ID or post object.
+ */
+function wp_publish_post( $post ) {
+ global $wpdb;
+
+ if ( ! $post = get_post( $post ) )
+ return;
+
+ if ( 'publish' == $post->post_status )
+ return;
+
+ $wpdb->update( $wpdb->posts, array( 'post_status' => 'publish' ), array( 'ID' => $post->ID ) );
+
+ clean_post_cache( $post->ID );
+
+ $old_status = $post->post_status;
+ $post->post_status = 'publish';
+ wp_transition_post_status( 'publish', $old_status, $post );
+
+ /** This action is documented in wp-includes/post.php */
+ do_action( 'edit_post', $post->ID, $post );
+
+ /** This action is documented in wp-includes/post.php */
+ do_action( "save_post_{$post->post_type}", $post->ID, $post, true );
+
+ /** This action is documented in wp-includes/post.php */
+ do_action( 'save_post', $post->ID, $post, true );
+
+ /** This action is documented in wp-includes/post.php */
+ do_action( 'wp_insert_post', $post->ID, $post, true );
+}
+
+/**
+ * Publish future post and make sure post ID has future post status.
+ *
+ * Invoked by cron 'publish_future_post' event. This safeguard prevents cron
+ * from publishing drafts, etc.
+ *
+ * @since 2.5.0
+ *
+ * @param int|WP_Post $post_id Post ID or post object.
+ */
+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' );
+
+ // Uh oh, someone jumped the gun!
+ if ( $time > time() ) {
+ wp_clear_scheduled_hook( 'publish_future_post', array( $post_id ) ); // clear anything else in the system
+ wp_schedule_single_event( $time, 'publish_future_post', array( $post_id ) );
+ return;
+ }
+
+ // wp_publish_post() returns no meaningful value.
+ wp_publish_post( $post_id );
+}
+
+/**
+ * Computes a unique slug for the post, when given the desired slug and some post details.
+ *
+ * @since 2.8.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string $slug The desired slug (post_name).
+ * @param int $post_ID Post ID.
+ * @param string $post_status No uniqueness checks are made if the post is still draft or pending.
+ * @param string $post_type Post type.
+ * @param int $post_parent Post parent ID.
+ * @return string Unique slug for the post, based on $post_name (with a -1, -2, etc. suffix)
+ */
+function wp_unique_post_slug( $slug, $post_ID, $post_status, $post_type, $post_parent ) {
+ if ( in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) || ( 'inherit' == $post_status && 'revision' == $post_type ) )
+ return $slug;
+
+ global $wpdb, $wp_rewrite;
+
+ $original_slug = $slug;
+
+ $feeds = $wp_rewrite->feeds;
+ if ( ! is_array( $feeds ) )
+ $feeds = array();
+
+ if ( 'attachment' == $post_type ) {
+ // Attachment slugs must be unique across all types.
+ $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND ID != %d LIMIT 1";
+ $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_ID ) );
+
+ /**
+ * Filters whether the post slug would make a bad attachment slug.
+ *
+ * @since 3.1.0
+ *
+ * @param bool $bad_slug Whether the slug would be bad as an attachment slug.
+ * @param string $slug The post slug.
+ */
+ if ( $post_name_check || in_array( $slug, $feeds ) || 'embed' === $slug || apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', false, $slug ) ) {
+ $suffix = 2;
+ do {
+ $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+ $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_ID ) );
+ $suffix++;
+ } while ( $post_name_check );
+ $slug = $alt_post_name;
+ }
+ } elseif ( is_post_type_hierarchical( $post_type ) ) {
+ if ( 'nav_menu_item' == $post_type )
+ return $slug;
+
+ /*
+ * Page slugs must be unique within their own trees. Pages are in a separate
+ * namespace than posts so page slugs are allowed to overlap post slugs.
+ */
+ $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type IN ( %s, 'attachment' ) AND ID != %d AND post_parent = %d LIMIT 1";
+ $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_ID, $post_parent ) );
+
+ /**
+ * Filters whether the post slug would make a bad hierarchical post slug.
+ *
+ * @since 3.1.0
+ *
+ * @param bool $bad_slug Whether the post slug would be bad in a hierarchical post context.
+ * @param string $slug The post slug.
+ * @param string $post_type Post type.
+ * @param int $post_parent Post parent ID.
+ */
+ if ( $post_name_check || in_array( $slug, $feeds ) || 'embed' === $slug || preg_match( "@^($wp_rewrite->pagination_base)?\d+$@", $slug ) || apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', false, $slug, $post_type, $post_parent ) ) {
+ $suffix = 2;
+ do {
+ $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+ $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID, $post_parent ) );
+ $suffix++;
+ } while ( $post_name_check );
+ $slug = $alt_post_name;
+ }
+ } else {
+ // Post slugs must be unique across all posts.
+ $check_sql = "SELECT post_name FROM $wpdb->posts WHERE post_name = %s AND post_type = %s AND ID != %d LIMIT 1";
+ $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $slug, $post_type, $post_ID ) );
+
+ // Prevent new post slugs that could result in URLs that conflict with date archives.
+ $post = get_post( $post_ID );
+ $conflicts_with_date_archive = false;
+ if ( 'post' === $post_type && ( ! $post || $post->post_name !== $slug ) && preg_match( '/^[0-9]+$/', $slug ) && $slug_num = intval( $slug ) ) {
+ $permastructs = array_values( array_filter( explode( '/', get_option( 'permalink_structure' ) ) ) );
+ $postname_index = array_search( '%postname%', $permastructs );
+
+ /*
+ * Potential date clashes are as follows:
+ *
+ * - Any integer in the first permastruct position could be a year.
+ * - An integer between 1 and 12 that follows 'year' conflicts with 'monthnum'.
+ * - An integer between 1 and 31 that follows 'monthnum' conflicts with 'day'.
+ */
+ if ( 0 === $postname_index ||
+ ( $postname_index && '%year%' === $permastructs[ $postname_index - 1 ] && 13 > $slug_num ) ||
+ ( $postname_index && '%monthnum%' === $permastructs[ $postname_index - 1 ] && 32 > $slug_num )
+ ) {
+ $conflicts_with_date_archive = true;
+ }
+ }
+
+ /**
+ * Filters whether the post slug would be bad as a flat slug.
+ *
+ * @since 3.1.0
+ *
+ * @param bool $bad_slug Whether the post slug would be bad as a flat slug.
+ * @param string $slug The post slug.
+ * @param string $post_type Post type.
+ */
+ if ( $post_name_check || in_array( $slug, $feeds ) || 'embed' === $slug || $conflicts_with_date_archive || apply_filters( 'wp_unique_post_slug_is_bad_flat_slug', false, $slug, $post_type ) ) {
+ $suffix = 2;
+ do {
+ $alt_post_name = _truncate_post_slug( $slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+ $post_name_check = $wpdb->get_var( $wpdb->prepare( $check_sql, $alt_post_name, $post_type, $post_ID ) );
+ $suffix++;
+ } while ( $post_name_check );
+ $slug = $alt_post_name;
+ }
+ }
+
+ /**
+ * Filters the unique post slug.
+ *
+ * @since 3.3.0
+ *
+ * @param string $slug The post slug.
+ * @param int $post_ID Post ID.
+ * @param string $post_status The post status.
+ * @param string $post_type Post type.
+ * @param int $post_parent Post parent ID
+ * @param string $original_slug The original post slug.
+ */
+ return apply_filters( 'wp_unique_post_slug', $slug, $post_ID, $post_status, $post_type, $post_parent, $original_slug );