delete_metadata_by_mid( string $meta_type, int $meta_id )
Delete meta data by meta ID
描述
参数
- $meta_type
-
(string)
(Required)
Type of object metadata is for (e.g., comment, post, term, or user). - $meta_id
-
(int)
(Required)
ID for a specific meta row
返回值
(bool) True on successful delete, false on failure.
源代码
File: wp-includes/meta.php
function delete_metadata_by_mid( $meta_type, $meta_id ) {
global $wpdb;
// Make sure everything is valid.
if ( ! $meta_type || ! is_numeric( $meta_id ) || floor( $meta_id ) != $meta_id ) {
return false;
}
$meta_id = intval( $meta_id );
if ( $meta_id <= 0 ) {
return false;
}
$table = _get_meta_table( $meta_type );
if ( ! $table ) {
return false;
}
// object and id columns
$column = sanitize_key($meta_type . '_id');
$id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id';
// Fetch the meta and go on if it's found.
if ( $meta = get_metadata_by_mid( $meta_type, $meta_id ) ) {
$object_id = $meta->{$column};
/** This action is documented in wp-includes/meta.php */
do_action( "delete_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value );
// Old-style action.
if ( 'post' == $meta_type || 'comment' == $meta_type ) {
/**
* Fires immediately before deleting post or comment metadata of a specific type.
*
* The dynamic portion of the hook, `$meta_type`, refers to the meta
* object type (post or comment).
*
* @since 3.4.0
*
* @param int $meta_id ID of the metadata entry to delete.
*/
do_action( "delete_{$meta_type}meta", $meta_id );
}
// Run the query, will return true if deleted, false otherwise
$result = (bool) $wpdb->delete( $table, array( $id_column => $meta_id ) );
// Clear the caches.
wp_cache_delete($object_id, $meta_type . '_meta');
/** This action is documented in wp-includes/meta.php */
do_action( "deleted_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value );
// Old-style action.
if ( 'post' == $meta_type || 'comment' == $meta_type ) {
/**
* Fires immediately after deleting post or comment metadata of a specific type.
*
* The dynamic portion of the hook, `$meta_type`, refers to the meta
* object type (post or comment).
*
* @since 3.4.0
*
* @param int $meta_ids Deleted metadata entry ID.
*/
do_action( "deleted_{$meta_type}meta", $meta_id );
}
return $result;
}
// Meta id was not found.
return false;
}
更新日志
Version | 描述 |
---|---|
3.3.0 | Introduced. |
相关函数
Uses
-
wp-includes/cache.php:
wp_cache_delete() -
wp-includes/formatting.php:
sanitize_key() -
wp-includes/plugin.php:
do_action() -
wp-includes/wp-db.php:
wpdb::delete() -
wp-includes/meta.php:
_get_meta_table() -
wp-includes/meta.php:
get_metadata_by_mid() -
wp-includes/meta.php:
delete_{$meta_type}_meta -
wp-includes/meta.php:
delete_{$meta_type}meta -
wp-includes/meta.php:
deleted_{$meta_type}_meta -
wp-includes/meta.php:
deleted_{$meta_type}meta
Show 5 more uses
Hide more uses
Used By
-
wp-admin/includes/ms.php:
wpmu_delete_user() -
wp-admin/includes/user.php:
wp_delete_user() -
wp-admin/includes/post.php:
delete_meta() -
wp-includes/functions.php:
do_enclose() -
wp-includes/taxonomy.php:
wp_delete_term() -
wp-includes/post.php:
wp_delete_attachment() -
wp-includes/post.php:
wp_delete_post() -
wp-includes/class-wp-xmlrpc-server.php:
wp_xmlrpc_server::set_custom_fields() -
wp-includes/comment.php:
do_all_pings() -
wp-includes/comment.php:
wp_delete_comment()
Show 5 more used by
Hide more used by
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