Short-circuits deleting metadata of a specific type.
Description
The dynamic portion of the hook name, $meta_type, refers to the meta object type (post, comment, term, user, or any other type with an associated meta table).Returning a non-null value will effectively short-circuit the function. Possible hook names include: <ul> <li>delete_post_metadata</li> <li>delete_comment_metadata</li> <li>delete_term_metadata</li> <li>delete_user_metadata</li> </ul>
Parameters
$deletenull|bool
Whether to allow metadata deletion of the given type.
$object_idint
ID of the object metadata is for.
$meta_keystring
Metadata key.
$meta_valuemixed
Metadata value. Must be serializable if non-scalar.
$delete_allbool
Whether to delete the matching metadata entries for all objects, ignoring the specified $object_id. Default false.
428* @param string$meta_key Metadata key.429* @param mixed$meta_value Metadata value. Must be serializable if non-scalar.430* @param bool$delete_all Whether to delete the matching metadata entries431*for all objects, ignoring the specified$object_id.432*Defaultfalse.433*/434$check=apply_filters("delete_{$meta_type}_metadata",null,$object_id,$meta_key,$meta_value,$delete_all);435if(null!==$check){436return(bool)$check;437}438439$_meta_value=$meta_value;440$meta_value=maybe_serialize($meta_value);
History
Introduced in 3.1.0. Unchanged from 6.7.7 through 7.1.0.