Short-circuits adding metadata of a specific type.
Description
The dynamic portion of the hook name, $meta_type, refers to the meta object type (blog, 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>add_blog_metadata</li> <li>add_post_metadata</li> <li>add_comment_metadata</li> <li>add_term_metadata</li> <li>add_user_metadata</li> </ul>
Parameters
$checknull|int|false
Whether to allow adding metadata for the given type. Return false or a meta ID to short-circuit the function. Return null to continue with the default behavior.
$object_idint
ID of the object metadata is for.
$meta_keystring
Metadata key.
$meta_valuemixed
Metadata value. Must be serializable if non-scalar.
$uniquebool
Whether the specified meta key should be unique for the object.
84* to short-circuit the function.Returnnull to continue with the default behavior.85* @param int$object_idID of the object metadata is for.86* @param string$meta_key Metadata key.87* @param mixed$meta_value Metadata value. Must be serializable if non-scalar.88* @param bool$unique Whether the specified meta key should be unique for the object.89*/90$check=apply_filters("add_{$meta_type}_metadata",null,$object_id,$meta_key,$meta_value,$unique);91if(null!==$check){92return$check;93}9495if($unique&&$wpdb->get_var(96$wpdb->prepare(
History
Introduced in 3.1.0. One change between 6.7.7 and 7.1.0.