registered_meta_key_exists( string $object_type, string $meta_key, string $object_subtype = '' )
Checks if a meta key is registered.
Parameters
- $object_type
-
(string) (Required) The type of object.
- $meta_key
-
(string) (Required) The meta key.
- $object_subtype
-
(string) (Optional) The subtype of the object type.
Default value: ''
Return
(bool) True if the meta key is registered to the object type and, if provided, the object subtype. False if not.
Source
File: wp-includes/meta.php
function registered_meta_key_exists( $object_type, $meta_key, $object_subtype = '' ) {
$meta_keys = get_registered_meta_keys( $object_type, $object_subtype );
return isset( $meta_keys[ $meta_key ] );
}
Changelog
| Version | Description |
|---|---|
| WP-4.9.8 | The $object_subtype parameter was added. |
| WP-4.6.0 | Introduced. |