December 13, 2011 
Definition:
function metadata_exists( $meta_type, $object_id, $meta_key ) {}
Determine if a meta key is set for a given object
Parameters
- string $meta_type: Type of object metadata is for (e.g., comment, post, or user)
- int $object_id: ID of the object metadata is for
- string $meta_key: Metadata key.
Return values
returns:true of the key is set, false if not.
Defined filters
- get_{$meta_type}_metadata
apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, true )
Source code
function metadata_exists( $meta_type, $object_id, $meta_key ) {
if ( ! $meta_type )
return false;
if ( ! $object_id = absint( $object_id ) )
return false;
$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, true );
16783
A HitchHackers guide through WordPress 
No comments yet... Be the first to leave a reply!