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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
242 | } |
243 | } else { |
244 | wp_cache_delete($object_id, $meta_type . '_meta'); |
245 | } |
246 |
|
247 | do_action( "deleted_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value ); |
248 |
|
249 | // Old-style action. |
250 | if ( 'post' == $meta_type ) |
251 | do_action( 'deleted_postmeta', $meta_ids ); |
252 |
|
253 | return true; |
254 | } |
255 |
|
256 | /** |
257 | * Retrieve metadata for the specified object. |
258 | * |
259 | * @since 2.9.0 |
260 | * |