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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 |
|---|---|
| 240 | } |
| 241 | } else { |
| 242 | wp_cache_delete($object_id, $meta_type . '_meta'); |
| 243 | } |
| 244 | |
| 245 | do_action( "deleted_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value ); |
| 246 | |
| 247 | // Old-style action. |
| 248 | if ( 'post' == $meta_type ) |
| 249 | do_action( 'deleted_postmeta', $meta_ids ); |
| 250 | |
| 251 | return true; |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * Retrieve metadata for the specified object. |
| 256 | * |
| 257 | * @since 2.9.0 |
| 258 | * |