WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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.
This hook occurs 2 times in this file.
Line | Code |
---|---|
344 | * object type (comment, post, or user). |
345 | * |
346 | * @since 3.1.0 |
347 | * |
348 | * @param array $meta_ids An array of metadata entry IDs to delete. |
349 | * @param int $object_id Object ID. |
350 | * @param string $meta_key Meta key. |
351 | * @param mixed $meta_value Meta value. |
352 | */ |
353 | do_action( "delete_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value ); |
354 |
|
355 | // Old-style action. |
356 | if ( 'post' == $meta_type ) { |
357 | /** |
358 | * Fires immediately before deleting metadata for a post. |
359 | * |
360 | * @since 2.9.0 |
361 | * |
362 | * @param array $meta_ids An array of post metadata entry IDs to delete. |
Line | Code |
663 | // object and id columns |
664 | $column = sanitize_key($meta_type . '_id'); |
665 | $id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id'; |
666 |
|
667 | // Fetch the meta and go on if it's found. |
668 | if ( $meta = get_metadata_by_mid( $meta_type, $meta_id ) ) { |
669 | $object_id = $meta->{$column}; |
670 |
|
671 | /** This action is documented in wp-includes/meta.php */ |
672 | do_action( "delete_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value ); |
673 |
|
674 | // Old-style action. |
675 | if ( 'post' == $meta_type || 'comment' == $meta_type ) { |
676 | /** |
677 | * Fires immediately before deleting post or comment metadata of a specific type. |
678 | * |
679 | * The dynamic portion of the hook, $meta_type, refers to the meta |
680 | * object type (post or comment). |
681 | * |