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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.
This hook occurs 2 times in this file.
Line | Code |
---|---|
258 | * object type (comment, post, or user). |
259 | * |
260 | * @since 2.9.0 |
261 | * |
262 | * @param int $meta_id ID of updated metadata entry. |
263 | * @param int $object_id Object ID. |
264 | * @param string $meta_key Meta key. |
265 | * @param mixed $meta_value Meta value. |
266 | */ |
267 | do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); |
268 |
|
269 | if ( 'post' == $meta_type ) { |
270 | /** |
271 | * Fires immediately after updating a post's metadata. |
272 | * |
273 | * @since 2.9.0 |
274 | * |
275 | * @param int $meta_id ID of updated metadata entry. |
276 | * @param int $object_id Object ID. |
Line | Code |
667 | // Run the update query, all fields in $data are %s, $where is a %d. |
668 | $result = $wpdb->update( $table, $data, $where, '%s', '%d' ); |
669 | if ( ! $result ) |
670 | return false; |
671 |
|
672 | // Clear the caches. |
673 | wp_cache_delete($object_id, $meta_type . '_meta'); |
674 |
|
675 | /** This action is documented in wp-includes/meta.php */ |
676 | do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); |
677 |
|
678 | if ( 'post' == $meta_type ) { |
679 | /** This action is documented in wp-includes/meta.php */ |
680 | do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value ); |
681 | } |
682 |
|
683 | return true; |
684 | } |
685 |
|