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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 |
---|---|
280 | * object type (comment, post, term, or user). |
281 | * |
282 | * @since 2.9.0 |
283 | * |
284 | * @param int $meta_id ID of updated metadata entry. |
285 | * @param int $object_id Object ID. |
286 | * @param string $meta_key Meta key. |
287 | * @param mixed $_meta_value Meta value. |
288 | */ |
289 | do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); |
290 |
|
291 | if ( 'post' == $meta_type ) { |
292 | /** |
293 | * Fires immediately after updating a post's metadata. |
294 | * |
295 | * @since 2.9.0 |
296 | * |
297 | * @param int $meta_id ID of updated metadata entry. |
298 | * @param int $object_id Post ID. |
Line | Code |
740 | $result = $wpdb->update( $table, $data, $where, '%s', '%d' ); |
741 | if ( ! $result ) { |
742 | return false; |
743 | } |
744 |
|
745 | // Clear the caches. |
746 | wp_cache_delete( $object_id, $meta_type . '_meta' ); |
747 |
|
748 | /** This action is documented in wp-includes/meta.php */ |
749 | do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); |
750 |
|
751 | if ( 'post' == $meta_type ) { |
752 | /** This action is documented in wp-includes/meta.php */ |
753 | do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value ); |
754 | } |
755 |
|
756 | return true; |
757 | } |
758 |
|