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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 |
---|---|
517 | * - `deleted_user_meta` |
518 | * |
519 | * @since 2.9.0 |
520 | * |
521 | * @param string[] $meta_ids An array of metadata entry IDs to delete. |
522 | * @param int $object_id ID of the object metadata is for. |
523 | * @param string $meta_key Metadata key. |
524 | * @param mixed $_meta_value Metadata value. |
525 | */ |
526 | do_action( "deleted_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value ); |
527 |
|
528 | // Old-style action. |
529 | if ( 'post' === $meta_type ) { |
530 | /** |
531 | * Fires immediately after deleting metadata for a post. |
532 | * |
533 | * @since 2.9.0 |
534 | * |
535 | * @param string[] $meta_ids An array of metadata entry IDs to delete. |
Line | Code |
1054 | } |
1055 |
|
1056 | // Run the query, will return true if deleted, false otherwise. |
1057 | $result = (bool) $wpdb->delete( $table, array( $id_column => $meta_id ) ); |
1058 |
|
1059 | // Clear the caches. |
1060 | wp_cache_delete( $object_id, $meta_type . '_meta' ); |
1061 |
|
1062 | /** This action is documented in wp-includes/meta.php */ |
1063 | do_action( "deleted_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value ); |
1064 |
|
1065 | // Old-style action. |
1066 | if ( 'post' === $meta_type || 'comment' === $meta_type ) { |
1067 | /** |
1068 | * Fires immediately after deleting post or comment metadata of a specific type. |
1069 | * |
1070 | * The dynamic portion of the hook name, `$meta_type`, refers to the meta |
1071 | * object type (post or comment). |
1072 | * |