WPINC_class wp walker.php Notes - WordPress-Thinstall/wordpress-develop GitHub Wiki

interface WalkerInterface {
    public function start_lvl( &$output, $depth = 0, $args = array() );
    public function end_lvl( &$output, $depth = 0, $args = array() );
    public function start_el( &$output, $object, $depth = 0, $args = array(), $current_object_id = 0 );
    public function end_el( &$output, $object, $depth = 0, $args = array() );
    public function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output );
    public function walk( $elements, $max_depth );
    public function paged_walk( $elements, $max_depth, $page_num, $per_page );
    public function get_number_of_root_elements( $elements );
    public function unset_children( $e, &$children_elements );
}