/** * Internal function used by get_tree() */ private function add_subtree($targets, $level, $catid, $visible) { $subcats = Category::load(null, null, null, $catid, $visible); if (!empty($subcats)) { foreach ($subcats as $cat) { $targets[] = array($cat->get_id(), $cat->get_name(), $level + 1); $targets = Category::add_subtree($targets, $level + 1, $cat->get_id(), $visible); } } return $targets; }