/** * Gets tags from this group * * @return array */ public function get_tags() { if (!is_array($this->tags)) { require_once dirname(__FILE__) . '/Tags.class.php'; $tags_list = new Tags_list(); $this->tags = $tags_list->get_tags_by_group_id($this->id); if (!is_array($this->tags)) { $this->tags = array(); } } return $this->tags; }