/** * Specify data which should be serialized to JSON * @link http://php.net/manual/en/jsonserializable.jsonserialize.php * @return mixed data which can be serialized by <b>json_encode</b>, * which is a value of any type other than a resource. * @since 5.4.0 */ public function jsonSerialize() { $arr = parent::jsonSerialize(); $vars = get_object_vars($this); return array_merge($vars, $arr); }