/**
* Is property defined?
*
* @param string property name
*
* @return bool
*/
public function __isset($key)
{
return isset($this->data[$key]) || parent::__isset($key);
}
parent::__get($key);}else{return$this->data[$key];}}function
__isset($key){return
isset($this->data[$key])||parent::__isset($key);}function
