public function __isset($propName)
	{
		$methodName = 'isset' . ucfirst($propName);
		if (method_exists($this, $methodName))
		{
			return $this->$methodName();
		}

		return isset($this->$propName);
	}
public function __isset($propName)
	{
		$methodName = 'isset' . ucfirst($propName);
		if (method_exists($this, $methodName))
		{
			return $this->$methodName();
		}

		return isset($this->$propName);
	}
public function __isset ( $ propName ) { $ methodName = 'isset' . ucfirst ( $ propName ) ; if ( method_exists ( $ this , $ methodName ) ) { return $ this -> $ methodName ( ) ; } return isset ( $ this -> $ propName ) ; }
Test whether a property is set

@param  string $propName
@return bool
Test whether a property is set