public function getMessageString($errorCode)
	{
		return isset($this->errorMessages[$errorCode]) ? $this->errorMessages[$errorCode] : null;
	}
public function getMessageString($errorCode)
	{
		return isset($this->errorMessages[$errorCode]) ? $this->errorMessages[$errorCode] : null;
	}
public function getMessageString ( $ errorCode ) { return isset ( $ this -> errorMessages [ $ errorCode ] ) ? $ this -> errorMessages [ $ errorCode ] : null ; }
Return message string by code

@param $errorCode
@return string|null
Return message string by code