protected function operatorName($operator)
    {
        if (isset($this->_operatorNames[$operator])) {
            return $this->_operatorNames[$operator];
        }
        return strtolower($operator);
    }
protected function operatorName($operator)
    {
        if (isset($this->_operatorNames[$operator])) {
            return $this->_operatorNames[$operator];
        }
        return strtolower($operator);
    }
protected function operatorName ( $ operator ) { if ( isset ( $ this -> _operatorNames [ $ operator ] ) ) { return $ this -> _operatorNames [ $ operator ] ; } return strtolower ( $ operator ) ; }
Try to find a nice operator name.

@param string $operator

@return string
Try to find a nice operator name .