private function getParam($param, $default = null)
    {
        if (isset($this->query[$param])) {
            return $this->query[$param];
        } else {
            return $default;
        }
    }
private function getParam($param, $default = null)
    {
        if (isset($this->query[$param])) {
            return $this->query[$param];
        } else {
            return $default;
        }
    }
private function getParam ( $ param , $ default = null ) { if ( isset ( $ this -> query [ $ param ] ) ) { return $ this -> query [ $ param ] ; } else { return $ default ; } }
Returns parameter's value from query

@param string $param
@param mixed $default
@return string
Returns parameter s value from query