public function getParam($paramName)
    {
        return !empty($this->_params[$paramName]) ? $this->_params[$paramName] : NULL;
    }
public function getParam($paramName)
    {
        return !empty($this->_params[$paramName]) ? $this->_params[$paramName] : NULL;
    }
public function getParam ( $ paramName ) { return ! empty ( $ this -> _params [ $ paramName ] ) ? $ this -> _params [ $ paramName ] : NULL ; }
Get a single parameter.

@param string $paramName

@return string|array
Get a single parameter .