public static function hash($data) {
        
        if(false === is_string($data) && false === is_numeric($data)) {
            return trigger_error(sprintf('Argument 1 passed to %s() must be of the type string or number, "%s" given', __METHOD__, gettype($data)), E_USER_ERROR);
        }

        return hash(self :: HASH_ALGORITHM, $data);
    }