evseevnn\Cassandra\Protocol\BinaryData::getBigInt PHP Метод

    private function getBigInt()
    {
        if (!($value = intval($this->value))) {
            trigger_error('BigInt value ' . $value . ' not an int', E_USER_ERROR);
        }
        $highMap = 1.8446744069414584E+19;
        $lowMap = 0xffffffff;
        $higher = ($value & $highMap) >> 32;
        $lower = $value & $lowMap;
        return pack('NN', $higher, $lower);
    }