src/GoogleAuthenticator.php
private function hashToInt(string $bytes, int $start): int
    {
        $input = substr($bytes, $start, strlen($bytes) - $start);
        $val2 = unpack('N', substr($input, 0, 4));

        return $val2[1];
    }
private function hashToInt(string $bytes, int $start): int
    {
        $input = substr($bytes, $start, strlen($bytes) - $start);
        $val2 = unpack('N', substr($input, 0, 4));

        return $val2[1];
    }
@param string $bytes
@param int    $start

@return int