function read64_int($db) {
        $first = reset(unpack('N', fread($db, 4)));
        $second = reset(unpack('N', fread($db, 4)));

        // Get whether -ve
        $negative = (bool)($first & 128);

        // Strip the sign
        $first &= 127;

        // Add the two
        $result = ($first << 8) + $second;

        // Make it -ve if we need to
        if ($negative)
                $result *= -1;

        // Return
        return $result;
}