Returns a different result on a 32-bit platform vs 64-bit

[romanrm]

With a code like this:

echo Tuupola\Base85Proxy::encode(md5("test", true)), "\n";

amd64:

$'/lH7Np6%b2,mG-7?1o

armv7el:

$'/lH7Np6%epLbF-7?1o

PHP 7.4 on both.

--
Just reported a similar bug to another base85 package: scottchiefbaker/php-base85#2
that one has a more severe problem. "unpack" is problematic on 32-bit vs 64-bit, yours almost works, but also couldn't escape it.

[tuupola]

I wonder which result is correct. I would guess the 64-bit one.

[tuupola]

Might also be related to this: #7

[romanrm]

Yes the 64-bit value is correct.
See some investigation on the other bug report, and some suggestions in PHP doc comments:
scottchiefbaker/php-base85#2 (comment)
https://www.php.net/manual/en/function.unpack.php#106041