Different versions of PHP output different results

[xmoer]

I tested "Base85" on PHP 5.X and PHP 7.X. The result of PHP 5.X seems to be abnormal. To find out the cause of the problem, I tested more text. The conclusion is as follows:

• Decoding all successful
• Encoding in PHP 5.X is abnormal
• English character encoding succeeded
• Japanese and Chinese character encoding is abnormal
• Invisible characters are generated, but the English part is normal

The problem seems to be in unpack("N*", $data) ?
I'm confused about it.

[tuupola]

Just to be sure, problem exists only with PHP 5.X?

[xmoer]

Just to be sure, problem exists only with PHP 5.X?

Yeah.