Improper long path support for relative paths

[lunter2]

Description

The following code:

<?php
 chdir('C:\\');print(getcwd()); // C:\ (ok)

 var_dump(mkdir('C:\\'.str_repeat('a',255))); // true (absolute path - directory name with 255 characters created)
 var_dump(mkdir(str_repeat('b',255))); // false (relative path - directory name with 255 characters NOT created - max 247 characters works)
?>

Resulted in this output:

C:\
bool(true)
bool(false)

But I expected this output instead:

C:\
bool(true)
bool(true)

PHP Version

PHP 8.2.4

Operating System

Windows 10 Pro 22H2 (10.0.19045.2788)

[iluuu1994]

Are expected and actual result reversed here?

[lunter2]

I corrected it.

[nielsdos]

I tried to reproduce this on my Windows VM (Win10 22H2 so same as yours). I cannot reproduce this behaviour (I tried both with LongPathsEnabled 0 and 1).
Are you sure the reproduction code works on its own and is correct (*)? Can you also try this with extensions disabled (php -n)?. How long is the path of the current working directory, maybe that has some influence?

(*) I can't create a file/directory with 256 or more characters. But in that case the behaviour of mkdir and file_put_contents is the same.

[lunter2]

I change test script. Try again.