[php-src] Issue #8402: file_exists(): open_basedir restriction in effect

Issue: https://github.com/php/php-src/issues/8402 Comment Author: cmb69 Indeed, this is related to [bug 52065](https://bugs.php.net/bug.php?id=52065). This case is particularly about the wildcard character ? (* exhibits the same behavior). Since the algorithm to resolve the realpath (tsrm_realpath_r()) uses [FindFirstFileExW()](https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-findfirstfileexw), which inherently supports these wildcards, we [bail out early if a filename contains these characters](https://github.com/php/php-src/blob/8f02d7b7e499490312969cdfa9a3a81b9458595a/Zend/zend_virtual_cwd.c#L1100-L1104). This is correct per se, since such files can't exists, but then we hit the issue mentioned in the other bug report. So, in my opinion, this case (wildcards in the filename) is a documentation issue.