Description:
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When I use Apache 2.2.14 + PHP 5.3 standalone and request such script directly by name it doesn't start (at least with mod_php), but in log files I see something like:
[error] [client 127.0.0.1] PHP Fatal error: Unknown: Failed opening required 'E:/www/test2/\xd0\x9d\xd0\xbe\xd0\xb2\xd0\xbe\xd1\x81\xd1\x82\xd0\xb8.php' (include_path='.;C:\\php5\\pear') in Unknown on line 0, referer: http://test2.ru/

I discovered this is because PHP doesn't translate UTF-8 filename passed from Apache to coding (Unicode-16?) used by Windows, and thus can't open it. It works perfectly on Linux as Apache, PHP & Linux filesystem use same UTF-8...

Having this feature is useful for creating SEO-optimized sites with URLs containing keywords. I don't ask to fix Unicode in general, but at least for Windows, where it's known Apache will receive link as UTF-8 and pass it as is to PHP, we can translate it into correct encoding before calling system functions. I guess this is couple lines of code for Windows build.

Reproduce code:
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1. take any .php script and rename it to any name with UTF-8 2 byte+ symbols. I used russian ???????.php.
2. Configure Apache on Windows to use PHP as module (loadmodule)
3. Try to request this script from browser



Expected result:
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Script won't load with 500 code. However, it runs when it's name has only ASCII characters.

Actual result:
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[error] [client 127.0.0.1] PHP Fatal error: Unknown: Failed opening required 'E:/www/test2/\xd0\x9d\xd0\xbe\xd0\xb2\xd0\xbe\xd1\x81\xd1\x82\xd0\xb8.php' (include_path='.;C:\\php5\\pear') in Unknown on line 0, referer: http://test2.ru/