Description:
------------
---
From manual page: http://www.php.net/function.require-once
---
Where PHP filename includes "µ" character, for example; calling "require_once" on 
that file results in an error message (require fails). Similar paths/filenames 
without the special ASCII characters work under the same (Windows/XAMPP) 
installation, and identical paths/filenames including the special characters work 
under Linux.

Test script:
---------------
(Create a file called "microtime.php" and another file called "µTIME.php", and put them in the C:/ drive root folder, or some other place where PHP files may be included from.)
~~~
require_once('C:/microtime.php');//works
require_once('C:/µTIME.php');//results in error message, but only under Windows.

Expected result:
----------------
PHP file included.

Actual result:
--------------
ERROR MESSAGE:
~~~
Warning: require_once(C:/htdocs/[path_hidden]/µTIME.php): failed to open stream: 
No such file or directory in C:\htdocs\[path_hidden]\[filename_hidden].php on line 
...