How to open file in PHP that has unicode characters in its name?

Question

For example I have a filename like this - проба.xml and I am unable to open it from PHP script.

If I setup php script to be in utf-8 than all the text in script is u

Answer 1

These are conclusions so far:

1. PHP 5 can not open filename with unicode characters unless the source filename is unicode.
2. PHP 5 (at least on windows XP) is not able to process PHP source in unicode.

Thus the conclusion this not doable in PHP 5.