php glob函数和非ascii字符

I am using php glob() function to find matching files in a directory.

glob("*.txt");

It works for filenames with ascii characters e.g. sports.txt, frys.txt etc. However, it does not work with filenames that contain non-ascii character such as pénètre.txt.

Any thoughts?

I tried to run this code to my local computer

<?php
foreach (glob("*.html") as $filename) {
  echo "$filename size " . filesize($filename) . "
<br>";
}
?>

and I included a file named pènétre as you wrote, but I got a clear output without any error:

cookie.html size 357 
pénètre.html size 7719

My PHP version is 1.6.2. Try to run this code as well and tell me if you experience any problem.