Description:
------------
The directory functions, namely:

opendir();
readdir();
scandir();

only reads english filenames/folders and not chinese and possibly other languages

Ref: http://bugs.php.net/bug.php?id=30195

Reproduce code:
---------------
<?php

$path = "C:/"; // path to file on windows pc
$dir = opendir($path);

while (false !== ($f = readdir($dir)) )
{
	echo $f . "<br />";
}

?>

Expected result:
----------------
Whatever filenames that is in that folder I requested for

Actual result:
--------------
If there are chinese filenames, it'll display as question marks. Not sure about others. I tried reencoding/sending the proper headers too.