Description:
------------
file_exists() fails for files on network share. Although these files can be perfectly read by e.g. file_get_contents(). So these files really do exist!

file_exists() works without problems for files not on a share such as 'C:\Program Files\PHP\php.ini'.

Can reproduce also with '\\\\.HOST\\SHARED FOLDERS\\data\\php.ini'

Using php 5.3.0 (VC9 x86 Non Thread Safe (2009-Jun-30 08:52:54)) on windows XP Pro SP3.

safe_mode is off.

This is tested on windows console (cmd.exe). User is admin and is allowed to go and read files on this share.

Reproduce code:
---------------
$file = '//.HOST/SHARED FOLDERS/data/php.ini';

error_log(substr(file_get_contents($file),0,100));

if (file_exists($file)) {
	error_log("does exist");
} else {
	error_log("does not exist");
}



Expected result:
----------------
First 100 characters of php.ini file + 'does exist'


Actual result:
--------------
First 100 characters of php.ini file + 'does not exist'