Description:
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is_dir() and is_file() (incorrectly) return true for any string larger than 255 characters.

I tried this on two different machines, with the out of the box, precompiled/downloaded Windows version of php 5.0.3.  No changes were made to the standard php.ini-dist.  No extra extensions were loaded.  We are using PHP as an Apache2 module (php2apache2.dll).  We also tried the latest CVS snapshot (5CVS-2004-12-30 (dev)) and got the same results. 

We tried, and could NOT reproduce this on Linux.  It only failed on windows platforms.  

Curiously (or maybe not so curious), file_exists() DOES work fine. 

Reproduce code:
---------------
<?
$myfilename="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccsssssssssssssssssssssssssssssssssssssssssssssaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccssssssssssssssssssssssssssssssssssssssssssssss";
echo "myfilename is: $myfilename";
echo "<br>myfilename is ".strlen($myfilename)." characters long";
echo "<br>is_dir: ".is_dir($myfilename);
echo "<br>file_exists: ".file_exists($myfilename);
echo "<br>is_file: ".is_file($myfilename);

$myfilename="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccsssssssssssssssssssssssssssssssssssssssssssssaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccssssssssssssssssssssssssssssssssssssssssssssss";
echo "<br><br>myfilename is: $myfilename";
echo "<br>myfilename is ".strlen($myfilename)." characters long";
echo "<br>is_dir: ".is_dir($myfilename);
echo "<br>file_exists: ".file_exists($myfilename);
echo "<br>is_file: ".is_file($myfilename);
?>

Expected result:
----------------
is_dir() and is_file() should return false if the file or directory does not exist, regardless of the length of the string they are passed.



Actual result:
--------------
Result for above script is:
myfilename is: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccsssssssssssssssssssssssssssssssssssssssssssssaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccssssssssssssssssssssssssssssssssssssssssssssss
myfilename is 255 characters long
is_dir:
file_exists:
is_file:

myfilename is: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccsssssssssssssssssssssssssssssssssssssssssssssaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccccccccccccssssssssssssssssssssssssssssssssssssssssssssss
myfilename is 256 characters long
is_dir: 1
file_exists: 1
is_file: