Description:
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filesize() returns '0' with any file and does not raise an error even though error_reporting is enabled. Also keep in note that I am using the software bundle named "XAMPP" and have upgraded the version of PHP 4. I've also checked the existance of the file. I can include the file using include() perfectly, however filesize() only returns 0 but not an error. When I change $filename to an invalid filename, filesize() does produce an error. I've also tried clearstatcache() and it made no difference.

Reproduce code:
---------------
class classname
{
  function somefunction()
  {
    $filename = "tpl/default/nav.inc.php";
    $handle = fopen($filename, 'r'); // Works (doesn't return FALSE)
    $content = fread($handle,filesize($filename)); // fails because filesize() returns 0.
  }
}

Expected result:
----------------
Contents of the file

Actual result:
--------------
Warning:  fread() [function.fread]: Length parameter must be greater than 0. in C:\Program Files\xampp\htdocs\KeenManager\include\core.php on line 1411
(Where line 1411 is: $content = fread($handle,filesize($filename));