Description:
------------
I use register_shutdown_function to simulate a destructor, but, in this destructor, I cannot check if a file exist, this function (file_exists) like is_reading, is_file ... always return FALSE... To verify if it's a problem with my file, I put the same check in the constructor, and it work, the file exist, so, I put clearstatcache() in the constructor to remove file information in the cache because, in the destructor, php will say, that file exist, I saw it before, but PHP will not really check if the file exist.

BUT, if, in the destructor, I put the absolute path to check the file (like E:/tpls/debug.tpl), the destructor see the file... WHY ???

Reproduce code:
---------------
<?php
class test
{
	function test()	{
	if (file_exists('tpls/debug.tpl')) {
		clearstatcache(); 
		echo 'CONSTRUCTOR: FILE > TRUE';
	} else {
		echo 'CONSTRUCTOR: FILE > FALSE';
		}
	register_shutdown_function(array(&$this,'_test'));
	}

	function _test() {
	if (file_exists('tpls/debug.tpl')) { 
		echo ' DESTRUCTOR: FILE > TRUE';
	} else {
		echo ' DESTRUCTOR: FILE > FALSE';
		}
	}
}

$test =& new test();
?>

Expected result:
----------------
CONSTRUCTOR: FILE > TRUE DESTRUCTOR: FILE > TRUE

Actual result:
--------------
CONSTRUCTOR: FILE > TRUE DESTRUCTOR: FILE > FALSE