Description:
------------
I found that if there is an ob_start() function which is calledback with it optional 'output_callback' argument in a PHP5 page non of Destructor method in exists objects can send any output to the standard output.

Reproduce code:
---------------
<?php
ob_start('ob_gzhandler');
class Test {
	function __construct() {
		echo 'Constructed <br />';
	}
	function __destruct() {
		echo 'Destructed <br />';
	}
}
$test = new Test();
?>

Expected result:
----------------
Constructed <br />Destructed <br />

Actual result:
--------------
Constructed <br />