Description:
------------
The output buffer stops working if:
1) the output buffer was started with ob_start('ob_gzhandler');
2) a ob_clean() call is made from within a function.

Any subsequent ob_flush()/ob_end_flush()/ob_get_contents(), ect results in nothing being returned.

Bug #24951 seems to be similar to the problem I'm having. I'll run similar tests and report back the results, unless the issue is positivly identified before I finish the tests.

Reproduce code:
---------------
<?php
ob_start('ob_gzhandler');
echo "Shouldn't be displayed<br>";
test("Should be displayed<br>\n");
echo "Should be displayed too<br>";
ob_end_flush();

function test($str)
{
	ob_clean();
	echo $str;
}
?>

Expected result:
----------------
Should be displayed<br>
Should be displayed too<br>