--TEST--
Read $ownerElement with null parent.
--CREDITS--
Travis Pew
# TestFest Atlanta 2009-05-14
--EXTENSIONS--
dom
--FILE--
<?php

$document = new DOMDocument;
$root = $document->createElement('root');
$document->appendChild($root);
$attr = $root->setAttribute('category', 'books');
$document->removeChild($root);
$root = null;
var_dump($attr->ownerElement);
?>
--EXPECT--
NULL