--TEST-- Bug #38850 (lookupNamespaceURI does not return default namespace) --SKIPIF-- <?php require_once('skipif.inc'); ?> --FILE-- <?php $xml = <<<HERE <?xml version="1.0" ?> <foo xmlns="http://www.example.com/ns/foo" /> HERE; $doc = new DOMDocument(); $doc->loadXML($xml); $root = $doc->documentElement; print $root->lookupNamespaceURI(NULL); ?> --EXPECT-- http://www.example.com/ns/foo