note 45863 added to function.dom-domxpath-registernamespace

Here is a working code sample: $s =<<<EOT <rootname xmlns="http://www.some.org/" xml:lang="en-US"> <childnode>Some text</childnode> </rootname> EOT; $xml = DOMDocument::loadXML( $s); $objectXPath = new DOMXPath($xml); # this returns nothing $NodeList = $objectXPath->query("/rootname/childnode"); echo "Length /rootname/childnode {$NodeList->length}<br>\n"; $objectXPath->registerNamespace( 'pre', "http://www.some.org/"); # this returns what you expect $NodeList = $objectXPath->query("/pre:rootname/pre:childnode"); echo "Length /pre:rootname/pre:childnode {$NodeList->length}<br>\n"; Run it and you get: Length /rootname/childnode 0 Length /pre:rootname/pre:childnode 1 ---- Manual Page -- http://www.php.net/manual/en/function.dom-domxpath-registernamespace.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+45863 Delete -- http://master.php.net/manage/user-notes.php?action=delete+45863&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+45863&report=yes Search -- http://master.php.net/manage/user-notes.php