This is what I am after
somevalue2
$xmlTest = new \SimpleXMLElement(' ', LIBXML_NOERROR, false, 'ws', true);
$xmlTest->addAttribute('xmlns:xmlns:ws', 'http://url.to.namespace');
$xmlTest->addChild("ws:somename2", "somevalue2", 'http://microsoft.com/wsdl/types/');
$make = $xmlTest->addChild('ws:make', null, 'ws');
#$make->addAttribute('name','Ford');
$make->addChild('ws:model', 'foo', 'ws');
$make->addChild('ws:model', 'bar', 'ws');