SoapClient XML使用simpleXML返回字符串

So I'm getting an xml file back from a soap service (of which I have no control over). It's returning back an xmlns which is causing simpleXML issues. I'm running a str_replace to get rid of that issue, however now simpleXML just returns an empty object. XML structure appears to be fine, no errors just an empty object.So I'm getting an xml file back from a soap ser