Get value of XML element from a HTTP Socket response

I have controller that send request using HTTP Socket and give response in xml format. I am using cakephp 2.6. Here is my code to get response body:

    $HttpSocket = new HttpSocket();            
    $response = $HttpSocket->request($request);
    $resulthit = $response->body;

When I try print the response body it return like this in my browser:

-2201502101153512eFXcByWLUHvQmYC0EHMn2JVxcpyzozBcek uid dan pwd

But when I try see the source of page:

<pre><? xml version="1.0" ?><PUSH><STATUS>-2</STATUS><SMSCMESSAGEID>20150210133953</SMSCMESSAGEID><GUID>knDlIBuUZf6zixlhbbxxLoxhEUGZTWPD</GUID><MSG>cek uid dan pwd</MSG></PUSH></pre>

My problem is How I can get value of XML element above? in this case I want the STATUS and GUID

I already try

$xml = new SimpleXMLElement($resulthit);

But only get error in return say that "String could not be parsed as XML"