get data from xml url using php

Actually I am trying to get data from xml url using php but its not working for me. Please check what is wrong in my code.

$result_xml  = simplexml_load_file("http://ift.tt/1seM595");

echo $result_xml->GeocodeResponse->result->formatted_address;

I want to get "formatted_address" from xml file. Please help.

Many Thanks,