Travelport uAPI php SoapClient

[Luffy D]

I need to develop a PHP web based aplication using Travelport uAPI. I'm able to connect to the webservice using the function "curl_init()" writing all xml request, but I'm stuck trying to do it with SoapClient class.I'm using this example and doesn't work:http://demo.travelportuniversalapi.com/Home/SampleCodeI don't know what I'm doing wrong. Anyone knows a working sample code/project in PHP using SoapClient class? I've searched in the web, but I couldn't find anything in PHP.Thanks in advance people.