// include the class:
include('nusoap.php');
//
// instantiate a new soap client:
$soapclient = new soapclient("http://api.google.com/search/beta2");
//
// send the query off to the server, with our 
// parameters and using the 'doGoogleSearch' method 
$searchresults = $soapclient->call("doGoogleSearch", $params,
"urn:GoogleSearch", "urn:GoogleSearch");