webservice有关问题，soap有关问题，响应有关问题-求大神！大神在哪

$soap = new SoapClient(“http://xxxxxxxxxWSDL”);
$xml = $soap->GetInfo($param);

try {
  $soap = new SoapClient("http://......?WSDL");
  $param = array();
  $xml = $soap->GetInfo($param);
} catch (Exception $e) {
  echo $e->getMessage(); //如果出现错误，都会到达这里
}