Calling a webservice

I’m a beginner in php and want to call a webservice to my wordpress site
I installed PHP Snippet plugin and created a new snippet to put my php code which call the asp webservice the code is:

<?php
$client = new SoapClient("http://193.227.49.25/misws/mis_service_1.asmx?WSDL");
$response = $client->__soapCall(GetCount);
var_dump($response);
 ?>

and I put the shortcode in my page but it returns “The site is experiencing technical difficulties.”
please any help 🙁