PHP Soap with Crowd wsdl - php

Question

I am trying to write a code for sso login with crowd in my custom php application. I trying to to do that with SOAP. I am in a early stage now and was going through the documentation of how to connect php soap with wsdl. But i seem to be stuck very deep as i dont know what should be done next.
<?php
class test {
function authenticateApplication()
{
$client = new SoapClient("http://localhost:8095/crowd/services/SecurityServer?wsdl");
$param = array('in0' => array('credential' => 'password','name' => 'app'));
$resp=$client->authenticateApplication($param);
$token = $resp->out->token;
print_r($resp);
}
}
$t= new test;
$t->authenticateApplication();
I Dont know whats wrong with this code. I have referred it online and it seems to be correct but when i am tring to run this program i am getting this error
Fatal error: Uncaught SoapFault exception: [soap:Client] The validated object is null in /var/www/html/badebade/soaptest.php:7 Stack trace: #0 /var/www/html/badebade/soaptest.php(7): SoapClient->__call('authenticateApp...', Array) #1 /var/www/html/badebade/soaptest.php(7): SoapClient->authenticateApplication(Array) #2 /var/www/html/badebade/soaptest.php(13): test->authenticateApplication() #3 {main} thrown in /var/www/html/badebade/soaptest.php on line 7
A little help will be much appreciated as this program authenticates the application in crowd wsdl and returns the token. Can someone help me to achieve it.

Answer 1

function Find($request) {
try {
$soapClient = new SoapClient('wsdl.wsdl', array('trace' => 1));
$results = $soapClient->authenticateApplication($request);
return $results;
}
catch(SoapFault $ex) {
print $ex->getMessage();
echo '<HR>';
print $ex->getTraceAsString();
echo '<HR>';
echo $ex->getLine();
}
}
$results = Find($params);