PHP SoapClient "Body must be present in a SOAP envelope" error - php

Question

I faced with very strange issue when tried to use PHP SoapClient for this service http://bws.neteven.com/NWS/2.
I have to setup an authentication header. Request body should be empty. The code, which I used is below:
$client = new SoapClient("http://bws.neteven.com/NWS/2", array("trace" => 1, "exception" => 1));
$auth = array(//the params are not valid of course
'Method' => 'TestConnection',
'Login' => 'login',
'Seed' => 'seed',
'Stamp' => 'stamp',
'Signature' => 'signature'
);
$client->__setSoapHeaders(new SoapHeader('auth', 'AuthenticationHeader', $auth));
$client->__soapCall('TestConnection',array(null));
After that I used $client->__getLastRequest() to see what is final XML of the request. However I can see that the header and body params were not setup properly.
$client->__getLastRequest() outputs plain text like this:
MethodTestConnectionLoginloginSeedseedStampstampSignaturesignature
Which doesn't look like valid XML. So of course I get SoapFault exception with the text "Body must be present in a SOAP envelope".
Does anybody knows why header and body are not wrapped by required XML tags?
Any issue in the code? Because I saw lots of examples of PHP SoapClient usage with the same approach. In addition I tried a few test WSDL services and had valid requests and responses there.
Could it be a problem of provided WSDL schema?
Or a problem of my server configuration? I use PHP 5.6.3, php_soap extension is enabled.
Hope you guys can help me. Any your thoughts would be really appreciated.
Thank you.

Answer 1

The code example I found has a different URL...
http://bws.neteven.com/NWS/2 vs http://ws.neteven.com/NWS
$client = new SoapClient("http://ws.neteven.com/NWS", array("trace" => 1, "exception" => 1));
$auth = array(//the params are not valid of course
'Method' => 'TestConnection',
'Login' => 'login',
'Seed' => 'seed',
'Stamp' => 'stamp',
'Signature' => 'signature'
);
$client->__setSoapHeaders(new SoapHeader('auth', 'AuthenticationHeader', $auth));
$client->__soapCall('TestConnection',array(null));
Also, you can call methods like this without using __soapCall (even though it would be doing the same thing).
$result = $client->echo(array("EchoInput" => "ReturnMe"));
var_dump($result->EchoOutput);
$result = $client->TestConnection();
var_dump($result->TestConnectionResult);