Object reference not set to an instance of an object error when trying SOAP call

php, soap, wsdl

Solution

Unbelievable ! It only took nine hours to write these 16 lines of code.

<?php
header("Content-Type: text/plain"); 

$userinfo = array(
    'Username'=>'test',
    'Password'=>'test'
);

$wsdl_url = 'https://ws-e-distribution.kmd.dk/standard/ServiceAutorisation/ServiceAutorisation.svc?wsdl';
$client = new SoapClient($wsdl_url, array('trace' => 1, "exception" => 0));

print_r($client->__getFunctions());
print_r($client->__getTypes());

//This actually works ! :) :) :)
$response = $client->LogOn(array('logon' => new SoapVar($userinfo, SOAP_ENC_OBJECT, 'LogOnUsername', 'http://schemas.datacontract.org/2004/07/WebServiceAutorisation.BL')));

var_dump($response);

I was so close several times, and it turned out the namespace (the URL) was the magic bit I was missing. I had been using the namespace from the main wsdl (or no namespace at all) in every attempt at using `SoapVar`'s.

Well now, on to the actual purpose of logging in, probably won't be any easier

Problem

I am trying to connect to and authenticate with a webservice using SOAP / wsdl, but I constantly get the error: ``` <b>Fatal error</b>: Uncaught SoapFault exception: [a:InternalServiceFault] Object reference not set to an instance of an object. in /path/install.php:16 ``` Below is my current code: ``` <?php header("Content-Type: text/plain"); $userinfo = array( 'Username'=>'test', 'Password'=>'test' ); $wsdl_url = 'https://ws-e-distribution.kmd.dk/standard/ServiceAutorisation/ServiceAutorisation.svc?wsdl'; $client = new SoapClient($wsdl_url); print_r($client->__getFunctions()); print_r($client->__getTypes()); //This is the problematic line: $response = $client->__soapCall('LogOn', array('LogOn' => $userinfo)); var_dump($response); ``` I have tried every possible way of wrapping the username and password parameters that I could conceive of or find anyone suggesting: - using a custom class - using a `stdClass` - using `SoapVar` - using `SoapParam` - using a simple array - double wrapped array - A lot of combinations of the above. And I've tried calling the function like `$client->__soapCall('LogOn', [milliontries])` as well as `$client->LogOn([milliontries])` ...nothing works, please help. Update: I finally managed to get a different error (that suggests at least I hit upon something slightly less wrong). My code now looks like this: ``` $response = $client->LogOn(array('logon' => array('Username' => 'test','Password' => 'test'))); ``` Which gives me an error about the `LogOnType` being unsupported (in Danish, which suggests to me that at least I have some sort of connection to the server now). The username and password array has no effect, I can substitute an empty string and get the same result, the thing that makes the difference is the lowercase `logon`. If anyone can set up a working example that gives the error `incorrect username or password` I will be forever grateful... but any pointers will be much appreciated. As far as I understand the wsdl gives all the information needed to do this, I'm just too much of a `[your_pick]` to get it...?

Original source