PHP SOAP client not creating body - php

Question

After over a half a day of trying and reading tutorials on creating a simple SOAP client, I am no closer to retrieving a request from API I attempting to work with.
WSDL: http://publicapi.ekmpowershop31.com/v1.1/publicapi.asmx?WSDL
I can make the request from SOAP UI with the following simple SOAP request:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:pub="http://publicapi.ekmpowershop.com/">
<soapenv:Header/>
<soapenv:Body>
<pub:GetOrders>
<!--Optional:-->
<pub:GetOrdersRequest>
<!--Optional:-->
<pub:APIKey>myApiKey</pub:APIKey>
</pub:GetOrdersRequest>
</pub:GetOrders>
</soapenv:Body>
</soapenv:Envelope>
This above returns the expected data.
When it comes to translating the request into a PHP I have the following:
$wsdl = 'http://publicapi.ekmpowershop31.com/v1.1/publicapi.asmx?WSDL';
$trace = true;
$exceptions = false;
$debug = true;
$client = new SoapClient($wsdl,
array(
'trace' => $trace,
'exceptions' => $exceptions,
'debug' => $debug,
));
$param = array('GetOrdersRequest' => array(
'APIKey' => 'myApiKey'
)
);
$resp = $client->GetOrders();
print_r($param);
print_r($client->__getLastRequest());
print_r($client->__getLastResponse());
If put the $param into the GetOrders function then, it breaks and nothing happens.
Even if I use an array in the $client->GetOrders(array('someArry' => $param)) then response and request still always looks the same and looks like the body of the SOAP request is never created:
Request:
?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://publicapi.ekmpowershop.com/"><SOAP-ENV:Body><ns1:GetOrders/></SOAP-ENV:Body></SOAP-ENV:Envelope>
Response:
<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><GetOrdersResponse xmlns="http://publicapi.ekmpowershop.com/"><GetOrdersResult><Status>Failure</Status><Errors><string>Object reference not set to an instance of an object.</string></Errors><Date>2017-04-03T16:00:42.9457446+01:00</Date><TotalOrders>0</TotalOrders><TotalCost xsi:nil="true" /></GetOrdersResult></GetOrdersResponse></soap:Body></soap:Envelope>
If anyone can shed some light on what I am doing wrong here that would be real big help?
P.S My experience of SOAP in PHP is limited as I am used to SOAP in a java env. Thanks

Answer 1

You need to pass the parameters into the $client->GetOrders() call. Also the WSDL defines some required parameters, so a minimal example is something like:
$wsdl = 'http://publicapi.ekmpowershop31.com/v1.1/publicapi.asmx?WSDL';
$trace = true;
$exceptions = false;
$debug = true;
$client = new SoapClient($wsdl,
array(
'trace' => $trace,
'exceptions' => $exceptions,
'debug' => $debug,
));
$param = array(
'GetOrdersRequest' => array(
'APIKey' => 'dummy-key',
'CustomerID' => 1,
'ItemsPerPage' => 1,
'PageNumber' => 1,
)
);
$resp = $client->GetOrders($param);
print_r($param);
print_r($client->__getLastRequest());
print_r($client->__getLastResponse());
This gives the error response:
<Errors><string>Invalid character in a Base-64 string.</string></Errors>
which presumably is because my API key is invalid.