How to add attributes to elements when making request with SoapClient - php

Question

I need to make a SOAP call and a request shoul look like this:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:soap="xxxxxx">
<soapenv:Header/>
<soapenv:Body>
<soap:getOptions>
<arg0 username="?" password="?">
<getOptionsBusinessData/>
</arg0>
</soap:getOptions>
</soapenv:Body>
</soapenv:Envelope>
Is that possible with PHP SoapClient?
Tried many things all of which resulted in java nullpoint exception. Now I'm trying
$xml_string = '<getOptions>
<arg0 username="xxxx" password="xxxx">
<getOptionsBusinessData/>
</arg0>
</getOptions>';
$client = new \SoapClient('https://example.com?wsdl');
$args = array(new \SoapVar($xml_string, XSD_ANYXML));
$res = $client->__soapCall('getOptions', $args);
return $res;
Got different kind of error SoapFault Cannot find dispatch method for {}getOptions. I'm stuck! How do I unstuck?

Answer 1

Do not pass xml string as parameter. SoapClient is supposed to generate the XML for you. Try following call:
$client = new \SoapClient('https://example.com?wsdl');
$res = $client->getOptions(array('username' => 'xxx', 'password' => 'xxx'));
return $res;