SoapClient

$client = new SoapClient (NULL, array(
  'location' => 'http://soap.server.ua',
  'uri' => 'http://soap.server.ua/API',
  'soap_version' => SOAP_1_2));
$return = $client->__soapCall("GetToken",
  array(
    new SoapParam(new SoapVar('login', XSD_STRING), 'LOGIN'),
    new SoapParam(new SoapVar('password', XSD_STRING), 'PASSWORD')
  ),
   array('soapaction' => 'http://soap.server.ua/API#GetToken')
);