ini_set("soap.wsdl_cache_enabled", "0");

$client = new SoapClient("http://server/basepubname/ws/servicename?wsdl",
array(
'login' => 'user', //логин, аутентификацию выполнять не будем
'password' => 'password', //пароль
'trace' => true,
'features' => SOAP_USE_XSI_ARRAY_TYPE,
//'compression' => SOAP_COMPRESSION_ACCEPT | SOAP_COMPRESSION_GZIP | 5
)

);

$params["param1"] = "param";
$params["param2"] = 123;

$result = $client->method($params);