php调用webservice soap 高手请进

我要实现充值，接口http://service.48pt.com/Consumption/lasCharge.asmx
webservice
我要用PHP实现，
提交参数列表，在以下代码中，请高手帮忙

PHP code:
<?php
/*
* $Id: client1.php,v 1.3 2007/11/06 14:48:24 snichol Exp $
*
* Client sample that should get a fault response.
*
* Service: SOAP endpoint
* Payload: rpc/encoded
* Transport: http
* Authentication: none
*/
require_once('../lib/nusoap.php');
$client = new nusoap_client("http://service.48pt.com/Consumption/lasCharge.asmx");
$client->soap_defencoding = "UTF-8";

$err = $client->getError();
if ($err) {
echo '<h2>Constructor error</h2><pre>' . $err . '</pre>';
echo '<h2>Debug</h2><pre>' . htmlspecialchars($client->getDebug(), ENT_QUOTES) . '</pre>';
exit();
}
$client->setUseCurl($useCURL);
// This is an archaic parameter list
$params = array(
'PtAcc' => "sungfeng21",
'source' => 12,
'moneyType' => '1',
'merchantId' => '105',
'serverId' => '1201',
'serviceId' => '102',
'orderId' => '12345678912345678912345',
'curr' => 1,
'moneyAmount' => '1',
'amount' => '100',
'moneyList' => '100',
'pname'