// ali支付参数
public function ali_app($ params ,$aliCfg){


require_once EXTEND_PATH.' alipay /AopSdk.php';

require_once EXTEND_PATH.'alipay/aop/AopClient.php';
require_once EXTEND_PATH.'alipay/aop/request/AlipayTradeAppPayRequest.php';

//读取配置信息
$aop = new \AopClient;
$aop->gatewayUrl = "#34;;
$aop->appId = $aliCfg['alipay_appid'] ;
$aop->rsaPrivateKey = $aliCfg['alipay_privateKey'];//私钥
$aop->format = "json";
$aop->charset = "UTF-8";
$aop->signType = "RSA2";
$aop->alipayrsaPublicKey = $aliCfg['alipay_publicKey'];//公钥

$request = new \AlipayTradeAppPayRequest();
//$bizcontent = "{\"body\":\"" . $this->uniacid . "\","
$bizcontent = "{\"body\":\"" . $params['goodsName'] . "\","//商品名称
. "\" subject \": \"" . $params['goodsName'] . "\","
. "\"out_trade_no\": \"" . $params['orderId'] . "\","//订单编号
. "\"timeout_express\": \"30m\","
. "\"total_amount\": \"" . $params['payPrice'] . "\","//付款金额
. "\"product_code\":\"QUICK_MSECURITY_PAY\""
. "}";
$request->setNotifyUrl($params['notify_url']);//异步回调地址
$request->setBizContent($bizcontent);

$response = $aop->sdkExecute($request);
$payInfo = $response; //就是orderString 可以直接给客户端请求，无需再做处理。
return array(
"payInfo" => $payInfo,
);


}