'Alipay' => [

            //线上app_id    

            'app_id' => "2016092300576028",

            //线上应用私钥

            'merchant_private_key' => "en4wG3L",

            //线上异步通知地址

            'notify_url' => "https://www.ios.events.com/index.php/Order/notify",

            //线上同步通知地址

            'return_url' => "https://www.ios.events.com/index.php/Order/return_url",

            //编码格式

            'charset' => "UTF-8",

            //签名方式

            'sign_type'=>"RSA2",

            //线上支付宝网关

            'gatewayUrl' => "https://openapi.alipay.com/gateway.do",

            //沙箱支付宝网关

            //'gatewayUrl' => "https://openapi.alipaydev.com/gateway.do",

            //线上支付宝公钥

            'alipay_public_key' => "",

            //应用公钥

            'wap_public_key'  => "",

        ]

1. 调用支付宝支付单接口

$config = C("Alipay");//支付宝接口配置数据

        if (!empty($_POST['WIDout_trade_no']) && trim($_POST['WIDout_trade_no']) != "") {

            //商户订单号，商户网站订单系统中唯一订单号，必填

            $out_trade_no = $_POST['WIDout_trade_no'];

            //订单名称，必填

            $subject = $_POST['WIDsubject'];

            //付款金额，必填

            $total_amount = $_POST['WIDtotal_amount'];

            //商品描述，可空

            $body = $_POST['WIDbody'];

            //超时时间

            $timeout_express = "9m";

            $payRequestBuilder = new AlipayWapPay();

            $payRequestBuilder->setBody($body);

            $payRequestBuilder->setSubject($subject);

            $payRequestBuilder->setOutTradeNo($out_trade_no);

            $payRequestBuilder->setTotalAmount($total_amount);

            $payRequestBuilder->setTimeExpress($timeout_express);

            $payResponse = new AlipayService($config);

            $result=$payResponse->wapPay($payRequestBuilder,$config['return_url'],$config['notify_url']);

        }

 $time = time();
        $orderModel = M('order');
        $config = C("Alipay");//支付宝接口配置数据
        $arr=$_POST;
        /* 实际验证过程建议商户添加以下校验。
        1、商户需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
        2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
        3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
        4、验证app_id是否为该商户本身。
        */
        //验签过程
        $alipaySevice = new AlipayService($config);
        $alipaySevice->writeLog(var_export($_POST,true));
        $result = $alipaySevice->check($arr);
        if($result) {//验证成功
            //进行校验
            if($arr){
                $ordersn = $_POST['out_trade_no'];//订单号
                $total_amount = $_POST['total_amount'];//订单总金额
                $app_id = $_POST['app_id'];//应用id
                $data = M('weiz_order')->where('ordersn='.$ordersn)->find();
                if(empty($data)||$total_amount!==$data['total']||$app_id!==$config['app_id']){
                    return false;
                } 

            }else{
                return false;
            }
            if($_POST['trade_status'] == 'TRADE_SUCCESS') {
                $orderModel->startTrans();//事务开始
                if(!empty($ordersn)){
                    $data['paytime'] = $time;//支付时间
                    $data['payment'] = 2;
                    $data['paystatus'] = 1;
                     $res=$orderModel->where('ordersn='.$ordersn)->save($data);
                    $orderData = M('order')->where('ordersn='.$ordersn)->find();
                    $orderId = $orderData['id'];