PHP 支付宝小程序 支付以及回调处理

一、去支付宝官网下载对应的PHP SDK

二、 在服务端调用 alipay.trade.create (统一收单交易创建接口)，获得支付宝交易号 tradeNO

接下来直接上代码：

首先加载支付宝的系统参数，以及基础的配置

public function ali_init($config) { 
   
        require  dirname(__FILE__) .'/../library/alipay/AopSdk.php';
        $aop = new \AopClient ();
        //支付宝网关
        $aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';

        //第三方配置信息
        $aop->appId              = $config['ali_app_id'];//第三方应用的appid
        $aop->rsaPrivateKey      = $config['ali_rsa_pri_key'];//第三方应用的密钥
        $aop->alipayrsaPublicKey = $config['ali_rsa_pub_key'];//第三方应用的公钥
        $aop->apiVersion         = '1.0';
        $aop->signType           = 'RSA2';
        $aop->postCharset        = 'UTF-8';
        $aop->format             = 'json';
        return $aop;
    }
    

第二步：调用 alipay.trade.create (统一收单交易创建接口)，获得支付宝交易号 tradeNO

public function Ali_Pay($data = [])
    { 
   
        $config = pdo_get('bda_cardcrm_company', ['id' => $data['company_id']]);
        //实例化客户端
        $aop                     = $this->ali_init($config);
        $aop->alipayrsaPublicKey = $config['ali_pay_rsa_pub_key'];

        //实例化具体API对应的request类,类名称和接口名称对应,当前调用接口名称：alipay.trade.create.
        $request = new AlipayTradeCreateRequest ();

        $request_data = [
            'out_trade_no' => $data['out_trade_no'],        // 商户订单号
            'total_amount' => $data['total_amount'],        // 订单总金额
            'subject'      => $data['subject'],             // 订单标题
            'buyer_id'     => $data['buyer_id'],            // 买家的支付宝唯一用户号（2088开头的16位纯数字）
        ];
        $http_type = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')) ? 'https://' : 'http://';
        $website = $http_type . $_SERVER['HTTP_HOST'];
        $request->setNotifyUrl($website .'/payment/alipay/notify.php');
        $request_data = json_encode($request_data);
        $request->setBizContent($request_data);
        $result = $aop->execute ( $request);

        $responseNode = str_replace(".", "_", $request->getApiMethodName()) . "_response";
        $resultCode   = $result->$responseNode->code;
        if(!empty($resultCode) && $resultCode == 10000){ 
   
            return ['error'=>0 , 'res'=>$result->$responseNode];
        } else { 
   
            return ['error'=>-1 , 'res'=>$result->$responseNode];
        }
    }

测试一下接口是否成功

到这一步，基本上服务端处理就差不多了；接下来，将后端生成的支付宝交易号 tradeNO返给前端；

在小程序端使用 tradeNO，调用 my.tradePay 接口唤起支付收银台。

my.tradePay({ 
   
		tradeNO: '2017111521001104105336677922',  
		success: function(res) { 
   
			my.alert(res.resultCode);
		},
		fail: function(res) { 
   
          my.alert(res.resultCode);
       },
	});

最后就是我们的回调处理了

我们可以将支付宝回调返回的数据写入文件中。

file_put_contents(‘alipay.txt’ , json_encode($_POST));

回调成功的话，会在文件中看到相应的json字符串，就像这样：

{ 
   "gmt_create":"2019-07-25 21:13:58","charset":"UTF-8","seller_email":"dust***************3@hotmail.com","subject":"AliPay","sign":"ii\/ltz08zbJSb81KjMP9WqFWaES6eCcjQNfc80Y8ny9r5bDmB1WkKC+\/U+t+7uaL7y0QMARQcR2l20cn9WpqRU+6JPVjqL****************0MYeGQomluXDMvElvW1YUTywt59C2S15bxiNcZmDksDv3RHGSfhLlf0+521ff2gryDNr0X6MA2IKQiipwFKaQvNQsxvtPQzDYiAeJRy6z4jp5Hs0w1dsZuFBQOl5aas7fz88e8dmUFnSWi1poUIBFKijfWmZ1zdMinLK8y6VTHEIhD1LxHt5L\/JaqekDlpbE9X3hhIDN+5mnuwvheZz52mcsKfizCyGBj+ql\/oow==","buyer_id":"***********","invoice_amount":"0.01","notify_id":"***********","fund_bill_list":"[{\"amount\":\"0.01\",\"fundChannel\":\"ALIPAYACCOUNT\"}]","notify_type":"trade_status_sync","trade_status":"TRADE_SUCCESS","receipt_amount":"0.01","buyer_pay_amount":"0.01","app_id":"*********","sign_type":"RSA2","seller_id":"*************","gmt_payment":"2019-07-25 21:14:15","notify_time":"2019-07-25 21:14:16","version":"1.0","out_trade_no":"b-245-201907255d39ab15d37ac","total_amount":"0.01","trade_no":"*********","auth_app_id":"***********","buyer_logon_id":"cha***@outlook.com","point_amount":"0.00"}

我们需要验签

//验证签名
$aop = new \AopClient();
$aop->alipayPublicKey = $ali_pay_rsa_pub_key;

$flag = $aop->rsaCheckV1($data , NULL, "RSA2");

if(!empty($data) && $flag) { 
   
    //以下为回调业务逻辑代码

	... ...数据处理



	
    if ($trade_status == 'TRADE_SUCCESS') { 
   
        //支付成功业务处理
		...	...
		//
        exit('success');
    }
}
exit('failed');

最后就是支付方法的调用

// 支付宝
        load()->classs("alipay");
        $data['total_amount'] = '商品金额';
        $data['subject']      = "AliPay";
        $data['out_trade_no'] = '订单号';
        $data['buyer_id']     = '用户openID';
        $alipay = new AliPay();
        $res    = $alipay->Ali_Pay($data);
        if ($res['error'] == 0) { 
   
            pdo_commit();// 全部执行成功提交
            return $this->result(0,'success',$res['res']);
        } else { 
   
            return $this->result(-1,'error',$res['res']);
        }
        

这样完整的支付宝小程序支付就完成了