业务场景：需要再手机端H5使用支付宝的支付！

第一步：

开通支付宝商户,支付宝开放平台地址放在这里了。

第二步：

创建应用+开通支付产品功能：

创建应用就不单一切图了！登录账户-管理中心就能看到-选择网页应用

然后登录 - 支付宝进入这个地址，去开通支付宝支付产品ok!

下面：

第三步：

下载支付宝提供的支付sdk，我使用的是这个支付宝提供的php-sdk，小程序文档 - 支付宝文档中心

下载好以后，预埋到我的代码里

//引用require_once root_path().'extend/aop/AopClient.php';
require_once root_path().'extend/aop/request/AlipayTradeAppPayRequest.php';//下面是一个简单的方法public function index(){$date      =request()->param();$order_sn  ='ac'.rand(10000,99999).time();$total_fee = intval($date['money']);header("Content-type:text/html;charset=utf-8");$API = array (	//应用ID,您的APPID。'app_id' => "您的APPID",//商户私钥，您的原始格式RSA私钥'merchant_private_key' => "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",//编码格式'charset' => "UTF-8",//签名方式'sign_type'=>"RSA2",'method' =>'alipay.trade.wap.pay',//支付宝网关'gatewayUrl' => "https://openapi.alipay.com/gateway.do", //如果使用沙箱就用下面这个地址测试//'gatewayUrl' => "https://openapi-sandbox.dl.alipaydev.com/gateway.do", //支付宝公钥,查看地址：https://openhome.alipay.com/platform/keyManage.htm 对应APPID下的支付宝公钥。'alipay_public_key' => "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp2XVGnquupTQIAmlRR0BJZD5AuutyuABkajMv/si2JTZjg+YrmGoVeAc+ypOBfaEJ9qHdBLT+Qrl2sT6HOF43NgO2BmHn4iZtqyDOOhhfLq2wzrhyIhzsakZuHPzVIGknX6BkEl+2SgCL7lmk30fitqPA2a/fY58MhmArz3F6w5iUpdYnsUn/NiVePlGcySv06yz7wkIZutwSYuXxeU655mwxj0q89pv6yMZm5PR95RMrKGyIOOuwLiwGrqSsEFM1yNSsxJHdqnDEJKKP01FitGdETyJam667GueIyFT/O9RAN7ZZh7+0m2ixOX4ZIkznCVnrWSyZQxF5lSu9IaBiQIDAQAB",//日志路径'log_path' => "",);     //构造业务请求参数的集合(订单信息)$content = array();$content['subject']      = '支付宝支付';                 // 商品标题$content['body']         = 'APP支付';  // 商品描述 非必须$content['out_trade_no'] = $order_sn;         // 订单号$content['total_amount'] = $total_fee;       // 要求必须为浮点型，订单金额$content['product_code'] = "QUICK_MSECURITY_PAY";            //销售产品码,固定值$con = json_encode($content);                                 //$content是biz_content的值,将之转化成json字符串$this->orderAdd($order_sn,$date['money']);//公共参数$Client               = new \AopClient();                 //实例化支付宝sdk里面的AopClient类,下单时需要的操作,都在这个类里面$param                = array();$param['app_id']      = $API['app_id'];         //支付宝分配给开发者的应用ID$param['method']      = $API['method'];         //接口名称$param['charset']     = $API['charset'];       //请求使用的编码格式$param['sign_type']   = $API['sign_type'];   //商户生成签名字符串所使用的签名算法类型$param['timestamp']   = date("Y-m-d H:i:s");   //发送请求的时间$param['version']     = '1.0';       //调用的接口版本，固定为：1.0$param['notify_url']  = request()->domain() . '/index.pay/alipayNotify'; //支付宝服务器主动通知地址$param['return_url']  = request()->domain() . '/back?sn='.$order_sn; //支付宝服务器主动通知地址$param['biz_content'] = $con;              //业务请求参数的集合,长度不限,json格式$paramStr             = $Client->getSignContent($param);//组装请求签名参数  到此步目前没有问题$sign                 = $Client->alonersaSign($paramStr, $API['merchant_private_key'], 'RSA2'); //生成签名$param['sign']        = $sign;$str                  = $Client->getSignContentUrlencode($param);       //最终请求参数$url                  = $API['gatewayUrl'].'?'.$str;header("Location:".$url); }

下面提起支付后，就会来一个回调：

  //这里比较简单，根据自己业务需求去处理public function  alipayNotify(){$date  = request()->param();if(!empty($date['out_trade_no'])){log::write($date['out_trade_no']);$where['order_sn']  =$date['out_trade_no'];$where['order_pay'] =0;$result             = OrderModel::where($where)->find();if($result){$result->order_pay=1; $result->save();}}}