PHP小程序支付功能完整版【基于thinkPHP】

var url = getApp().globalData.httpServer + 'api/buy/pay';var userId = getApp().globalData.userId;var totalMoney = this.data.totalMoney;var cart = this.data.goods;var param = {  cart: JSON.stringify(cart),  cartamount: totalMoney,  userid: userId,  payment: this.data.payment,  addressid: defaultAddress.id};var that = this;util.http(url, param, function (ret) {  if (ret.data.code == 1) {    if (that.data.payment == 'balance') { // 余额支付      that.afterPaySuccess(ret.data.data);    } else {                // 微信支付      wx.requestPayment({        timeStamp: ret.data.data.timeStamp,        nonceStr: ret.data.data.nonceStr,        package: ret.data.data.package,        signType: ret.data.data.signType,        paySign: ret.data.data.paySign,        'success': function (res) {          that.afterPaySuccess(ret.data.data.orderid);        },        'fail': function (res) {          console.log(res);        }      })    }  } else {    util.showTip(ret.data.msg, '提交订单失败');  }});/** * 网络请求 */function http(url, params, callback) {  wx.request({    url: url,    data: params,    success: function (res) {      callback(res);    },    fail: function (err) {      console.log(err);    }  });}

public function pay(){    $cart = I('cart', '', 'trim');    $cartAmount = I('cartamount');    $addressId = I('addressid', 0, 'intval');    $payment = I('payment', '', 'trim');    $userId = $this->userid;    $cart = json_decode($cart, true);    if (empty($cart)) {      $result['msg'] = '购物车获取失败';      $result['code'] = 0;      $this->ajaxReturn($result);    }    $totalMoney = 0;    foreach ($cart as $goods) {      $money = $goods['price'];  // price      $selectCount = $goods['selectcount'];  // price      $itemAmount = number_format($money * $selectCount, 2, '.', '');      $totalMoney += $itemAmount;    }    // 检查总金额是否一致    if ($totalMoney != $cartAmount) {      $result['msg'] = '总金额不匹配:' . $totalMoney;      $result['code'] = 0;      $this->ajaxReturn($result);    }    // 获取用户地址    $address = M('MemberAddress')->where('userid=' . $userId . " and id=" . $addressId)->find();    if (empty($address)) {      $result['msg'] = '用户地址不存在';      $result['code'] = 0;      $this->ajaxReturn($result);    }    // 用户信息    $user = M('Member')->where("id=" . $userId)->find();    if ($payment == 'balance') {      if ($user['amount'] < $cartAmount) {        $result['msg'] = '余额不足';        $result['code'] = 0;        $this->ajaxReturn($result);      }    }    // 生成订单    $order['ordersn'] = $this->genOrdersn($user['id']);    $order['price'] = $cartAmount;    $order['addressid'] = $address['id'];    $order['addressinfo'] = serialize($address); //json_encode($address);    $order['longitude'] = $address['longitude'];    $order['latitude'] = $address['latitude'];    $order['addtime'] = time();    $order['status'] = 0;    $order['userid'] = $user['id'];    $order['paytype'] = $payment;    $order['paysn'] = '';    $order['paytime'] = time();    $orderId = M("Order")->add($order);    if ($orderId == 0) {      $result['msg'] = '创建订单失败';      $result['code'] = 0;      $this->ajaxReturn($result);    }    foreach ($cart as $goods) {      $orderGoods['orderid'] = $orderId;      $orderGoods['goodsid'] = $goods['id'];      $orderGoods['title'] = $goods['title'];      $orderGoods['price'] = $goods['price'];      $orderGoods['attr'] = $goods['attr'];      $orderGoods['pic'] = $goods['pic'];      $orderGoods['num'] = $goods['selectcount'];      M("OrderGoods")->add($orderGoods);    }    if ($payment == 'balance') {      // 余额支付      $this->balancePay($cartAmount, $user['wxopenid'], $orderId);    } else if ($payment == 'weixin') {      // 微信支付      $this->weixinPay($cartAmount, $user['wxopenid'], $orderId, $order['ordersn']);    }}/*** 微信支付* @author 大脸猫脸大* @param $cart* @param $cartAmount* @param $address* @param $user*/private function weixinPay($cartAmount, $openId, $orderId, $orderSn){    import("Vendor.Wxpay.lib.WxPay#Api", "", ".php");    //订单号    $money = $cartAmount * 100;    $openid = $openId;    $input = new /WxPayUnifiedOrder();    $input->SetBody("迪克-商品");    $input->SetOut_trade_no("$orderSn");    $input->SetTotal_fee("$money");    $input->SetNotify_url("https://" . $_SERVER['HTTP_HOST'] . "/api/buy/payNotify");    $input->SetTrade_type("JSAPI");    $input->SetOpenid($openid);    $unifiedOrder = /WxPayApi::unifiedOrder($input);    if ($unifiedOrder['result_code'] == 'SUCCESS' && $unifiedOrder['return_code'] == 'SUCCESS') {      $time = time();      $data['timeStamp'] = "$time";              //时间戳      $data['nonceStr'] = $unifiedOrder['nonce_str'];     //随机字符串      $data['signType'] = 'MD5';                //签名算法，暂支持 MD5      $data['package'] = 'prepay_id=' . $unifiedOrder['prepay_id'];  //统一下单接口返回的 prepay_id 参数值，提交格式如：prepay_id=*      $data['paySign'] = $this->genPaySign($unifiedOrder, $time);// 之前以为是$unifiedOrder['sign']; 后来发现是调用的这种方法. 签名方案参见微信公众号支付帮助文档;      $data['out_trade_no'] = $orderSn;      $data['orderid'] = $orderId;      $return['code'] = 1;      $return['data'] = $data;    } else {        Log::write(var_export($unifiedOrder, true), Log::ERR, '', C('LOG_PATH')."wx_pay_".date('y_m_d').'.log');        $return['code'] = 0;        $return['msg'] = '微信支付失败';// $unifiedOrder['RETURN_MSG'];    }    $this->ajaxReturn($return);}/* 生成支付签名*/private function genPaySign($unifiedOrder, $time){    $appId = /WxPayConfig::APPID;    $nonceStr = $unifiedOrder['nonce_str'];    $package = 'prepay_id=' . $unifiedOrder['prepay_id'];    $signType = "MD5";    $timeStamp = $time;    $key = /WxPayConfig::KEY;    $sign = md5(sprintf("appId=%s&nonceStr=%s&package=%s&signType=%s&timeStamp=%s&key=%s", $appId, $nonceStr, $package, $signType, $timeStamp, $key));    return $sign;}/*** 支付回调* @author:大脸猫脸大*/public function payNotify(){    import("Vendor.Wxpay.lib.WxPay#Data", "", ".php");    $xml = $GLOBALS['HTTP_RAW_POST_DATA'];    $val = /WxPayResults::Init($xml);    if ($val['result_code'] == 'SUCCESS' && $val['return_code'] == 'SUCCESS') {      $orderSn = $val['out_trade_no'];      $transactionId = $val['transaction_id'];      $data = array('paytype' => 'weixin', 'status' => '1', 'paytime' => time(), 'paysn' => $transactionId);      M("Order")->where("ordersn='$orderSn'")->setField($data);      exit('<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>');    }else {      Log::write(var_export($val, true), Log::ERR, '', C('LOG_PATH')."wx_pay_notify_".date('y_m_d').'.log');      exit('<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>');    }}