PHP：微信小程序 微信支付服务端集成实例详解及源码下载

APPID = 'wx426b3015555a46be';MCHID = '1900009851';KEY = '8934e7d15453e97507ef794cf7b0519d';APPSECRET = '7813490da6f1265e4901ffb80afaa36f';

<?phprequire_once __DIR__ . '/BaseController.php';require_once __DIR__ . '/../third_party/wxpay/WxPay.Api.php';class WXPay extends BaseController {  function index() {  }}

function index() {//     初始化值对象    $input = new WxPayUnifiedOrder();//     文档提及的参数规范：商家名称-销售商品类目    $input->SetBody("灵动商城-手机");//     订单号应该是由小程序端传给服务端的，在用户下单时即生成，demo中取值是一个生成的时间戳    $input->SetOut_trade_no('123123123');//     费用应该是由小程序端传给服务端的，在用户下单时告知服务端应付金额，demo中取值是1，即1分钱    $input->SetTotal_fee("1");    $input->SetNotify_url("http://paysdk.weixin.qq.com/example/notify.php");    $input->SetTrade_type("JSAPI");//     由小程序端传给服务端    $input->SetOpenid($this->input->post('openId'));//     向微信统一下单，并返回order，它是一个array数组    $order = WxPayApi::unifiedOrder($input);//     json化返回给小程序端    header("Content-Type: application/json");    echo json_encode($order);  }

$inputObj->SetNonce_str(self::getNonceStr());//随机字符串

 /**   * 生成签名   * @return 签名，本函数不覆盖sign成员变量，如要设置签名需要调用SetSign方法赋值   */  public function MakeSign()  {    //签名步骤一：按字典序排序参数    ksort($this->values);    $string = $this->ToUrlParams();    //签名步骤二：在string后加入KEY    $string = $string . "&key=".WxPayConfig::KEY;    //签名步骤三：MD5加密    $string = md5($string);    //签名步骤四：所有字符转为大写    $result = strtoupper($string);    return $result;  }

wx.login({     success: function(res) {      if (res.code) {       //发起网络请求       wx.request({        url: 'https://api.weixin.qq.com/sns/jscode2session?appid=wx9114b997bd86f***&secret=d27551c7803cf16015e536b192******&js_code='+res.code+'&grant_type=authorization_code',        data: {         code: res.code        },        success: function (response) {          console.log(response);        }       })      } else {       console.log('获取用户登录态失败！' + res.errMsg)      }     }    });

    //统一下单接口对接          wx.request({            url: 'https://lendoo.leanapp.cn/index.php/WXPay',            data: {              openId: openId            },            success: function (response) {              console.log(response);            },                header: {            'content-type': 'application/x-www-form-urlencoded'        },          });

{ "appid": "wx9114b997bd86f8ed", "mch_id": "1414142302", "nonce_str": "eEICgYFuGqxFRK6f", "prepay_id": "wx201701022235141fc713b8f80137935406", "result_code": "SUCCESS", "return_code": "SUCCESS", "return_msg": "OK", "sign": "63E60C8CD90394FB50E612D085F5362C", "trade_type": "JSAPI"}

// 发起支付var appId = response.data.appid;var timeStamp = (Date.parse(new Date()) / 1000).toString();var pkg = 'prepay_id=' + response.data.prepay_id;var nonceStr = response.data.nonce_str;var paySign = md5.hex_md5('appId='+appId+'&nonceStr='+nonceStr+'&package='+pkg+'&signType=MD5&timeStamp='+timeStamp+"&key=d27551c7803cf16***e536b192d5d03b").toUpperCase();console.log(paySign);console.log(appId);wx.requestPayment({  'timeStamp': timeStamp,  'nonceStr': nonceStr,  'package': pkg,  'signType': 'MD5',  'paySign': paySign,  'success':function(res){    console.log('success');    console.log(res);  }});

errMsg:"requestPayment:fail"err_code:2err_desc:"支付验证签名失败"