微信小程序支付PHP代码

<?php header('Content-type: application/json; charset=UTF-8'); $APPID="";//填写小程序appid $SECRET="";//填写小程序secret $JSCODE=""; if(isset($_GET['js_code'])){  $JSCODE=$_GET['js_code'];  $url="https://api.weixin.qq.com/sns/jscode2session?appid=".$APPID  ."&secret=".$SECRET."&js_code=".$JSCODE."&grant_type=authorization_code";  $curl = curl_init();  curl_setopt($curl, CURLOPT_URL, $url);  curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);  curl_setopt($curl, CURLOPT_HEADER, 0);  $data = curl_exec($curl);  $array=json_decode($data,true);  curl_close($curl);  $openid=isset($array['openid'])?$array['openid']:$array['errcode'];  if($openid=="40029"){   $response["result"] = 0;   $response["msg"] = "invalid code";   $response["openid"] = $openid;   echo json_encode($response);  }else{   $response["result"] = 1;   $response["msg"] = "user exist";   $response["openid"] = $openid;   echo json_encode($response);  } }

getUserInfo:function(cb){ var that = this if(this.globalData.userInfo){  typeof cb == "function" && cb(this.globalData.userInfo) }else{  wx.login({  success: function (res) {   if (res.code) {   var code = res.code;   wx.getUserInfo({    success: function (res2) {    console.log(res2);    that.globalData.userInfo = res2.userInfo;    typeof cb == "function" && cb(that.globalData.userInfo)    var encryptedData = encodeURIComponent(res2.encryptedData);//一定要把加密串转成URI编码    var iv = res2.iv;    //请求自己的服务器    //Login(code, encryptedData, iv);    wx.showToast({     title: '正在登录...',     icon: 'loading',     duration: 10000    });    //请求服务器    wx.request({     url: API_URL,//Getopenid.php     data: {     js_code: code,     },     method: 'GET',     header: {     'content-type': 'application/json'     }, // 设置请求的 header     success: function (res) {     // success     wx.hideToast();     console.log("JSON:" + res.data);     if (res.data.result=="1"){//获取openid成功      wx.setStorage({//存储openid      key: "openid",      data: res.data.openid      })     }else{      wx.showToast({      title: 'openid获取失败',      icon: 'none',      duration: 2000      })     }     console.log('服务器返回' + res.data.result);     console.log('服务器返回' + res.data.msg);     console.log('服务器返回' + res.data.openid);     },     fail: function () {     // fail     // wx.hideToast();     },     complete: function () {     // complete     }    })    }   })   } else {   console.log('获取用户登录态失败！' + res.errMsg)   }  }  }) } }

var app = getApp()onLoad: function () { console.log('onLoad') var that = this //调用应用实例的方法获取全局数据 app.getUserInfo(function(userInfo){//获取用户信息   //更新数据  that.setData({  userInfo:userInfo  }) })}

pay() { var that = this; if (this.data.totalPrice == 0) {  return; } wx.getStorage({//获取存储在本地的openid  key: 'openid',  success: function (res) {  console.log(res.data)  that.setData({   openid:res.data,  })  var carArray = that.data.carArray;  var str="";  for (var i = 0; i < carArray.length; i++) {   str=str+ carArray[i].num+"个" + carArray[i].name+" ";  }  wx.request({   url: 'Pay.php',//支付接口   data: {   openid: res.data,//openid   total_fee: that.data.totalPrice,//总金额   body: str,//商品描述   },   method:'GET',   success:function(res){   console.log(res.data['timeStamp'])   if(res.data){    wx.requestPayment({    'timeStamp': res.data['timeStamp'],    'nonceStr': res.data['nonceStr'],    'package': res.data['package'],    'signType': 'MD5',    'paySign': res.data['paySign'],    'success': function (res) {     wx.showToast({     title: '支付成功',     icon: 'succes',     duration: 1000,     mask: true     })     //支付成功后在数据库减去购买商品的数量     var carArray = that.data.carArray;     for (var i = 0; i < carArray.length; i++) {     that.setData({      jiesuan_num: carArray[i].num,      jiesuan_id: carArray[i].goods_id,     })     DeGood(that);     }    },    'fail': function (res) {     wx.showToast({     title: '支付失败',     icon: 'none',     duration: 1000,     mask: true     })    }    })   }   }  })  } }) },

<?php include 'WeixinPay.php';  $appid=''; //小程序appid $openid= $_GET['openid'];  $mch_id=''; //商户id $key=''; //商户key $out_trade_no = $mch_id. time();  $total_fee = $_GET['total_fee'];  $body= $_GET['body']; if(empty($total_fee)){   $body = $body;   $total_fee = floatval(99*100);  }else{   $body = $body;   $total_fee = floatval($total_fee*100);  }  $weixinpay = new WeixinPay($appid,$openid,$mch_id,$key,$out_trade_no,$body,$total_fee);  $return=$weixinpay->pay();  echo json_encode($return); 

<?php/* * 小程序微信支付 */class WeixinPay { protected $appid; protected $mch_id; protected $key; protected $openid; protected $out_trade_no; protected $body; protected $total_fee;   function __construct($appid, $openid, $mch_id, $key,$out_trade_no,$body,$total_fee) {  $this->appid = $appid;  $this->openid = $openid;  $this->mch_id = $mch_id;  $this->key = $key;  $this->out_trade_no = $out_trade_no;  $this->body = $body;  $this->total_fee = $total_fee; } public function pay() {  //统一下单接口  $return = $this->weixinapp();  return $return; } //统一下单接口 private function unifiedorder() {  $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';  $parameters = array(   'appid' => $this->appid, //小程序ID   'mch_id' => $this->mch_id, //商户号   'nonce_str' => $this->createNoncestr(), //随机字符串//   'body' => 'test', //商品描述   'body' => $this->body,//   'out_trade_no' => '2015450806125348', //商户订单号   'out_trade_no'=> $this->out_trade_no,//   'total_fee' => floatval(0.01 * 100), //总金额 单位 分   'total_fee' => $this->total_fee,//   'spbill_create_ip' => $_SERVER['REMOTE_ADDR'], //终端IP   'spbill_create_ip' => '192.168.0.161', //终端IP   'notify_url' => 'http://www.weixin.qq.com/wxpay/pay.php', //通知地址 确保外网能正常访问   'openid' => $this->openid, //用户id   'trade_type' => 'JSAPI'//交易类型  );  //统一下单签名  $parameters['sign'] = $this->getSign($parameters);  $xmlData = $this->arrayToXml($parameters);  $return = $this->xmlToArray($this->postXmlCurl($xmlData, $url, 60));  return $return; } private static function postXmlCurl($xml, $url, $second = 30)  {  $ch = curl_init();  //设置超时  curl_setopt($ch, CURLOPT_TIMEOUT, $second);  curl_setopt($ch, CURLOPT_URL, $url);  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //严格校验  //设置header  curl_setopt($ch, CURLOPT_HEADER, FALSE);  //要求结果为字符串且输出到屏幕上  curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);  //post提交方式  curl_setopt($ch, CURLOPT_POST, TRUE);  curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);  curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);  curl_setopt($ch, CURLOPT_TIMEOUT, 40);  set_time_limit(0);  //运行curl  $data = curl_exec($ch);  //返回结果  if ($data) {   curl_close($ch);   return $data;  } else {   $error = curl_errno($ch);   curl_close($ch);   throw new WxPayException("curl出错，错误码:$error");  } } //数组转换成xml private function arrayToXml($arr) {  $xml = "<root>";  foreach ($arr as $key => $val) {   if (is_array($val)) {    $xml .= "<" . $key . ">" . arrayToXml($val) . "</" . $key . ">";   } else {    $xml .= "<" . $key . ">" . $val . "</" . $key . ">";   }  }  $xml .= "</root>";  return $xml; } //xml转换成数组 private function xmlToArray($xml) {  //禁止引用外部xml实体   libxml_disable_entity_loader(true);  $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);  $val = json_decode(json_encode($xmlstring), true);  return $val; } //微信小程序接口 private function weixinapp() {  //统一下单接口  $unifiedorder = $this->unifiedorder();//  print_r($unifiedorder);  $parameters = array(   'appId' => $this->appid, //小程序ID   'timeStamp' => '' . time() . '', //时间戳   'nonceStr' => $this->createNoncestr(), //随机串   'package' => 'prepay_id=' . $unifiedorder['prepay_id'], //数据包   'signType' => 'MD5'//签名方式  );  //签名  $parameters['paySign'] = $this->getSign($parameters);  return $parameters; } //作用：产生随机字符串，不长于32位 private function createNoncestr($length = 32) {  $chars = "abcdefghijklmnopqrstuvwxyz0123456789";  $str = "";  for ($i = 0; $i < $length; $i++) {   $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);  }  return $str; } //作用：生成签名 private function getSign($Obj) {  foreach ($Obj as $k => $v) {   $Parameters[$k] = $v;  }  //签名步骤一：按字典序排序参数  ksort($Parameters);  $String = $this->formatBizQueryParaMap($Parameters, false);  //签名步骤二：在string后加入KEY  $String = $String . "&key=" . $this->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 $result_; } ///作用：格式化参数，签名过程需要使用 private function formatBizQueryParaMap($paraMap, $urlencode) {  $buff = "";  ksort($paraMap);  foreach ($paraMap as $k => $v) {   if ($urlencode) {    $v = urlencode($v);   }   $buff .= $k . "=" . $v . "&";  }  $reqPar;  if (strlen($buff) > 0) {   $reqPar = substr($buff, 0, strlen($buff) - 1);  }  return $reqPar; }}