php實(shí)現(xiàn)微信小程序授權(quán)登錄功能(實(shí)現(xiàn)流程)

view wx:if="{{isHide}}">
  view wx:if="{{canIUse}}" >
    view class='header'>
      image src='/images/icon/wx_login.png'>/image>
    /view>
 
    view class='content'>
      view>申請(qǐng)獲取以下權(quán)限/view>
      text>獲得你的公開信息(昵稱，頭像等)/text>
    /view>
 
    button class='bottom' type='primary' open-type="getUserInfo" lang="zh_CN" bindgetuserinfo="bindGetUserInfo">
      授權(quán)登錄
    /button>
  /view>
  view wx:else>請(qǐng)升級(jí)微信版本/view>
/view>
 
view wx:else>
  view>我的首頁(yè)內(nèi)容/view>
/view>

.header {
  margin: 90rpx 0 90rpx 50rpx;
  border-bottom: 1px solid #ccc;
  text-align: center;
  width: 650rpx;
  height: 300rpx;
  line-height: 450rpx;
}
.header image {
  width: 200rpx;
  height: 200rpx;
}
.content {
  margin-left: 50rpx;
  margin-bottom: 90rpx;
}
.content text {
  display: block;
  color: #9d9d9d;
  margin-top: 40rpx;
}
.bottom {
  border-radius: 80rpx;
  margin: 70rpx 50rpx;
  font-size: 35rpx;
}

// pages/test1/test1.js
var app = getApp();
Page({
 /**
  * 頁(yè)面的初始數(shù)據(jù)
  */
 data: {
  //判斷小程序的API，回調(diào)，參數(shù)，組件等是否在當(dāng)前版本可用。
  canIUse: wx.canIUse('button.open-type.getUserInfo'),
  isHide: false
 },
 /**
  * 生命周期函數(shù)--監(jiān)聽頁(yè)面加載
  */
 onLoad: function (options) {
  var that = this;
  // 查看是否授權(quán)
  wx.getSetting({
   success: function (res) {
    if (!res.authSetting['scope.userInfo']) {
     // 還未授權(quán)，顯示授權(quán)按鈕
     that.setData({
      isHide: true
     });
    } else {
     // 已授權(quán)，隱藏授權(quán)按鈕，顯示正文
     that.setData({
      isHide: false
     });
    }
   }
  })
 },
 //授權(quán)登陸按鈕
 bindGetUserInfo: function (e) {
  var that = this;
  console.log(e)
  if (e.detail.userInfo) {
   //用戶授權(quán)登陸，并跳轉(zhuǎn)首頁(yè)
   // that.getOpenid()
   wx.login({
    success: function (res) {
     // 請(qǐng)求自己后臺(tái)獲取用戶openid
     wx.request({
      url: app.domain + 'teacherapi/Wx_Decode/WxDecode',
      method: 'POST',
      header: { 'content-type': 'application/x-www-form-urlencoded' },
      data: {
       encryptedData: e.detail.encryptedData,
       signature: e.detail.signature,
       rawData: e.detail.rawData,
       iv: e.detail.iv,
       code: res.code
      },
      success: function (res_user) {
       if (res_user.data.status == 0) {
        var data = JSON.parse(res_user.data.msg)　　　　//json轉(zhuǎn)對(duì)象
        //授權(quán)成功返回的數(shù)據(jù)，根據(jù)自己需求操作
        console.log(data)
        //授權(quán)成功后，隱藏授權(quán)按鈕，顯示正文
        that.setData({
         isHide: false
        });
       }
      }, fail: function () {
       that.showModal('獲取授權(quán)信息失敗')
      }
     })
    }
   })
  } else {
   //用戶按了拒絕授權(quán)按鈕，提示引導(dǎo)授權(quán)
   that.showModal('請(qǐng)授權(quán)后使用小程序')
  }
 },
 //未授權(quán)彈窗
 showModal: function (e) {
  wx.showModal({
   title: '提示',
   content: e,
   showCancel: false,
   confirmText: '返回授權(quán)',
   success: function (res) {
    if (res.confirm) {
     console.log('用戶點(diǎn)擊了“返回授權(quán)”')
    }
   }
  })
 },
})

?php
namespace app\teacherapi\controller;
use think\Controller;
/**
* @date: 2018-12
* 微信操作類
*/
class WxDecode extends Controller
{
  public function httpGet($url) {
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($curl, CURLOPT_URL, $url);
    $res = curl_exec($curl);
    curl_close($curl);
    return $res;
  }
  /**
   * @author: zxf
   * @date: 2018-12-08
   * @description: 解密微信用戶敏感數(shù)據(jù)
   * @return array
   */
  public function WxDecode()
  {
    // 接收參數(shù)
    $data = request() -> param();
    // 引入解密文件 在微信小程序開發(fā)文檔下載
    vendor('wx.WXBizDataCrypt');
    vendor('wx.ErrorCode');
    $appid = config('TESTPPID');
    $appsecret = config('TESTSECREET');
    $grant_type = "authorization_code"; //授權(quán)（必填）
    $code = $data['code'];    //有效期5分鐘 登錄會(huì)話
    $encryptedData=$data['encryptedData'];
    $iv = $data['iv'];
    $signature = $data['signature'];
    $rawData = $data['rawData'];
    // 拼接url
    $url = "https://api.weixin.qq.com/sns/jscode2session?"."appid=".$appid."secret=".$appsecret."js_code=".$code."grant_type=".$grant_type;
    $res = json_decode($this->httpGet($url),true);
    $sessionKey = $res['session_key']; //取出json里對(duì)應(yīng)的值
    $signature2 = sha1(htmlspecialchars_decode($rawData).$sessionKey);
    // 驗(yàn)證簽名
    if ($signature2 !== $signature){
      return json("驗(yàn)簽失敗");
    } 
    // 獲取解密后的數(shù)據(jù)
    $pc = new \WXBizDataCrypt($appid, $sessionKey);
    $errCode = $pc->decryptData($encryptedData, $iv, $data );
    if ($errCode == 0) {
      return return_succ($data);
    } else {
      return return_error($errCode);
    }
  }
}