How to obtain user information interface in Thinkphp5 WeChat applet

<?php

/**

 * Created by PhpStorm.

 * User: leeoo

 * Date: 2017/9/14 0014

 * Time: 10:43

 */

namespace app\api\controller\v1;

use think\Loader;

use think\Request;

use Workerman\Protocols\Http;

use Wxxcx\WXBizDataCrypt;

use first\second\Foo;

class Index

{

  public function index($id)

  {

    return json(['msg' => $id]);

  }

  public function dologin()

  {

    $code = Request::instance()->param('code');

    $encryptedData = Request::instance()->param('encryptedData');

    $iv = Request::instance()->param('iv');

    $appid = "你的小程序appid";

    $secret = "你的小程序secret";

    //appid={$appid}&secret={$secret}&js_code={$code}&grant_type=authorization_code

    $param = array(

      'appid' => $appid,

      'secret' => $secret,

      'js_code' => $code,

      'grant_type' => 'authorization_code'

    );

  //http函数为封装的请求函数

    $res = http("https://api.weixin.qq.com/sns/jscode2session", $param, 'post');

    $arr = json_decode($res, true);

    $result = $this->wxdecode($encryptedData, $iv, $arr['session_key'], $appid);

    //return json($result);

    if ($result) {

      return json(['code' => 1]);

    } else {

      return json(['code' => -1]);

    }

  }

  public function wxdecode($encryptedData, $iv, $sessionKey, $appid)

  {

    //Loader::import('Wxxcx\WXBizDataCrypt', EXTEND_PATH);

    $pc = new WXBizDataCrypt($appid, $sessionKey);

    $data = null;

    $errCode = $pc->decryptData($encryptedData, $iv, $data);

    //echo $data;

    //return json(['data'=>$data]);

    $data = json_decode($data);

    if ($errCode == 0) {

      //print($data . "\n");

      //dump($data);

      return $data;

    } else {

      //print($errCode . "\n");

      //dump($errCode);

      return $errCode;

    }

  }

}

/**

 * 发送HTTP请求方法

 * @param string $url  请求URL

 * @param array $params 请求参数

 * @param string $method 请求方法GET/POST

 * @return array $data  响应数据

 */

function http($url, $params, $method = 'GET', $header = array(), $multi = false){

  $opts = array(

    CURLOPT_TIMEOUT    => 30,

    CURLOPT_RETURNTRANSFER => 1,

    CURLOPT_SSL_VERIFYPEER => false,

    CURLOPT_SSL_VERIFYHOST => false,

    CURLOPT_HTTPHEADER   => $header

  );

  /* 根据请求类型设置特定参数 */

  switch(strtoupper($method)){

    case 'GET':

      $opts[CURLOPT_URL] = $url . '?' . http_build_query($params);

      break;

    case 'POST':

      //判断是否传输文件

      $params = $multi ? $params : http_build_query($params);

      $opts[CURLOPT_URL] = $url;

      $opts[CURLOPT_POST] = 1;

      $opts[CURLOPT_POSTFIELDS] = $params;

      break;

    default:

      throw new Exception('不支持的请求方式！');

  }

  /* 初始化并执行curl请求 */

  $ch = curl_init();

  curl_setopt_array($ch, $opts);

  $data = curl_exec($ch);

  $error = curl_error($ch);

  curl_close($ch);

  if($error) throw new Exception('请求发生错误：' . $error);

  return $data;

}

// 获取用户信息

  wx.getSetting({

   success: res => {

    if (res.authSetting['scope.userInfo']) {

     // 已经授权，可以直接调用 getUserInfo 获取头像昵称，不会弹框

     wx.getUserInfo({

      success: res => {

       console.log(res);

       var encryptedData = res.encryptedData

       var iv = res.iv

       wx.request({

        url: "https://你的服务器地址/dologin",//dologin是访问后端的方法

        method: "post",

        data: {

         code: code,

         encryptedData: encryptedData,

         iv: iv

        },

        success: function (ret) {

         console.log(ret);

        }

       })

       // 可以将 res 发送给后台解码出 unionId

       this.globalData.userInfo = res.userInfo

       // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回

       // 所以此处加入 callback 以防止这种情况

       if (this.userInfoReadyCallback) {

        this.userInfoReadyCallback(res)

       }

      }

     })

    }

   }

  })

 },