CI 프레임워크 기반 WeChat 웹페이지 인증 라이브러리 분석

<?php

if ( ! defined('BASEPATH')) exit('No direct script access allowed');

Class Weixin

{

    private $appId;

    private $appSecret;

    function __construct()

    {

      $this->appId = trim('你的appid');

      $this->appSecret = trim('你的appsecret');

    }

    function redirect_url($redirect)

    {

      /*授权页面*/

      $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=$this->appId&redirect_uri=$redirect&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";

      return $url;

    }

    /* 通过code换取access_token*/

    function access_token($code)

    {

      /*获取到的code换取access_token和openid*/

      $post_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$this->appId&secret=$this->appSecret&code=$code&grant_type=authorization_code";

             // echo $post_url;exit();

      $return = $this->postdata($post_url);

      // print_r($return);exit();

      $access_token = $return['access_token'];

      $openid = $return['openid'];

      /*获取微信用户数据*/

      $get_userinfo = "https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openid&lang=zh_CN";

      $userinfo = json_decode(file_get_contents($get_userinfo));

      return $userinfo;

    }

    function eff($access_token,$openid)

    {

      /*检测access_token是否正确，errcode＝0 为正确*/

      $eff_url = "https://api.weixin.qq.com/sns/auth?access_token=$access_token&openid=$openid";

      $get_eff =json_decode(file_get_contents($eff_url));

      return $get_eff;

    }

    //通过curl方式提交code换取access_token数据

    function postdata($url)

    {

       header('Content-Type:text/html;charset=utf-8');

       // echo $url;exit();

      $curl = curl_init();

      curl_setopt($curl, CURLOPT_URL, $url);

      curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);

      curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);

      curl_setopt($curl, CURLOPT_SSLVERSION, 1);

      // if (!empty($data)){

        // curl_setopt($curl, CURLOPT_POST, 1);

        // curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

      // }

      curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

      $output = curl_exec($curl);

      curl_close($curl);

      // var_dump($output);exit();

      // print_r($output);exit();

      $access = json_decode($output,true);

      return $access;

    }

    /*

      这个位置开始是控制器index()传入的微信用户资料处理

    */

      function save_session($data)

      {

        foreach ($data as $key => $value) {

          // $_SESSION['uid'] = $value['uid'];

          // $_SESSION['nickname'] = $value['nickname'];

          // $_SESSION['fullname'] = $value['fullname'];

          // $_SESSION['status'] = $value['status'];

          // $_SESSION['groups'] = $value['groups'];

          $_SESSION[$key] = $value;

        }

        return $_SESSION;

        // print_r($_SESSION);exit();

        // unset($_SESSION[0]);

      }

    function obj_to_arr($data)

    {

      // 进行转换成数组 使用 obj_to_arr方式

      $data = is_object($data)?get_object_vars($data):$data;

        foreach ($data as $key => $value)

        {

          $arr[$key] = $value;

        }

        return $arr;

    }

}

<?php

if ( ! defined('BASEPATH')) exit('No direct script access allowed');

Class Coupon_index extends CI_Controller

{

    function __construct()

    {

      parent::__construct();

      $this->load->library(array('weixin','session'));

      $this->load->helper('url');

      // $this->load->ldap_mod_del(link_identifier, dn, entry)

      $this->load->model('Coupon_model');

    }

    /**

     *优惠券主程序

     */

    function index()

    {

      $this->load->view('/coupon/index.html');

    }

    function User_exists()

    {

      /*

        检测改微信用户是否存在

        $user_arr 获取的是通过get_code返回的微信用户信息，此时的信息是通过微信服务器返回的，不能记录session

        $user std_obj模式，转换为数组

        $user_exists 扔入model中，检测数据表中是否存在该用户

        $redirect 走完流程后，跳转到首页

        if语句的作用，是 判断通过model返回数据表的信息，如果为空则把微信用户信息录入到表中，再读取出来，存进session。

        else 则数据表已经存在该用户，直接读取，存进session

        需要注意的是，使用foreach的原因，是二维数组转一维数组

      */

        $user_arr = $this->Get_code();

        // var_dump($user_arr);exit();

        $user = $this->weixin->obj_to_arr($user_arr);

        // var_dump($user);exit();

        // print_r($user);exit();

        $user_exists = $this->Coupon_model->CheckUser('cou_user',$user);

        // print_r($user_exists);exit();

        // $redirect = 'http://yourwebname.com/coupon/index.php/Coupon/Coupon_index/Coupon_Get/bid/1';

        // $return_url = $this->session->return_url;

        $redirect = 'http://yourwebname.com'.$this->session->return_url;

        // echo $redirect;exit();

        if(empty($user_exists))

        {

           /*

         由于微信获取到的用户数据是stdclass对象格式

         所以需要进行转换成数组 使用 obj_to_arr方式

         */

        //加入自定义的字符进入数组

        unset($user['privilege']);

        $user_exists['nickname']   = $user['nickname'];

        $user_exists['openid']    = $user['openid'];

        $user_exists['language']   = $user['language'];

        $user_exists['city']     = $user['city'];

        $user_exists['country']    = $user['country'];

        $user_exists['province']   = $user['province'];

        $user_exists['headimgurl']  = $user['headimgurl'];

        $user_exists['sex']      = $user['sex'];

        $user_exists['fullname']   = $user['nickname'];

        $user_exists['telphone']   = '';

        $user_exists['login_ip']   =$this->input->ip_address();

        $user_exists['last_ip']    =$this->input->ip_address();

        $user_exists['groups']    = REGISTER_GROUP_ID;

        $user_exists['status']    = 1;

        $user_exists['login_time']  = date("Y-m-d");

         $insert_id = $this->Coupon_model->insert_one('cou_user',$user_exists);

        $user_exists['uid'] = $insert_id;

        }

        else{

         $user_exists = $user_exists[0];

        }

        // $return_url = $this->session->back_url;

        // if(isset($return_url))header('location:'.$return_url);

        /*由Coupon_idex中的Get_Coupon处理*/

        $this->session->set_userdata($user_exists);

        if(isset($this->session->return_url))header('location:'.$this->session->return_url);

        // print_r($user_exists);exit();

        header('location:'.$redirect);

    }

    function Coupon_start()

    {

      /*进入领取页面，需要先经过授权*/

      $redirect_url = 'Coupon/Coupon_index/User_exists';

      $redirect = urlencode('http://yourwebname.com/coupon/index.php/'.$redirect_url);

      // $redirect = urlencode('http://yourwebname.com/coupon/index.php/Coupon/Coupon_index/Get_code');

      $return = $this->weixin->redirect_url($redirect);

       header('location:'.$return);

    }

    public function Get_code()

    {

      if(isset($_GET['code']))

      {

        $code = $_GET['code'];

        // echo $code;exit();

        $user_arr = $this->weixin->access_token($code);

        //跳转到用户检测中check_exists()去

        // echo $user_arr;exit();

        // var_dump($user_arr);

        return $user_arr;

      }else{

        //否则检测cookie中是否存在该用户，如果有，则return回首页

          echo 'error';

      }

     }

     public function Coupon_Get()

     {

      /*获取商家bid，读取相关信息*/

      // $b_name = $this->uri->segment(4, 0);

      $nickname = $this->session->nickname;

      $openid = $this->session->openid;

      $status = $this->session->status;

      $_SESSION['return_url'] = $_SERVER['REQUEST_URI'];

      // $this->session->set_userdata($return_url);

      // echo $this->session->return_url;exit();

      if(empty($nickname))header('location:'.'http://yourwebname.com/coupon/index.php/Coupon/Coupon_index/Coupon_start');

      $bid = $this->uri->segment(5, 0);

      /*扔进Coupon_model中，读取bid中的商家信息*/

      $content = $this->Coupon_model->Coupon_Business('cou_business',$bid);

      // print_r($content);

      // echo $bid;

      // echo $b_name;

      $data['bname']   = $content['bname'];

      $data['discount']  = $content['discount'];

      $data['bimg']    = $content['bimg'];

      $data['contents']  = $content['contents'];

      $data['amount']   = $content['amount'];

      $data['nickname']  = $nickname;

      $data['status']   = $status;

      $data['js'] = json_encode(array($content['bname'],$content['discount'],$nickname,$status));

      // echo $data['js'];exit();

      // print_r($data);

      $this->load->view('/coupon/index.html',$data);

      // echo $nickname;

      // echo $status;

    }

}