WeChat public platform OAuth2.0 web page authorization php example

Users can obtain login information by scanning the QR code provided on the web page. Please use it for reference
Please download the snoopy class first

The code is as follows:
/**
* WeChat Public Platform PHP-SDK
* Wechatauth is an unofficial WeChat login API
* Users can obtain login information by scanning the QR code provided on the web page
* Mainly implements the following functions:
* get_login_code() Obtains the login authorization code, through Only the authorization code can be obtained to obtain the QR code
* get_code_image($code='') Convert the authorization code obtained above into the image QR code
* verify_code() Verify whether the login is successful, and return 200 for the final authorization success.
* get_login_cookie( ) After successful authentication, call this method to obtain the user's basic information
* sendNews($account,$title,$summary,$content,$pic,$srcurl='') Send graphic and text information to a WeChat account
* get_avatar( $url) Get user avatar image data
* @author dodge
* @link https://github.com/dodgepudding/wechat-php-sdk
* @version 1.1
*
*/
include "snoopy.class .php";
class Wechatauth
{
                                                               /data/cookie_';
       private $debug;
                                                          use using use using using using using        out out out through ’’s ’ through ’’    ‐     ‐‐‐‐‐‐‐ public $debug; _account = isset($options['account' ])?$options['account']:''; this->debug = isset($options['debug'])?$options['debug']:false; logcallback']:false;
                  $this->_cookiename = $this->_datapath.$this->_account;
/**
                                                                           */Public Function SaveCookie ($ FILENAME, $ Content) {
Return File_Put_Contents ($ FILENAME, $ Content);
/**
                                                                               */
C Function GetCookie ($ FILENAME) {
if (file_exists($filename)) {
                                                                                                                       if ($mtime_cookieexpired) return false; 
                        $data = file_get_contents($filename); 
                        if ($data) $this->cookie = $data; 
                } 
                return $this->cookie; 
        } 

        /* 
         * 删除cookie 
         */ 
        public function deleteCookie($filename) { 
                $this->cookie = ''; 
                @unlink($filename); 
                return true; 
        } 

        private function log($log){ 
                if ($this->debug && function_exists($this->_logcallback)) { 
                        if (is_array($log)) $log = print_r($log,true); 
                        return call_user_func($this->_logcallback,$log); 
                } 
        } 

        /**
                                                                   */ 
        public function get_login_code(){ 
                if ($this->_logincode) return $this->_logincode; 
                $t = time().strval(mt_rand(100,999)); 
                $codeurl = 'https://login.weixin.qq.com/jslogin?appid=wx782c26e4c19acffb&redirect_uri=https%3A%2F%2Fwx.qq.com%2Fcgi-bin%2Fmmwebwx-bin%2Fwebwxnewloginpage&fun=new&lang=zh_CN&_='.$t; 
                $send_snoopy = new Snoopy; 
                $send_snoopy->fetch($codeurl); 
                $result = $send_snoopy->results; 
                if ($result) { 
                        preg_match("/window.QRLogin.uuids+=s+"([^"]+)"/",$result,$matches); 
                        if(count($matches)>1) { 
                                $this->_logincode = $matches[1]; 
                                $_SESSION['login_step'] = 0; 
                                return $this->_logincode; 
                        } 
                } 
                return $result; 
        } 

        /**
                                                                       */ 
        public function get_code_image($code=''){ 
                if ($code=='') $code = $this->_logincode; 
                if (!$code) return false; 
                return 'http://login.weixin.qq.com/qrcode/'.$this->_logincode.'?t=webwx'; 
        } 

        /**
                                                                           */ 
        public  function set_login_code($code) { 
                $this->_logincode = $code; 
                return $this; 
        } 

        /** 
         * 二维码登陆验证 
         * 
         * @return status: 
         * >=400: invaild code; 408: not auth and wait, 400,401: not valid or expired 
         * 201: just scaned but not confirm 
         * 200: confirm then you can get user info 
        */ 
        public function verify_code() { 
                if (!$this->_logincode) return false; 
                $t = time().strval(mt_rand(100,999)); 

                        $url = 'https://login.weixin.qq.com/cgi-bin/mmwebwx-bin/login?uuid='.$this->_logincode.'&tip=1&_='.$t; 
                        $send_snoopy = new Snoopy; 
                        $send_snoopy->referer = "https://wx.qq.com/"; 
                        $send_snoopy->fetch($url); 
                        $result = $send_snoopy->results; 
                        $this->log('step1:'.$result); 
                        if ($result) { 
                                preg_match("/window.code=(d+)/",$result,$matches); 
                                if(count($matches)>1) { 
                                        $status = intval($matches[1]); 
                                        if ($status==201) $_SESSION['login_step'] = 1; 
                                        if ($status==200) { 
                                                preg_match("/ticket=([0-9a-z-_]+)&lang=zh_CN&scan=(d+)/",$result,$matches); 
                                                $this->log('step2:'.print_r($matches,true)); 
                                                if (count($matches)>1) { 
                                                        $ticket = $matches[1]; 
                                                        $scan = $matches[2]; 
                                                        $loginurl = 'https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxnewloginpage?ticket='.$ticket.'&lang=zh_CN&scan='.$scan.'&fun=new'; 
                                                        $send_snoopy = new Snoopy; 
                                                        $send_snoopy->referer = "https://wx.qq.com/"; 
                                                        $send_snoopy->fetch($loginurl); 
                                                        $this->log('step3:'.print_r($send_snoopy->headers,true)); 
                                                        foreach ($send_snoopy->headers as $key => $value) { 
                                                                $value = trim($value); 
                                                                if(strpos($value,'Set-Cookie: ') !== false){ 
                                                                        $tmp = str_replace("Set-Cookie: ","",$value); 
                                                                        $tmp = str_replace("Path=/","",$tmp); 
                                                                        $tmp = str_replace("Domain=.qq.com; ","",$tmp); 
                                                                        $cookie.=$tmp; 
                                                                } 
                                                        } 
                                                        $cookie .="Domain=.qq.com;"; 
                                                        $this->cookie = $cookie; 
                                                        $this->saveCookie($this->_cookiename,$this->cookie); 
                                                } 
                                        } 
                                        return $status; 
                                } 
                        } 
                return false; 
        } 

        /**
                                                           */ 
        public function get_login_cookie($is_array = false){ 
                if (!$is_array)        return $this->cookie; 
                $c_arr = explode(';',$this->cookie); 
                $cookie = array(); 
                foreach($c_arr as $item) { 
                        $kitem = explode('=',trim($item)); 
                        if (count($kitem)>1) { 
                                $key = trim($kitem[0]); 
                                $val = trim($kitem[1]); 
                                if (!empty($val)) $cookie[$key] = $val; 
                        } 
                } 
                return $cookie; 
        } 

        /**陆 *Obtain user login information after the authorization login
*/ 
        public function get_login_info(){ 
                if (!$this->cookie) return false; 
                $t = time().strval(mt_rand(100,999)); 
                $send_snoopy = new Snoopy; 
                $submit = 'https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxinit?r='.$t; 
                $send_snoopy->rawheaders['Cookie']= $this->cookie; 
                $send_snoopy->referer = "https://wx.qq.com/"; 
                $send_snoopy->submit($submit,array()); 
                $this->log('login_info:'.$send_snoopy->results); 
                $result = json_decode($send_snoopy->results,true); 
                if ($result['BaseResponse']['Ret']<0) return false; 
                $this->_login_user = $result['User']; 
                return $result; 
        } 

        /**
                                                                                   */ 
        public function get_avatar($url) { 
                if (!$this->cookie) return false; 
                if (strpos($url, 'http')===false) { 
                        $url = 'http://wx.qq.com'.$url; 
                } 
                $send_snoopy = new Snoopy; 
                $send_snoopy->rawheaders['Cookie']= $this->cookie; 
                $send_snoopy->referer = "https://wx.qq.com/"; 
                $send_snoopy->fetch($url); 
                $result = $send_snoopy->results; 
                if ($result) 
                        return $result; 
                else 
                        return false; 
        } 

        /**
                                                                 */ 
        public function logout(){ 
                if (!$this->cookie) return false; 
                preg_match("/wxuin=(w+);/",$this->cookie,$matches); 
                if (count($matches)>1) $uid = $matches[1]; 
                preg_match("/wxsid=(w+);/",$this->cookie,$matches); 
                if (count($matches)>1) $sid = $matches[1]; 
                $this->log('logout: uid='.$uid.';sid='.$sid); 
                $send_snoopy = new Snoopy; 
                $submit = 'https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxlogout?redirect=1&type=1'; 
                $send_snoopy->rawheaders['Cookie']= $this->cookie; 
                $send_snoopy->referer = "https://wx.qq.com/"; 
                $send_snoopy->submit($submit,array('uin'=>$uid,'sid'=>$sid)); 
                $this->deleteCookie($this->_cookiename); 
                return true; 
        } 
}