微信扫描二维码登录网站代码示例

请先下载  snoopy 类

<?php

/**

 *  微信公众平台PHP-SDK

 *  Wechatauth为非官方微信登陆API

 *  用户通过扫描网页提供的二维码实现登陆信息获取

 *  主要实现如下功能:

 *  get_login_code() 获取登陆授权码, 通过授权码才能获取二维码

 *  get_code_image($code='') 将上面获取的授权码转换为图片二维码

 *  verify_code() 鉴定是否登陆成功,返回200为最终授权成功.

 *  get_login_cookie() 鉴定成功后调用此方法即可获取用户基本信息

 *  sendNews($account,$title,$summary,$content,$pic,$srcurl='') 向一个微信账户发送图文信息

 *  get_avatar($url) 获取用户头像图片数据

 *  @author dodge <[e-mail]>

 *  @link https://github.com/dodgepudding/wechat-php-sdk

 *  @version 1.1

 *  

 */

include "snoopy.class.php";

class Wechatauth

{

        private $cookie;

        private $_cookiename;

        private $_cookieexpired = 3600;

        private $_account = 'test';

        private $_datapath = './data/cookie_';

        private $debug;

        private $_logcallback;

        public $login_user; //当前登陆用户, 调用get_login_info后获取

        

        public function __construct($options)

        {

                $this->_account = isset($options['account'])?$options['account']:'';

                $this->_datapath = isset($options['datapath'])?$options['datapath']:$this->_datapath;

                $this->debug = isset($options['debug'])?$options['debug']:false;

                $this->_logcallback = isset($options['logcallback'])?$options['logcallback']:false;

                $this->_cookiename = $this->_datapath.$this->_account;

                $this->getCookie($this->_cookiename);

        }

        /**

         * 把cookie写入缓存

         * @param  string $filename 缓存文件名

         * @param  string $content  文件内容

         * @return bool

         */

        public function saveCookie($filename,$content){

                return file_put_contents($filename,$content);

        }
        /**

         * 读取cookie缓存内容

         * @param  string $filename 缓存文件名

         * @return string cookie

         */

        public function getCookie($filename){

                if (file_exists($filename)) {

                        $mtime = filemtime($filename);

                        if ($mtime<time()-$this->_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);

                }

        }

        

        /**

         * 获取登陆二维码对应的授权码

         */

        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.uuid\s+=\s+\"([^\"]+)\"/",$result,$matches);

                        if(count($matches)>1) {

                                $this->_logincode = $matches[1];

                                $_SESSION['login_step'] = 0;

                                return $this->_logincode;

                        }

                }

                return $result;

        }
        /**

         * 通过授权码获取对应的二维码图片地址

         * @param string $code

         * @return string image url

         */

        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';

        }

        

        /**

         * 设置二维码对应的授权码

         * @param string $code

         * @return class $this

         */

        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;

        }

        

        /**

         * 获取登陆的cookie

         *

         * @param bool $is_array 是否以数值方式返回，默认否，返回字符串

         * @return string|array

         */

        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;

        }

        

        /**

         *          授权登陆后获取用户登陆信息

         */

        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;

        }

        

        /**

         *  获取头像

         *  @param string $url 传入从用户信息接口获取到的头像地址

         */

        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;

        }

        

        /**

         * 登出当前登陆用户

         */

        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;

        }

}

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