微信扫描二维码登录网站代码示例

请先下载  snoopy 类

复制代码 代码如下:
<"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'])"/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.'"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"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"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"https://wx.qq.com/";
                $send_snoopy->submit($submit,array('uin'=>$uid,'sid'=>$sid));
                $this->deleteCookie($this->_cookiename);
                return true;
        }
}

PS：本站还提供了一个功能十分强大的二维码工具供大家使用：

http://tools.jb51.net/transcoding/jb51qrcode