Sample code for WeChat QR code scan to log on to the website

Source: Internet
Author: User
Users can obtain login information by scanning the QR code provided by the webpage. For more information, please download the snoopy class first.

The code is as follows:
/**
* Public platform PHP-SDK
* Wechatauth is an unofficial API login
* Users can obtain login information by scanning the QR code provided by the webpage.
* Mainly implements the following functions:
* Get_login_code () obtains the logon authorization code. only the two-dimensional code can be obtained through the authorization code.
* Get_code_image ($ code = '') converts the authorization code obtained above to the image QR code
* Verify_code () indicates whether the logon is successful. if 200 is returned, the final authorization is successful.
* After the get_login_cookie () authentication is successful, call this method to obtain basic user information.
* SendNews ($ account, $ title, $ summary, $ content, $ pic, $ srcurl = '') sends graphic information to an account
* Get_avatar ($ url) obtains the user's profile picture data
* @ Author dodge
* @ 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; // The current login user, which is obtained after get_login_info is called.

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 );
}
/**
* Write the cookie to the cache.
* @ Param string $ filename cache file name
* @ Param string $ content file content
* @ Return bool
*/
Public function saveCookie ($ filename, $ content ){
Return file_put_contents ($ filename, $ content );
}

/**
* Read cookie cache content
* @ Param string $ filename cache file name
* @ Return string cookie
*/
Public function getCookie ($ filename ){
If (file_exists ($ filename )){
$ Mtime = filemtime ($ filename );
If ($ mtime _ Cookieexpired) return false;
$ Data = file_get_contents ($ filename );
If ($ data) $ this-> cookie = $ data;
}
Return $ this-> cookie;
}

/*
* Delete a 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 );
}
}

/**
* Obtain the authorization code corresponding to the login QR code
*/
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 = Signature & redirect_uri = https % 3A % 2F % 2Fwx.qq.com % 2Fcgi-bin % 2Fmmwebwx-bin % 2 Fwebwxnewloginpage & 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;
}

/**
* Obtain the corresponding QR code image address using the authorization code
* @ 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/'.w.this-> _ logincode .'? T = webwx ';
}

/**
* Set the authorization code corresponding to the QR code
* @ Param string $ code
* @ Return class $ this
*/
Public function set_login_code ($ code ){
$ This-> _ logincode = $ code;
Return $ this;
}

/**
* Qr code login verification
*
* @ 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;
}

/**
* Obtain the logon cookie.
*
* @ Param bool $ is_array: whether to return a value. The default value is no. the returned string is
* @ 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;
}

/**
* Obtain user login information after authorized 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 ['cookies'] = $ 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;
}

/**
* Get the Avatar
* @ Param string $ url refers to the Avatar address obtained from the user information interface.
*/
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 ['cookies'] = $ this-> Cookie;
$ Send_snoopy-> referer = "https://wx.qq.com /";
$ Send_snoopy-> fetch ($ url );
$ Result = $ send_snoopy-> results;
If ($ result)
Return $ result;
Else
Return false;
}

/**
* Log out of the current login user
*/
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 ['cookies'] = $ 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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