WeChat web page authorization portal code

It is very good to implement web page authorization login for websites without public accounts
<?php<br /> // +-------------------------------------------------- -----------------------<br /> // | OneThink [ WE CAN DO IT JUST THINK IT ]<br /> // +-------------------------------------------------- -----------------------<br /> // | Copyright (c) 2013 http://www.onethink.cn All rights reserved.<br /> // +-------------------------------------------------- -----------------------<br /> // | Author: Art Network <br /> // +-------------------------------------------------- -----------------------<br /> namespace HomeController;<br /> use ThinkController;<br /> /**<br /> * Public account management<br /> ​*/ <br /> class WebauthController extends Controller { <br /> /*id Public account ID<br /> *url jump address<br /> *scope authorization method false silent authorization<br /> */<br /> Public function index(){<br />             // $map ['id'] = '114';//I ( 'id', 0, 'intval' );<br />              // $info = M ( 'member_public' )->where ( $map )->find (); <br>          $info=array(<br> ‘appid’ => , <br>                 'appsecret' => ,             );<br> <br>          $redirect_url=U('Webauth/index');//Callback address<br>          $code=I('get.code');<br>          $scope=I('get.scope');<br>            if(empty($scope)){<br>                 $scope=false;<br>           }else{<br>                $scope=true;<br>         }<br> If(empty($code)){ <br>               $url='http://ky.xebox.cn/index.php/Index/Index/index/';//Sending address<br> Yoauth($info['appid'],$redirect_url,$scope,$url);<br>         }<br>          $data=Yoauth_access_token($info['appid'],$info['secret'],$code); <br>          $canshu=http_build_query($data); <br> echo $URL=I('get.state').'?'.$canshu;<br>           redirect($URL);<br> } <br> } <br> /***********************************WeChat webpage authorization*************** **************************/<br> <br> /* Step one: User agrees to authorize and obtain code <br> $appid;//Public account appid<br> $redirect_url;//The callback link address redirected after authorization, please use urlencode to process the link<br> $response_type; //Return type, please fill in the code<br> $scope;//Application authorization scope, snsapi_base does not pop up the authorization page, jumps directly, and can only get the user openid), snsapi_userinfo (pops up the authorization page, you can get the nickname, gender, and location through openid. And, even if you are not following In the case of , as long as the user authorizes it, his information can also be obtained)<br> $state;//The state parameter will be included after redirection. You can fill in the official account ID to determine which official account the user comes from<br> */ <br> function Yoauth($appid,$redirect_url,$scope=true,$state='ypwl',$response_type="code"){ <br> If($scope){<br>          $scope='snsapi_userinfo';//Pop-up web page authorization<br> }else{<br>          $scope='snsapi_base';//Silent authorization<br> }<br>$map ['appid'] = $appid;<br> $map ['redirect_uri'] = $redirect_url;<br> $map ['response_type'] = $response_type;<br> $map ['scope'] = $scope;<br> $map ['state'] = $state;<br> $url = 'https://open.weixin.qq.com/connect/oauth2/authorize?' . http_build_query ( $map ) . '#wechat_redirect';<br> Redirect($url); <br> }<br> /* Step 2: Exchange the code for webpage authorization access_token and obtain user information to omit the following steps<br> Note: If this step is done in silent mode, it will be completed and the user's openid will be returned directly. The snsapi_base-style web page authorization process ends here. <br> The appid is the unique identifier of the official account<br> The secret is the appsecret of the official account<br> code is to fill in the code parameters obtained in the first step<br> Grant_type is filled in as authorization_code <br> */<br> function Yoauth_access_token($appid,$secret,$code,$grant_type='authorization_code'){ <br> $map ['appid'] = $appid;<br> $map ['secret'] = $secret;<br> $map ['code'] = $code;<br> $map ['grant_type'] = $grant_type; <br> $url = 'https://api.weixin.qq.com/sns/oauth2/access_token?'. http_build_query ( $map ) ;<br> $content = file_get_contents ( $url );<br> $content = json_decode ($content, true);<br> If (! empty ( $content ['errmsg'] )) {<br> exit ( $content ['errcode'].'--'.$content['errmsg'] );<br> }<br> //Determine the authorization method<br> If($content['scope'] == 'snsapi_userinfo'){<br>          $content=Yoauth_userinfo($content['access_token'],$content['openid']);//Get WeChat user information<br> }<br> Return $content;<br> }<br> /*<br> Step 3: Refresh access_token (if needed) <br> */<br> /* Step 4: Pull user information (need to have scope snsapi_userinfo)<br> Access_token Web page authorization interface call certificate, note: this access_token is different from the basic supported access_token<br> Openid The user’s unique identifier<br> ​​lang​​Return to the country and region language version, zh_CN Simplified Chinese, zh_TW Traditional Chinese, en English<br> */<br> function Yoauth_userinfo($access_token,$openid,$lang='zh_CN'){ <br> $map ['access_token'] = $access_token;<br> $map ['openid'] = $openid;<br> $map ['lang'] = $lang; <br> $url = 'https://api.weixin.qq.com/sns/userinfo?'. http_build_query ( $map );<br> $content = file_get_contents ( $url );<br> $content = json_decode ($content, true);<br> If (! empty ( $content ['errmsg'] )) {<br> exit ( $content ['errcode'].'--'.$content['errmsg'] );<br> }<br> Return $content;<br> } <br> /* User openid gets user information<br> access_token is the calling interface credential<br> Openid is the identification of an ordinary user, unique to the current official account<br>​ lang ​ No ​ Return to the country and region language version, zh_CN Simplified Chinese, zh_TW Traditional Chinese, en English <br> */<br> function Yget_wx_userinfo($openid,$access_token,$lang='zh_CN'){<br> $map ['access_token'] = $access_token;<br> $map ['openid'] = $openid;<br> $map ['lang'] = $lang; <br> $url = 'https://api.weixin.qq.com/cgi-bin/user/info?'. http_build_query ( $map );<br> $content = file_get_contents ( $url );<br> $content = json_decode ($content, true);<br> If (! empty ( $content ['errmsg'] )) {<br> exit ( $content ['errcode'].'--'.$content['errmsg'] );<br> }<br> Return $content;<br> }