微信公众平台之网页授权

此功能必须是服务号或者测试号，订阅号没有此权限。测试号可以在【开发】=》【开发者工具】=》【公众平台测试账号】申请，本文以测试号为例：

一：公众平台设置回调域名和测试账号

注：设置成你网站域名，不要加协议，举例：www.aaa.com，本地域名也可以

 

二：将下面Oauth.php放到此域名下（更改成你自己的appID和appsecret）：

<?php  
class Oauth
{
    private $appID = 'xxxxxxx';
    private $appsecret = 'xxxxxxxxxxxxxxxxxxxxxxxx';

    private $code;
    private $token;
    private $openid;

    //授权地址，未授权会跳转到这个路径进行授权（power方法的访问路径）
    private $power_url = 'http://www.wx.com/Oauth.php?method=power';
    //授权成功回调地址，授权成功后会跳转到这个路径获取用户信息（getUser方法的访问路径）
    private $redirect_uri = 'http://www.wx.com/Oauth.php?method=getUser';
    //授权日志目录
    private $log_filedir = "./logs/oauth/";

    //获取用户信息
    function getUser() {
        //判断用户session是否存在，存在直接返回[省略]

        //没有用户session则去授权获取
        $this->code = $_GET['code'];
        $token = $this->getToken();
        if($token['code']){
            header('location:' . $this->power_url);//跳转到授权页面
        }
        $url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$this->token.'&openid='.$this->openid.'&lang=zh_CN';
        $user = $this->send($url);
        $this->_log('获取用户信息：' . $this->ajax($user));
        if(!isset($user['openid'])) {
            $this->_log('获取用户信息失败！');
            return "获取信息失败，请重新进入";
        }

        //入库存session，将openid作为唯一标识[省略]

        //返回用户信息
        return $this->ajax($user);
    }

    //获取token
    public function getToken() {
        $url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$this->appID.'&secret='.$this->appsecret.'&code='.$this->code.'&grant_type=authorization_code';
        $token = $this->send($url);
        $this->_log('获取access_token：' . $this->ajax($token));
        if(isset($token['access_token'])) {
            $this->token = $token['access_token'];
            $this->openid = $token['openid'];
            return ['code'=>0, 'msg'=>'获取access_token成功'];
        }else{
            return ['code'=>1, 'msg'=>'获取access_token失败'];
        }
    }

    //网页授权
    function power() {
        //请求授权
        header('location:https://open.weixin.qq.com/connect/oauth2/authorize?appid='.$this->appID.'&redirect_uri='.$this->redirect_uri.'&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect');
    }

    /**
    * @param $url
    * @param null $_input
    * @param string $data_type
    * @return mixed
    * $_input= ["post"=>[],"refer"=>"",cookiefile='']
    */
    function send($url, $input=null, $data_type='json') {
        $ch = curl_init();
        $useragent = isset($input['useragent']) ? $input['useragent'] : 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0.2) Gecko/20100101 Firefox/10.0.2';
        curl_setopt( $ch, CURLOPT_URL, $url );
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
        curl_setopt( $ch, CURLOPT_AUTOREFERER, true );
        curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
        curl_setopt( $ch, CURLOPT_POST, isset($input['post']) );
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //不验证证书
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //不验证证书
        if( isset($input['post']) ) curl_setopt( $ch, CURLOPT_POSTFIELDS, $input['post'] );
        if( isset($input['refer']) ) curl_setopt( $ch, CURLOPT_REFERER, $input['refer'] );
        curl_setopt( $ch, CURLOPT_USERAGENT, $useragent );
        curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, ( isset($input['timeout']) ? $input['timeout'] : 5 ) );
        $result = curl_exec( $ch );
        curl_close( $ch );
        if ($data_type == 'json') {
            $result = json_decode($result,true);
        }
        return $result;
    }

    //日志记录
    private function _log($log_content){
        !is_dir($this->log_filedir) && mkdir($this->log_filedir, 0755, true);//目录不存在则创建目录
        $log_filename = $this->log_filedir . date("Ymd") . '.log';//日志文件路径

        file_put_contents($log_filename, '['.date("H:i:s").']' .PHP_EOL . $log_content . PHP_EOL."------------------------ --------------------------".PHP_EOL, FILE_APPEND);
    }

    function ajax($data)
    {
        return json_encode($data, JSON_UNESCAPED_UNICODE);
    }

}

$oauth = new Oauth();
$method = isset($_GET['method'])?$_GET['method']:'getUser';
echo $oauth->$method();

 

三：打开微信开发者工具，访问【域名/Oauth.php】

<?php  class Oauth{private $appID = 'xxxxxxx';private $appsecret = 'xxxxxxxxxxxxxxxxxxxxxxxx';
private $code;private $token;private $openid;
//授权地址，未授权会跳转到这个路径进行授权（power方法的访问路径）private $power_url = 'http://www.wx.com/Oauth.php?method=power';//授权成功回调地址，授权成功后会跳转到这个路径获取用户信息（getUser方法的访问路径）private $redirect_uri = 'http://www.wx.com/Oauth.php?method=getUser';//授权日志目录private $log_filedir = "./logs/oauth/";
//获取用户信息function getUser() {//判断用户session是否存在，存在直接返回[省略]
//没有用户session则去授权获取$this->code = $_GET['code'];$token = $this->getToken();if($token['code']){header('location:' . $this->power_url);//跳转到授权页面}$url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$this->token.'&openid='.$this->openid.'&lang=zh_CN';$user = $this->send($url);$this->_log('获取用户信息：' . $this->ajax($user));if(!isset($user['openid'])) {$this->_log('获取用户信息失败！');return "获取信息失败，请重新进入";}
//入库存session[省略]
//返回用户信息return $this->ajax($user);}
//获取tokenpublic function getToken() {$url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$this->appID.'&secret='.$this->appsecret.'&code='.$this->code.'&grant_type=authorization_code';$token = $this->send($url);$this->_log('获取access_token：' . $this->ajax($token));if(isset($token['access_token'])) {$this->token = $token['access_token'];$this->openid = $token['openid'];return ['code'=>0, 'msg'=>'获取access_token成功'];}else{return ['code'=>1, 'msg'=>'获取access_token失败'];}}
//网页授权function power() {//请求授权header('location:https://open.weixin.qq.com/connect/oauth2/authorize?appid='.$this->appID.'&redirect_uri='.$this->redirect_uri.'&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect');}
/*** @param $url* @param null $_input* @param string $data_type* @return mixed* $_input= ["post"=>[],"refer"=>"",cookiefile='']*/function send($url, $input=null, $data_type='json') {$ch = curl_init();$useragent = isset($input['useragent']) ? $input['useragent'] : 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0.2) Gecko/20100101 Firefox/10.0.2';curl_setopt( $ch, CURLOPT_URL, $url );curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );curl_setopt( $ch, CURLOPT_AUTOREFERER, true );curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );curl_setopt( $ch, CURLOPT_POST, isset($input['post']) );curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //不验证证书curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //不验证证书if( isset($input['post']) ) curl_setopt( $ch, CURLOPT_POSTFIELDS, $input['post'] );if( isset($input['refer']) ) curl_setopt( $ch, CURLOPT_REFERER, $input['refer'] );curl_setopt( $ch, CURLOPT_USERAGENT, $useragent );curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, ( isset($input['timeout']) ? $input['timeout'] : 5 ) );$result = curl_exec( $ch );curl_close( $ch );if ($data_type == 'json') {$result = json_decode($result,true);}return $result;}
//日志记录private function _log($log_content){        !is_dir($this->log_filedir) && mkdir($this->log_filedir, 0755, true);//目录不存在则创建目录        $log_filename = $this->log_filedir . date("Ymd") . '.log';//日志文件路径
        file_put_contents($log_filename, '['.date("H:i:s").']' .PHP_EOL . $log_content . PHP_EOL."------------------------ --------------------------".PHP_EOL, FILE_APPEND);}
function ajax($data){    return json_encode($data, JSON_UNESCAPED_UNICODE);}
}
$oauth = new Oauth();$method = isset($_GET['method'])?$_GET['method']:'getUser';echo $oauth->$method();