先到微信官方申请一个登录应用,获得appid和appsecret。

然后就开始上代码了:

1,新建一个第三方类放在ThinkPHP\Library\Org\Util里面,当然你也可以放在其他目录里(记得修改命名空间哦)。

<?php
namespace Org\Util;

class WeChatAuth {
    private $app_id = ')()*&……%¥#@@¥%……%&*';//你自己的
    private $app_secret = '!@#¥%……&……%¥#¥*……&%¥#';//也是你自己的
 
    /**
     * 获取微信授权链接
     * 
     * @param string $redirect_uri 跳转地址
     * @param mixed $state 参数
     */
    public function get_authorize_url($redirect_uri = '', $state = ''){
        $redirect_uri = urlencode($redirect_uri);
        return "https://open.weixin.qq.com/connect/qrconnect?appid={$this->app_id}&redirect_uri={$redirect_uri}&response_type=code&scope=snsapi_login&state={$state}#wechat_redirect";
    }
    
    /**
     * 获取授权token
     * 
     * @param string $code 通过get_authorize_url获取到的code
     */
    public function get_access_token($app_id = '', $app_secret = '', $code = ''){
        $token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->app_id}&secret={$this->app_secret}&code={$code}&grant_type=authorization_code";
        $token_data = $this->http($token_url);
        
        if($token_data[0] == 200){
            return json_decode($token_data[1], TRUE);
        }
        return FALSE;
    }
    
    /**
     * 获取授权后的微信用户信息
     * 
     * @param string $access_token
     * @param string $open_id
     */
    public function get_user_info($access_token = '', $open_id = ''){
        if($access_token && $open_id){
            $info_url = "https://api.weixin.qq.com/sns/userinfo?access_token={$access_token}&openid={$open_id}&lang=zh_CN";
            $info_data = $this->http($info_url);
            
            if($info_data[0] == 200){
                return json_decode($info_data[1], TRUE);
            }
        }
        return FALSE;
    }

    /**
     * 验证授权
     * 
     * @param string $access_token
     * @param string $open_id
     */
    public function check_access_token($access_token = '', $open_id = ''){
        if($access_token && $open_id){
            $info_url = "https://api.weixin.qq.com/sns/auth?access_token={$access_token}&openid={$open_id}&lang=zh_CN";
            $info_data = $this->http($info_url);
            
            if($info_data[0] == 200){
                return json_decode($info_data[1], TRUE);
            }
        }
        return FALSE;
    }

    public function http($url, $method, $postfields = null, $headers = array(), $debug = false){
        $ci = curl_init();
        curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
        curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, 30);
        curl_setopt($ci, CURLOPT_TIMEOUT, 30);
        curl_setopt($ci, CURLOPT_RETURNTRANSFER, true);
        switch ($method) {
            case 'POST':
                curl_setopt($ci, CURLOPT_POST, true);
                if (!empty($postfields)) {
                    curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
                    $this->postdata = $postfields;
                }
                break;
        }
        curl_setopt($ci, CURLOPT_URL, $url);
        curl_setopt($ci, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ci, CURLINFO_HEADER_OUT, true);
 
        $response = curl_exec($ci);
        $http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
 
        if ($debug) {
            echo "=====post data======\r\n";
            var_dump($postfields);
 
            echo '=====info=====' . "\r\n";
            print_r(curl_getinfo($ci));
 
            echo '=====$response=====' . "\r\n";
            print_r($response);
        }
        curl_close($ci);
        return array($http_code, $response);
    }
}

2,然后再需要用到的控制器里引入:use \Org\Util\WeChatAuth;

3,然后开始写代码了:

public function index(){
    $Wechat=new WeChatAuth();
    echo "<pre>";
    $token = session('token'); //查看是否已经授权
    if (!empty($token)) {
        var_dump('TOKEN:');
        var_dump($token);
        $state = $Wechat->check_access_token($token['access_token'],$token['openid']); //检验token是否可用(成功的信息:"errcode":0,"errmsg":"ok")
        var_dump('检验token是否可用:');
        var_dump($state);
    }
    $url = $Wechat->get_authorize_url('http://www.*******.com/welogin/index.php/home/index/test2','1'); //此处链接授权后,会跳转到下方处理
    echo '<a href='.$url.'>点击授权登陆</a></pre>';
}

public function test2(){
    $Wechat=new WeChatAuth();
    $token = $Wechat->get_access_token('','',$_GET['code']); //确认授权后会,根据返回的code获取token
    session('token',$token); //保存授权信息
    $user_info = $Wechat->get_user_info($token['access_token'],$token['openid']); //获取用户信息
    echo "登录成功:用户信息:<pre>";
    var_dump($user_info);
    echo '</pre>';
}

这样访问index方法。点击“点击授权登陆”就可以看到登录二维码了。扫描登录成功后会跳转到test2方法里。

最后:很简单,大致就这样了,后面就是根据具体需求改改代码了。

微信登录在thinkphp中使用就是这么简单!。。。。

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