ThinkPHP网页端网站应用接入微信登录

1.首先要登录微信开放平台：微信开放平台 (qq.com)

 2.创建网站应用，按照要求填写即可

需要注意的一点是，授权回调域必须填写域名，不要填写错误

3.创建完成后就能够获得AppID和AppSecret，需要记录好，如果后面记不得了的话就得重置了。

4.这时候就要进入代码部分了，

js:

        $(".wx").click(function(){
            window.location.href = "http://191app.com/user/weixin";
        });

php:(Thinkphp3.2框架)

　　/**
    *微信登陆 
     **/
    public function weixin()
    {
        // $pay_url = SITE_URL;
        //-------配置
        $href = $_SERVER['HTTP_REFERER'];
        cookie('href', $href, 3600000);
        $AppID = 'wx37xxxxxxxxxxxxx';//这里就需要上一步得到的AppID和AppSecret
        $AppSecret = '864c0xxxxxxxxxxxxxxxxxxxxxxxxxxx';
        $callback  = SITE_URL . 'user/weixin_callback'; //回调地址，这里的地址一定要与授权回调域填写的域名是同域名下
        //微信登录
        session_start();
        //-------生成唯一随机串防CSRF攻击
        $state  = md5(uniqid(rand(), TRUE));
        $_SESSION["wx_state"]    = $state; //存到SESSION
        $callback = urlencode($callback);
        $wxurl = "https://open.weixin.qq.com/connect/qrconnect?appid=" . $AppID . "&redirect_uri={$callback}&response_type=code&scope=snsapi_login&state={$state}#wechat_redirect";
        header("location: $wxurl"); 
    }
    /**
    *微信登陆回调
     **/
    public function weixin_callback()
    {
        if ($_GET['code'] != "") {
            $AppID = 'wx37xxxxxxxxxxxxx';
$AppSecret = '864c0xxxxxxxxxxxxxxxxxxxxxxxxxxx';
$url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . $AppID . '&secret=' . $AppSecret . '&code=' . $_GET['code'] . '&grant_type=authorization_code';
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
            curl_setopt($ch, CURLOPT_URL, $url);
            $json =  curl_exec($ch);
            curl_close($ch);
            $arr = json_decode($json, 1);

            if (isset($arr['errcode'])) {
                echo $arr['errmsg'];
                exit;
            }

            //得到 access_token 与 openid
            $url = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $arr['access_token'] . '&openid=' . $arr['openid'] . '&lang=zh_CN';
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
            curl_setopt($ch, CURLOPT_URL, $url);
            $json =  curl_exec($ch);
            curl_close($ch);
            $arr = json_decode($json, 1);//这里的$arr就是得到的用户信息，里面有openid和unionid 等用户的数据

            $user_model = D('Member');
            $openid=$arr['openid'];
            $unionid = $arr['unionid'];
            $from = I("get.from",0,"intval");
            $channel = I("get.channel",0,"intval");
            $username = $this->generate_str(10);//生成10位随机数作为随机账号
            $password = '1911234567890';//密码
            $wx_uinfo = $user_model->checkWeixinUser($openid);//查看是否存在该用户
            if($wx_uinfo){
　　　　　　　　　　//如果存在的话进行登录操作
                $user_model->login($wx_uinfo);
                unset($_SESSION['loginfail']);
                $href = SITE_URL . 'bxcq/server';
                echo "<meta http-equiv=refresh content='0; url=$href'>";
            }else{
　　　　　　　　　　//不存在的话注册用户
                //插入用户表，存入MEMCACHE SESSION
                $user_model->register($username, md5($username.$password),$from,0,$channel,1,$openid,$unionid);
                $href = SITE_URL . 'bxcq/server';
                echo "<meta http-equiv=refresh content='0; url=$href'>";
            }
        }
    }

最终的效果就是这样的了：

 

 

微信开放平台 (qq.com)