protected $appid = '****************';         //微信 appid
protected $appsecrt = '******************';     //微信 appsecrt

//-----------静默授权   （不能获取用户的昵称、头像，要获取用户的昵称和头像使用  用户确认授权）
public function getBaseInfo()
{
    //获取code
    $redirect_uri = urlencode("http://www.******.com/index/index/getWxCode");//回调地址
    $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" . $this->appid . "&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_base&state=123#wechat_redirect"; //state 可任意

    $this->redirect($url, 302);// tp5的重定向方法 
}

public function getWxCode()
{
    //获取access_token
    //获取openID
    $code = $_GET['code'];
    $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $this->appid . "&secret=" . $this->appsecrt . "&code=$code&grant_type=authorization_code";

    $r = http_curl($url);
    $openid = $r['openid'];
    $access_token = $r['access_token'];
    var_dump('access_token是：' . $access_token . '=========' . 'openid是：' . $openid);
}


//-------------------------------end-----------------------------------

//-----------用户确认授权          
public function getCodeUserInfo($temp)
{
    //获取code
    $redirect_uri = urlencode("http://zs.zs13ce.gx.cn/index/index/getWxUserInfo");//回调地址
    $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" . $this->appid . "&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_userinfo&state=$temp&connect_redirect=1#wechat_redirect"; //state 可任意

    $this->redirect($url, 302);// tp5的重定向方法 
}

public function getWxUserInfo()
    {
        //换取网页授权access_token
        //获取openid
        $code = $this->request->param('code');
        $state = $this->request->param('state');
        $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $this->appid . "&secret=" . $this->appsecrt . "&code=" . $code . "&grant_type=authorization_code";
        $rjson = http_curl($url);
        $access_token = $rjson['access_token'];//得到access_token ( 网页的)
        $openId = $rjson['openid'];//得到openid
        $userInfoUrl = "https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=" . $this->appid . "&lang=zh_CN";//获取用户信息

        $result = http_curl($userInfoUrl);
//        var_dump($result);//打印用户详细信息
//        die;
        if (empty($result)) {
            echo 0;die;
        }
        $user = Db::name("user")->where("openid", $result["openid"])->find();
        if (empty($user)) {
            //如果表里没有，则插入
        }
        $this->_user = $user;
        $this->setIsSq($user);
        $this->redirect(url($state), 302);// tp5的重定向方法 
    }

function http_curl($url, $data=[])
{
    $curl = curl_init();//初始化
    curl_setopt($curl, CURLOPT_URL, $url);//设置抓取的url
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);// https请求 不验证证书和hosts
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($curl, CURLOPT_HEADER, 0);//  设置头文件的信息作为数据流输出  设置为1 的时候，会把HTTP信息打印出来  不要http header 加快效率
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//设置获取的信息以文件流的形式返回，而不是直接输出。 如果设置是0，打印信息就是true
    curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data,true));
    $data = curl_exec($curl);//执行命令
    $result = json_decode($data, true);
    if ($data == false) {
        echo "Curl Error:" . curl_error($curl);
        exit();
    }
    curl_close($curl);//关闭URL请求
    return $result;
}