[PHP知识库]thinkphp5.1 使用php curl 巧妙获取openId(接口模式)

    public  function   get_url(){
        $https=Request::domain();
        $REQUEST_URI = $_SERVER['REQUEST_URI'];
        $redirect_uri = urlencode($https . $REQUEST_URI);
        //code判断是否是回调请求
        $code =input('param.code',false);
        $appid=$this->appid;
        $appsecret=$this->secret;
        if (! $code) {
            // 网页授权要用snsapi_base 用另外一个  就不能当接口了
            $autourl = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_base&state=123#wechat_redirect";
            $this->redirect($autourl);
        } else {
            // 获取openid
            $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$appsecret&code=$code&grant_type=authorization_code";
            //panApi封装curl请求 都是基本的参数  就不贴出来了
            return panApi($url,[],'post');
        }
    }