getting the details of the user indicates that 40163 error code has been used, but I have not stored or used code. This error occurs every time, and it has not been successfully authorized. And this page will appear when calling the callback function getDetailInfo. I don"t see if anyone else"s =
. 
Code
public function getUserDetail(){
$appid="wxccc324b35ed44896";
$redirect_uri=urlencode("http://flowerwithpiggy.duapp.com/index.php/Weixin/getDetailInfo");
$url="https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appid."&redirect_uri=".$redirect_uri."&response_type=code&scope=snsapi_userinfo&state=123-sharpwechat_redirect";
//
header("location:".$url);
}
/**
* access_token
* @return [type] [description]
*/
public function getDetailInfo(){
$appid="wxccc324b35ed44896";
$secret="a23db7dedbdab946f473e26d07199f6e";
$code=$_GET["code"];
$url="https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$secret."&code=".$code."&grant_type=authorization_code";
$res=$this->http_curl($url);
// if($res["errcode"]){
// }
$access_token=$res["access_token"];
var_dump($res);
$openid=$res["openid"];
$url="https://api.weixin.qq.com/sns/userinfo?access_token=".$access_token."&openid=".$openid."&lang=zh_CN";
$res=$this->http_curl($url);
var_dump($res);
}