微信网页授权接口获取不到code,报错41008 缺少oauth

附上3段逻辑代码+报错。

一.调用第三方接口的方法

function https_request($url,$type="get",$res="json",$data = ''){

//1.初始化curl

$curl = curl_init();

//2.设置curl的参数

curl_setopt($curl, CURLOPT_URL, $url);

curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);

curl_setopt($curl, CURLOPT_SSL_VERIFYHOST,2);

curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

if ($type == "post"){

      curl_setopt($curl, CURLOPT_POST, 1);

      curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

}

//3.采集

$output = curl_exec($curl);

//4.关闭

curl_close($curl);

if ($res == 'json') {

     return json_decode($output,true);

     }

}

---

二.获取用户的openid

function getBaseInfo(){

//1.获取到code

$appid = "我的Id";

$redirect_uri = urlencode("http://www.XXXX.com/XXXX/XXXX.php/Index/getUserOpenId");

$url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appid."&redirect_uri=".$redirect_uri."&response_type=code&scope=snsapi_base&state=614#wechat_redirect";

header('location:'.$url);

}

---

三.获取用户的access_token

function getUserOpenId(){

$appid = "我的ID";

$appsecret = "我的appsecret";

$code=$_GET['code'];

//2.获取到网页授权的access_token

$url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$appsecret."&code=".$code."&grant_type=authorization_cod";

//3.拉取用户的openid

$res = $this->https_request($url,'get');

var_dump($res);

return $res;

}

---

报错信息

array(2) { ["errcode"]=> int(41008) ["errmsg"]=> string(47) "missing code, hints: [ req_id: TPKnBa0038s113 ]" }

---

找了好几天了，也没找到原因。

求帮忙，真的。