Instagram API access token request fail

Question

I seen answers for this in other posts but they are quite outdated and I know IG has updated their api since.

I followed their developer documentation but can not seem to make a request from my localhost.

$fields = array(
   'client_id'     => 'a2xxxxxxxxxxxxxxxxxxxxxxxxxxxxed',
   'client_secret' => '3bxxxxxxxxxxxxxxxxxxxxxxxxxxxxx8f',
   'grant_type'    => 'authorization_code',
   'redirect_uri'  => 'http://localhost:8000/',
   'code'          => 'code'
);

$url = 'https://api.instagram.com/oauth/access_token';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
curl_setopt($ch, CURLOPT_POST,true); 
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
$result = curl_exec($ch);
curl_close($ch); 
print $result; //your token

The above code is how I am making my request but I get the following error.

{"code": 400, "error_type": "OAuthException", "error_message": "Matching code was not found or was already used."}

I have disabled implicit oAuth, the app set up is pretty basic, with all the settings going to my personal site for the time being as the app is in sandbox mode anyway.

Answer 1

redirect_uri应该指向一个公共URL地址，而不是localhost 。

Answer 2

事实证明，每次我想要请求新令牌时，我只需要注销自己的Instagram帐户。