Facebook Graph-api, premissions for Shares count (Invalid OAuth access token signature)

Question

I am far from the programming and PHP, but got the challenge to get the Fb share count for the website :)

I'm trying to get the proper App Access Token and send the request to Fb according to this article .

The request should be like this:

https://graph.facebook.com/?ids=http://www.myurl.com/my-page&access_token=myappid|myappsecret

And I getting this error.

   {
       "error": {
          "message": "Invalid OAuth access token signature.",
          "type": "OAuthException",
          "code": 190,
          "fbtrace_id": "FfZKAkCyad1"
       }
    }

I am going to use it in PHP roughly like this:

function facebook_count($url)
{
$results = @file_get_contents('http://graph.facebook.com/' . $url .'&access_token=myappid|myappsecret');
if ($results) {
$like_array = json_decode($results, true);
if (!empty($like_array['shares']))
return ($like_array['shares']);
}

return 0;
}

My guess, I checked wrong Permissions (scopes) for my App token. Did not found an answer in FB dev page. Checked this for now:

user_likes, read_insights, read_audience_network_insights, public_profile

What Scope do I need to check, if I need only the shares count by the link?
Or in what else could be the problem?

Answer 1

You need to use an App Access Token ... So the actual permissions (referring to User Access Tokens !) are irrelevant.

So, hopefully you are replacing myappid|myappsecret with your actual App Id and App Secret. If ynot, there's your error. Furthermore, I think in the file_get_contents call then ?id= part in the URL is missing.