getting null from POST /login/oauth2/token

[gmontilla18]

I am able to get the OAuth information on my local server. When using the actual server, I get 'null' when trying to print the response from /login/oauth2/token. I already added the proper redirect uris. I'm able to get an authorization code and use it for OAuth, just no response.

[gmontilla18]

Added

$post_params = array (
        "client_id"=>$client_id,
        "client_secret"=>$client_secret,
        "code"=>$authorization_code,
        "redirect_uri"=>$redirect_uri
    );

This was added for my curl_setopt_array

CURLOPT_POSTFIELDS=>$post_params,
CURLOPT_HTTPHEADER, array (
        'Accept: application/json'
)