Getting an access token for a local Facebook script

Question

I will start this question by mentioning that this is my first experience with Facebook's API.

I have a script on my own PC, which is executed with WAMP. It fetches data from Facebook's Graph API, when given manually an access token from Graph API Explorer, getting a specific group's feed.

I would like my script to ask for an access token, and then just use file_get_contents to ask for the json string. I need the access token to have all the permissions available.

What should I do to make the next steps work?

1. Open my PHP file. (already exists)
2. The script will ask for an access token.
3. It will print the content of https://graph.facebook.com/GROUP_ID/feed?=access_token=ACCESS_TOKEN

Answer 1

1. If you are developing a facebook app, you don't need to login to facebook again. (Code snippets for both PHP and Javascript, use that is required to you.)

   [PHP]

   You can get the access_token by performing Http GET request on -

   https://graph.facebook.com/oauth/access_token?client_id=YOUR_APP_ID&client_secret=YOUR_APP_SECRET&grant_type=client_credentials
   

   For more details: login as app

   [Javascript]

   FB.getLoginStatus(function(response) 
   {
     if (response.status === 'connected') 
     {
         var uid = response.authResponse.userID;
         var accessToken = response.authResponse.accessToken;
     } 
     else if (response.status === 'not_authorized') 
     {
        // the user is logged in to Facebook, 
        // but has not authenticated your app
     } 
     else 
     {
        // the user isn't logged in to Facebook.
     }
   });
   

   For more details: getLoginStatus

2. If you are integrating fb with your website, you need to login first and in the response you can obtain the access token.

   Read this: Login Architecture

   [PHP] (Difficulty: High)

   Read this: server-side-login

   [Javascript] (Dfifficulty: Low)

   FB.login(function(response) 
   {
       if (response.authResponse)
       {
           console.log('Welcome!  Fetching your information.... ');
           var access_token = response.authResponse.accessToken;
       } 
       else 
       {
           console.log('User cancelled login or did not fully authorize.');
       }
    }); 
   

   More details: FB.Login