* I'm using hello.com as my host server for example here.
Preparation
- Read Facebook Official Document - Access Token
- Create a Facebook App on Developer Facebook
- find out App ID and App Secret, you will need them later
- put http://hello.com in Settings->Website->Site URL and Mobile Site URL
- since we will need "manage_pages" permission, select it from the list and submit for approve by Facebook (it takes around a week)
- Create a simple file that prints GET parameters on your server code. Ex, put <?php print_r($_GET);?> as index.php in hello.com
Variables
- App ID
- App Secret
- URL (hello.com)
- code
- access_token
- Facebook Page ID
- message (the content you want to post on the page)
Facebook Graph APIs
- https://www.facebook.com/dialog/oauth?client_id=<App ID>&redirect_uri=http://hello.com/&scope=manage_pages,publish_stream
- you will get "code" from GET parameters in hello.com/index.php
- https://graph.facebook.com/oauth/access_token?client_id=<App ID>&redirect_uri=http://hello.com/&client_secret=<App Secret>&code=<code>
- you will get "access_token" and its expire time
- https://graph.facebook.com/me/accounts?access_token=<access_token>
- this checks the user's account information (his/her Facebook pages)
- https://graph.facebook.com/<Facebook Page ID>/feed?access_token=<access_token>&message=<message>
- the message is posted on the page
