How to subscribe to real-time updates for a Facebook page’s wall

I do not know if this can help you but I’ll tell you where I am for real-time update page feed:

(permissions : manage_page,offline_access,read_stream)

1. your application must be linked to the page (then install the application but not required to have a tab ex. create tab https://graph.facebook.com/PAGE_ID/tabs?app_id=APP_ID&method=POST&access_token=PAGE_ACCESS_TOKEN and delete tab
   TAB_ID=PAGE_ID.’/tabs/app_’.APP_ID;
   https://graph.facebook.com/TAB_ID?method=DELETE&access_token=PAGE_ACCESS_TOKEN)

   
   function page_access_token($page_id,$access_token){
   
   $page_token_url="https://graph.facebook.com/" .
   $page_id . "?fields=access_token&" . $access_token;
   $response = file_get_contents($page_token_url);
   $resp_obj = json_decode($response,true);
   $page_access_token = $resp_obj['access_token'];
   return $page_access_token;
   }
   
   function page_tabs_create($page_id,$app_id,$page_access_token){
   
   $page_settings_url = "https://graph.facebook.com/" .
   $page_id . "/tabs?app_id=".$app_id."&method=POST&access_token=" . $page_access_token;
   $response = file_get_contents($page_settings_url);
   $resp_obj = json_decode($response,true);
   return $resp_obj;
   }
   
   function page_tabs_delete($tab_id,$page_access_token){
   
   $page_settings_url = "https://graph.facebook.com/".$tab_id."?method=DELETE&access_token=" . $page_access_token;
   $response = file_get_contents($page_settings_url);
   $resp_obj = json_decode($response,true);
   
   return $resp_obj;
   }
   

2. Subscription: to subscribe must be like a “user” and therefore object = user fields = feed but you have to add new fields because otherwise it receives the comments and likes the wall so you must add “status” in order to receive the articles posted (my problem is to get other content such as links I have managed to add “link” as fields but I am not receiving notifications when a link is posted)

   $param = array (‘access_token’ => $ access_token,
   ‘object’ => ‘user’,
   ‘fields’ => ‘feed, status, link’
   ‘callback_url’ => ‘http:// ******** fbcallback.php’
   ‘verify_token’ =>’***********’,
   ‘include_values’ => ‘true’);

   POST
   https://graph.facebook.com/APP_ID/subscriptions

my English is not very good but I hope it will help you, on my side I’m still looking for really all updates to the wall (links, video …)