Working with facebook webhook, how to set up?

Question

Facebook

With a new comment, you need to get information about the comment. Does anyone have any examples? Please link to office. do not post documentation.

Answer 1

1. We open the page https://developers.facebook.com/apps/ and create or use an existing application.
   
2. In the callback page code, we process the GET parameters hub.mode , hub.challenge and hub.verify_token . We check that the value of hub.verify_token matches the value specified when adding the callback address in the Webhooks settings on the Facebook site and if the value is correct, we return the value of hub.challenge ( HTTP200 , text/plain ) so that Facebook can use this address.
   

   if (isset($_GET['hub.verify_token']) && $_GET['hub.verify_token'] == '123') {
     header('Content-Type: text/plain');
     echo $_GET['hub.challenge'];
   }

   
   

Answer 2

The name of the parameters is now different:
[hub_mode] => subscribe
[hub_challenge] => 1698542890 [
hub_verify_token] => 123 ; echo $query['hub_challenge']; die; // otherwise it will return json, which fb will not accept