In phpBB3 there are four functions you are able to hook into with your custom functions:
phpbb_user_session_handler(); which is called within user::setup after the session and the user object is correctly initialized.
append_sid($url, $params = false, $is_amp = true, $session_id = false); which is called for building urls (appending the session id)
$template->display($handle, $include_once = true); which is called directly before outputting the (not-yet-compiled) template.
exit_handler(); which is called at the very end of phpBB3's execution.
Since i make use of Phpbb3's user system which is closely interconnected with my own custom coding ... I needed a function which deleted a few table entries for that user as well.
The easy and dirty way: Just add the code in the user_delete() function.
Now for a step by step way to create a NEW hook using as little phpbb3 core code changes.
This has been tested with a phpbb3 upgrade ( just merge the files ).
Alter the attached file/function to adapt to your liking for other hooks you want to create !
hook_user_delete.php TO ./includes/hooks/hook_user_delete.php
(This file will be automatically included because of the hook_ prefix.)
// hook-my_custom_user_delete START
if (!empty($phpbb_hook) && $phpbb_hook->call_hook(__FUNCTION__))
// hook-my_custom_user_delete END
Clear the cache ( ACP > index > clear cache )
FTP to ./cache/ and delete the file data_hooks.php ( you can safely delete this file, it will be automatically re-created )
Now the only thing you have to do is look in the hook_user_delete.php file and adapt the function to your liking.
The core function:
* Phpbb3 addon ( hook ) to initiate actions when deleting a user from the ACP using the standard user_delete() function
* @author Ramon Fincken, RamonFincken.com WebsiteFreelancers.nl
global $cache, $config, $db, $user, $auth, $phpbb_hook; // Note: Not sure if you need phpbb_hook, probably not :)
global $phpbb_root_path, $phpEx;
// User to delete: $user_id
$user_id = intval($_POST['u']); // Note: it would be nicer to have this as a param, but this works just fine
if($user_id > 0)
// Note: in my case I want to do some deletes, but feel free to
// * call a function ( make sure phpbb has ACCESS to that function ! )
// * do an insert in a "users_deleted" table, which can be read by your own code/CMS to perform actions later :)
$sql = array();
$sql = 'DELETE FROM some_table WHERE user_id = '.$user_id;
$sql = 'UPDATE LOW_PRIORITY suggestions SET submitter = 0 WHERE submitter = '.$user_id;
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