This hook is called whenever a forum is deleted.

Call time:

Right before the forum will be deleted from the database

Hook input:

The ID of the forum.

Hook output:

Same as input.

Example code:

function phorum_mod_foo_admin_forum_delete ($id) 
{
    // E.g. Notify the external system that the forum has been deleted

    // Return forum ID for other hooks
    return $id;

}