Thank you Beat
.
I'm pretty sure too that the SQL plugin will be enough for the PHPBB3 integration. The problem that I might have is that the Joomla and PHPBB tables are within the same server but in different DBs. I've not yet seen the SQL plugin, so I'll have to check if it can handle queries to external DBs. I see no reason why it shouldn't.
An idea, if PHP is necessary, of course this is a temporary solution, would be to run a cron job, let's say every 10 mins or so that checks for newly created subscriptions/expirations directly in the DB. Then the necessary actions will be performed through PHP.
I like a lot what I've seen so far, but the PHP integration is a must
.
Thank you and take care,
Arunas