Getting information from subscrptionlog table

[Nerrazzuri]

As title, I'm trying to get information(regdate and expirydate) from the subscriptionlog table, any vbulletin API I could actually used?

I tried
echo $vbulletin->GPC['expirydate'];

but nothing shows, am I doing the correct way?

[kh99]

Look at includes/cron/subscriptions.php, it goes through existing subscriptions to see if any have expired or need reminders sent.