I don't see a reason to compromise. It would take no longer to call extension_loaded on each page request than it will to put the variable in the session. You're right in saying that there's a balance to be struck, but in this particular case I personally see a right way and a wrong way and no compromise needed to do it properly.
I think the "discussion" has moved beyond extension_loaded(), but in that case, yes, personally I would use extension_loaded() directly. Probably in a factory type function which returns the appropriate type of object.
I couldn't care less what your domain name is, you're still advocating a poor choice IMHO.
Practical though. And I'm conscientious as far as business allows. -- Richard Heyes http://www.websupportsolutions.co.uk Knowledge Base and HelpDesk software that can cut the cost of online support ** NOW OFFERING FREE ACCOUNTS TO CHARITIES AND NON-PROFITS ** -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php