I think before talking about porting to IB6 there should be a
thread-save driver for AOLServer 3.x available. Of course, strong
interest in the port could speed up development of such a driver,
but as a fact, it doesn''t exist yet (at least not publicly). I don't
know if I should choose AOLserver or Apache/PHP4 to use with
Interbase for a (hopefully) high-traffic site. A good part of the
decision will depend on the quality of the Interbase driver. PHP4
doesn't look bad, but it could be better. But there isn't broad
interest in IB from PHP users/developers and vice versa. PHP
folks seem to be sold on MySQL, which is a sad thing.