Matt: I'm sure not *every* PHP app that uses MySQL is broken, but so far it seems that most are. SMF (forum software), for example, is only slightly broken - only a couple of queries were malformed, and a patch was available something like 2 hours after the problem was noticed. phpBB, on the other hand, breaks horribly every time PHP or MySQL get upgraded, and this time was no exception.
In the case of WP, much of it still works to a fair degree. I'll do what I can over the weekend.
