I contacted Adobe, was transferred five times and nobody understood my question. Thanks Adobe!
I know there are tons of 3rd party apps out there for doing this, but most of them convert remotely (the best of these is pdfcrowd.com). There are a few that provide local libraries (princexml.com), but they don't support all the features I need (UTF8 for example).
I'm assuming Adobe is the expert in this area (though reconsidering that based on my calls this morning). I want to know if they offer a library/api (preferably with a PHP interface) that I can use to generate PDFs on my own server.
Tue May 29 17:13:44 2012 - FYI, I ended up choosing pdfcrowd. Although it is a remote service, it provides the most consistent and attractive conversions that I found.