The presentations, handouts, and solutions for the "Deep Dive with Apache Derby: Perl, PHP, and Python" tutorial I gave at OSCON 2005 are finally online, including a couple of last-minute corrections:
The tutorial (my first solo 3.5 hour teaching session) went reasonably well, although my expectations of what comprises a tutorial apparently differs from the OSCON standard. I had structured the tutorial to be hands-on: after a brief lecture, the attendees were expected to perform exercises like installing Apache Derby, creating a database, setting up a connection through PHP, and the like. I was there to help them through the hurdles.
In contrast, most of the other tutorials were apparently three-hour lectures. I sat in on the end of Larry Rosen's *Law for Geeks*, which appeared to be a great discussion forum -- good format, important subject, great speaker. I followed that up with Monday morning's *Introduction to PostgreSQL*, which, at the one-hour mark, was going painfully slowly... so I slipped out at the break to do a last-minute run through of my own tutorial instead, and fixed a couple of bugs in the presentation materials just in time
My tutorial had about 20 attendees at the start, but I knew it was going to be trouble when less than half of them actually had laptops. Of the laptops, about three had Linux (hurrah -- that matched my tutorial assumptions), a couple had Windows (I had tested everything on Windows, so I knew I could help them through), and one had Mac OSX (completely untested and foreign to me). That ratio was actually rather kind to me; in the rest of the OSCON audience, it seemed about half of the attendees were carrying Mac laptops.
After the break, I was down to about seven hard-core attendees. The attrition didn't surprise or dismay me -- if I was stuck in a hands-on tutorial without being able to get my hands on anything, I would probably leave too. Now, I had asked people to buddy up, but apparently overcoming the fear of strangers was too much to ask (and I admittedly didn't break the ice enough). The other rather frustrating factor was the rather sluggish wireless connectivity and ibm.com's sadistic time-outs playing hell with the 200 MB download required for the DB2 Application Development Client. I ended up copying all of the software onto a USB drive and distributing it manually to the attendees. Despite the frustrations with technology, though, I really felt positive vibes from the audience -- and nobody laid a beating on me in a dark corner after the session
Updated 2005-08-11: Fixed the link to the presentations. Apparently not many people have tried to look at them, or didn't bother to tell me that they were not found 
Updated 2007-11-20: Apparently my host dropped one of the libraries required by the PHP presentation system, so the link to my presentation stopped working. Fixed - thanks to Gordon Agress for bringing this to my attention.
Also it would be great if you could post any links to up to date references on how to make php work with derby. It seems there are few resources on that topic, be it PDO_ODBC or ibm_db2 as drivers for php.
Thanks for reporting the problem; I moved my blog over to a new site and was missing a dependency for some of the older content. It's fixed now.
Due to a change of position and responsibilities, I haven't tried running Derby with PHP for over a year now, I'm afraid, so I don't have any up to date resources on the subject.
Theoretically, though, you should be able to use the IBM DB2 9.5 Data Server Driver for ODBC and CLI (~14.0 MB download from http://www-1.ibm.com/support/docview.wss?rs=71&uid=swg21287889) to compile the PDO_IBM driver (http://php.net/manual/en/ref.pdo-ibm.php) and connect from that to the Derby Network Server.