The Underground PHP and Oracle manual
Chris Jones just announced the publication of the PHP and Oracle Manual (PDF) and from a high speed eyeballing, it’s good – basically tells you everything you need to know to be able to do useful stuff with PHP + Oracle but with little assumed knowledge.
In fact it seems to be geared to the typical LAMP developer – for example there’s a section on “Installing Oracle XE on Debian, Ubuntu and Kubuntu” plus sections on “Limiting Rows and Creating Paged Datasets” and “Auto-Increment Columns” show an awareness that readers will probably have MySQL experience.
Perhaps one addendum (I didn’t find reference to it) would be pointing readers at SQL Developer, which is a fairly new, free offering from Oracle as a desktop based development tool – the Underground manual focuses on a web based interface to Oracle – something logically equivalent to phpMyAdmin and a good starting point I guess but if you have to do real work, SQL Developer is probably a better choice.
Anyway, given that Oracle XE is free (as in free for developers to mess around with it) and this guide, pretty much all you need if you want to learn your way around Oracle.