For all of the readers of Oracle's Alison Holloway mentions just such an update in her latest blog post.

Chris Jones and I have just released an updated version of the Underground PHP and Oracle Manual on OTN. We've numbered it as 1.2.1, and it has some bug fixes, and some extra information on Oracle SQL Developer.

If you have comments or corrections you'd like to submit on this new updated version, you can post a comment here.