The O'Reilly Network has a new article this morning about using the Pear:DB library to make your code portable to any database that library supports. They don't get into too much detail here - just some basic things like connecting and issuing statements to the SQL server.

Also this morning, the WebMonkey has a new PHP article called PHP from the Ground Up. They do a pretty good job here of introducing the PHP subject matter and giving some nice beginner examples. this article is one of the most comprehensive that I've seen in a while. There's tons of info here, and I'd recommend this article as a great place for people to start when looking into working with PHP. Thanks to SpiderMan for the link!

Lastly today, Big Din K.R. has submitted an interesting link more about Building a Better Webserver in the 21st Century than about PHP, but it does bring up some good ideas about PHP vs. Java (mainly multi-threaded vs. a 1:1 ratio).