Are you currently learning how program in PHP? If so, what learning materials are you using (books, tutorials, friends, etc.?) Or, if you're already a PHP master, what advice would you have for someone who is just starting to pick up the language?
PHP Crash Course: Learn PHP in 14 easy lectures by Robin Nixon
This book is designed for beginners to the language and programming in general. I would say that it's an 'OK' book... I bought the Kindle version and it's full of formatting and coding errors. Other than that, the concepts are well explained and easy to follow along.
I have a subscription to lynda.com and I'm using their beginner PHP course to supplement the Crash Course book. The instructor is great and it's a video tutorial, which makes following along with coding examples really easy. The only problem is that the course is from 2007. Still, I can always consult the language manual at php.net to check whether specific information from the course is still relevant.