From a new PHPComplete.com entry: I have just discovered my new best friend. Addison-Wesley's Bruce Peren's Open Source Series is releasing a new book in late October, and I was sent a draft manuscript copy (basically, it's a large version of the book, though not in a finished format). I feel that I am a fairly experienced PHP programmer, and that I am capable at most tasks. However, I am still keenly aware that there is much more that I can learn about PHP. [...] And for the longest time, I was aprehensive about picking up any book simply because I didn't feel like it was going to be worth it.

And just today, in the mail, comes PHP 5 Power Programming (Bruce Perens Open Source) by Andi Gutmans, Stig Bakken, and Derick Rethans. Three individuals who know a LOT more about PHP than I do. Frankly, after looking through this book (rather quickly, mind you), I feel that calling this a book is not accurate. Rather, I see this as me having stolen their brains (If Andi, Stig, or Derick suddenly become less smart, we know why). This book is amazing! It covers everything I would want in a PHP 5. It covers all the new features, PEAR, optimization techniques, and most importantly (for me at least), how to move an existing code base from PHP 4 to PHP 5.

Sounds like a definite pickup for anyone out there looking for a good place to move from PHP 4 to PHP 5...