On phpPatterns.com today, there's a book review of the php|architect's Guide to PHP Design Patters (by Jason Sweat).

From the outset, the php|architect’s Guide to PHP Design Patterns takes no prisoners in regard to pre-requisite knowledge; to get something out of this book you will need to have a fair degree of experience with PHP and a grasp of OOP. It targets PHP versions 4 and 5 and does so meticulously, typically providing separate code examples for each version and emphasizing specific differences in the way objects are handled between versions as well as showing how to get the most out of features new to PHP5.

Perhaps more important, in these days where everyone’s packing a new PHP framework, php|architect’s Guide to PHP Design Patterns will give you a point of reference for identifying the good from the bad and the ugly.

I definitely agree with his comments on the book - it's a great patterns resource that was sorely needed in the community, and Jason did a marvelous job of bringing each of the patters to a standard level of understanding without pandering to the beginners trying to figure out what patterns even are...