On Dzone.com there's a book review from Ivan Ilijasic covering a recently released title from Packt Publishing, the "PHP Ajax Cookbook" (by Milan Sedliak, Rajesh Jeba R. Anbiah and Roshan Bhattarai). His review gives a "one minute bottom line" about the book and its contents.

I've been in PHP development for more than 10 years and this book is really useful material. I could recommend it to beginners and experienced developers. From my point of view, there are three types of developer books - complete byte-to-byte fat books, introduction books and cookbooks. I want my cookbook to have useful and simple to use recipes. This book fulfilled my expectations.

He mentions some of the topics that the book covers including javascript libraries and frameworks (mostly jQuery) and recipes for things like form validation, dynamic content, pagination and drag and drop functionality. He also points out some coverage of testing and debugging content as well as web service "mashups" and mobile app development.