On his blog Sebastian Bergmann has announced "The PHP QA Book" that will be written by himself and Stefan Priebsch looking at quality assurance in PHP projects.

The idea for the book is that Stefan Priebsch and I write the introductory as well as the concluding chapters while other authors contribute case studies for the middle part of the book. [...] Our motivation to write this book is simple: there is no such book on the market and from our experience a book such as this is needed.

The book will be printed in both English and German and will be release in the later part of this year (2009).