Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Embodiment of a real-world app

A book like this was long awaited. There is no better way to learn than the method this book enunciates - the construction of each module that makes up a web site is clearly described through each of its chapters. It was also refreshing to see that the application that was implemented in the book is available online - forums,newsgroups, news feeds, message boards, complete shopping cart with check out features, and a very neatly written final chapter that takes a look at what could have been done better - refactoring, templating etc along with a fullish perspective of the whole application.Kudos to the author team, for a job well done. I recommend this book to any programmer that wants to learn PHP, use PHP better (thru an OO approach) and build an effective and useful web site.