The Zend Developer Zone has posted a review of Packt Publishing's "Learning PHP Data Objects" book writen up by Akash Mehta.

In Learning PHP Data Objects, the author Dennis Popel examines this new [database access] system and explains how to begin using PDO in development as a replacement for typical database drivers. The book is an excellent introduction to the data abstraction layer and also provides essential insight into the inner workings of database interaction with PHP.

Akash talks briefly about the history of PDO and what it can be used for first, then gets into the contents of the book (things like the intro chapters and the quality of the writing). The thing he thinks makes the bok stand out, though, is the examples and sample code that reflect both simple methods and more complex issues PDO developers might run into.