The PHPClasses.org website has posted their review of a Packt Publishing book covering PDO - "Learning PHP Data Objects" (by Dennis Poppel).

In Learning PHP Data Objects, the author, Dennis Popel, examines this new 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. It also provides essential insight into the inner workings of database interaction with PHP.

The review talks about the contents of the book, what PDO is/how it's used and how well the book hits the mark for its target audience.