To prepare the way for the upcoming PEAR book from Packt Publishing correctly, Stoyan Stefanov has posted this info about the book and where to find the latest details on it.
Here's the link to publisher's page dedicated to the PHP Programming with PEAR. Guess who wrote the chapter for MDB2? ;)
It's an honour to me to be in the company of the other authors, people who have done a lot for the PEAR community
He also mentions some of the topics that the book will contain, including accessing databases with MDB2, creating and parsing XML documents, and accessing web APIs. The book is coming out in September, so keep on the lookout for it at your local bookseller soon.