On CodeSnipers.com there's a new book review of one of O'Reilly's PHP-related offerings, "PHP Hacks" by "Jack D. Herrington".
I had borrowed a Perl Hacks book from and friend and really liked it, it was great! It had a lot of practical things as well as some fun things. I expected the same from PHP Hacks and I was not disappointed!
She links to both the table of contents and the sample chapter to give you an idea of the feel of the book. There's two main sections in the review covering both aspects of the book - the Practical Stuff and the Fun Stuff. Of course, no book is perfect, so there is one thing she mentions that wasn't really worked into the book, but you'll need to read the review to find out what.