"The PHP Anthology: 101 Essential Tips, Tricks & Hacks"
by Davey Shafik, Matthew Weier O'Phinney, Ligaya Turmelle, Harry Fuecks and Ben Balbo
Link: http://www.amazon.co.uk/PHP-Anthology-Essential-Tricks-Hacks/dp/0975841998/
Reading history and reviews
Finished at some unspecified time in the past