UPDATE (17 Apr 2014): If you maintain a spaghetti mess of a legacy codebase, my new book based on this talk will give you step-by-step instructions on how to modernize it. You can buy the book today with free updates and a money-back guarantee.

Are you stuck with a legacy PHP application? You should buy my book because it gives you a step-by-step guide to improving you codebase, all while keeping it running the whole time.