It Was Like That When I Got Here: Steps Toward Modernizing a Legacy Codebase
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.