First class book! Goes into so much detail on many various levels. Even goes into topics such as CVS for managing projects when you're working in a team. I know many PHP books where you pick it up and flick through all the bits you know: variables, arrays, scopes, constants, functions, operators. Before you know it you've flicked to the end of the book and still not found anything you don't know. The advanced PHP book isn't like that at all!

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The man who comes back through the Door in the Wall will never be quite the same as the man who went out.