by Luis Atencio
Publisher: Leanpub 2016
Number of pages: 95
In this book, I provide a practical approach to functional programming and show how it compares to other programming paradigms (procedural and object-oriented). This book is filled with examples that showcase functional concepts and techniques, plus using PHP in a ways you've probably never though it could.
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by Vikram Vaswani - Zend Developer Zone
This book caters for the absolute beginners to the intermediate and advanced PHP developers. It takes you through from what is a variable to a nice snippet the author found on backing up a databases or their individual individual tables.
by Davey Shafik - O'Reilly Media
PHP 7 -- the most dramatic update to the language in over a decade -- has arrived. This book provides you with a short guide to the major changes in this new release, including a revamped engine, a bunch of new features, and lots of language cleanup.
by Paul Hudson
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by Alex Cabal - phpbestpractices.org
This text is an attempt to compile a set of instructions for what can be considered best practices for common and confusing issues and tasks in PHP. It's a guide suggesting the best direction to take when facing one of the common low-level tasks.