Book Image

Clean Code in PHP

By : Carsten Windler, Alexandre Daubois
Book Image

Clean Code in PHP

By: Carsten Windler, Alexandre Daubois

Overview of this book

PHP is a beginner-friendly language, but also one that is rife with complaints of bad code,;yet no clean code books are specific to PHP. Enter Clean Code in PHP. This book is a one-stop guide to learning the theory and best practices of clean code specific to real-world PHP app development environments. This PHP book is cleanly split to help you navigate through coding practices and theories to understand and adopt the nuances of the clean code paradigm. In addition to covering best practices, tooling for code quality, and PHP design patterns, this book also presents tips and techniques for working on large-scale PHP apps with a team and writing effective documentation for your PHP projects. By the end of this book, you’ll be able to write human-friendly PHP code, which will fuel your PHP career growth and set you apart from the competition.
Table of Contents (18 chapters)
Part 1 – Introducing Clean Code
Part 2 – Maintaining Code Quality

Demystifying polymorphism – interfaces and abstract classes

As far as the separation of responsibilities is concerned, event dispatching is a concept that is already advanced. You can consider that your level in the world of clean code has increased considerably if you know this mechanism, understand it, and have the chance to use it. All this obviously requires a bit of setup. Either you implement this system by yourself or you use an external library. In the second case, there is obviously a whole learning phase to be included. Either way, this is obviously not the only way to improve the separation of your responsibilities. There is a way that is native to PHP to improve this separation, sometimes not used enough, sometimes misunderstood, and often underestimated. We are talking here about polymorphism, or vulgarly: abstract classes and interfaces.

First, why the word polymorphism? Poly comes from the Greek meaning many, and morphism means form/shape. Abstract classes...