Preface

PHP has evolved over several decades from a simple scripting language for creating HTML pages to a feature-rich language with an extensive ecosystem. Because the vast majority of websites are still powered by PHP, it is one of the cornerstones of the internet.

While still beginner-friendly, it can be used to implement everything from small websites to enterprise applications used worldwide. However, the low entry barriers of PHP sometimes lead to code that is difficult to understand and impossible to maintain.

With this book, we want to introduce you to the world of Clean Code. You will learn a lot about the theory and also, how to apply the knowledge you learned in the real world. You will learn which tools will support you on this journey and which best practices you should use to be able to implement Clean Code successfully in your team.