Book Image

Clean Code in PHP

By : Carsten Windler, Alexandre Daubois
5 (1)
Book Image

Clean Code in PHP

5 (1)
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

Gathering metrics in PHP

In this section, we want to have a look at the tools there are in the PHP world to gather code quality metrics. As you will see shortly, these metrics are not just numbers – they will allow you to make educated guesses about how much effort it will take to refactor code. They will also help you to identify the parts of the code that will require the most attention.

Again, we have curated a selection of tools for you:

  • phploc
  • PHP Depend
  • PhpMetrics


As we learned in the previous section, the abbreviation LOC stands for lines of code, so the name already reveals the main purpose of this tool. Being a basic metric, it already tells us quite a few things about a code base. phploc also provides further metrics, such as the CC, so it is worth having a closer look at it.

Installation and usage

The author of this tool, Sebastian Bergmann, is well known for phpunit, the de facto standard for automated tests in the PHP world...