Book Image

Mastering PHP Design Patterns

By : Junade Ali
Book Image

Mastering PHP Design Patterns

By: Junade Ali

Overview of this book

Design patterns are a clever way to solve common architectural issues that arise during software development. With an increase in demand for enhanced programming techniques and the versatile nature of PHP, a deep understanding of PHP design patterns is critical to achieve efficiency while coding. This comprehensive guide will show you how to achieve better organization structure over your code through learning common methodologies to solve architectural problems. You’ll also learn about the new functionalities that PHP 7 has to offer. Starting with a brief introduction to design patterns, you quickly dive deep into the three main architectural patterns: Creational, Behavioral, and Structural popularly known as the Gang of Four patterns. Over the course of the book, you will get a deep understanding of object creation mechanisms, advanced techniques that address issues concerned with linking objects together, and improved methods to access your code. You will also learn about Anti-Patterns and the best methodologies to adopt when building a PHP 7 application. With a concluding chapter on best practices, this book is a complete guide that will equip you to utilize design patterns in PHP 7 to achieve maximum productivity, ensuring an enhanced software development experience.
Table of Contents (14 chapters)
Mastering PHP Design Patterns
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Test, test, and test again


There is no way around this, in order to refactor code, you need a solid set of tests. Refactoring code may well reduce the chances of introducing bugs, but changing the design of code introduces a significant amount of chances to introduce new bugs.

Unintended side-effects will occur during refactoring, where classes are tightly coupled, you may well find making a minor change to one function leading to a negative side-effect in a completely separate class.

Good refactoring effects require good tests. There is simply no way around this.

In addition to this, from a more political standpoint, some companies which have encountered the bad effects of repetitively bad refactoring efforts may become reluctant to refactor code; ensuring there are good tests in place allows the company to ensure a refactoring effort won't break functionality.

In this chapter I will demonstrate refactoring efforts which should be accompanied with testing efforts using unit tests, in the next...