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

Sequential coupling


Sequential coupling is where you create a class that has methods that must be called in a particular order. Method names that start with init, begin, or start may be indicative of this behavior; this may be indicative of an anti-pattern depending on the context. Sometimes, engineers use cars to explain abstract concepts, here I'll do the same.

For example, take the following class:

<?php 
 
class BadCar 
{ 
  private $started = false; 
  private $speed = 0; 
 
  private $topSpeed = 125; 
 
  /** 
   * Starts car. 
   * @return bool 
   */ 
  public function startCar(): bool 
  { 
    $this->started = true; 
 
    return $this->started; 
  } 
 
  /** 
   * Changes speed, increments by 1 if $accelerate is true, else decrease by 1. 
   * @param $accelerate 
   * @return bool 
   * @throws Exception 
   */ 
  public function changeSpeed...