Book Image

Test-Driven Development with PHP 8

By : Rainier Sarabia
Book Image

Test-Driven Development with PHP 8

By: Rainier Sarabia

Overview of this book

PHP web developers end up building complex enterprise projects without prior experience in test-driven and behavior-driven development which results in software that’s complex and difficult to maintain. This step-by-step guide helps you manage the complexities of large-scale web applications. It takes you through the processes of working on a project, starting from understanding business requirements and translating them into actual maintainable software, to automated deployments. You’ll learn how to break down business requirements into workable and actionable lists using Jira. Using those organized lists of business requirements, you’ll understand how to implement behavior-driven development (BDD) and test-driven development (TDD) to start writing maintainable PHP code. You’ll explore how to use the automated tests to help you stop introducing regressions to an application each time you release code by using continuous integration. By the end of this book, you’ll have learned how to start a PHP project, break down the requirements, build test scenarios and automated tests, and write more testable and maintainable PHP code. By learning these processes, you’ll be able to develop more maintainable, and reliable enterprise PHP applications.
Table of Contents (17 chapters)
Part 1 – Technical Background and Setup
Part 2 – Implementing Test-Driven Development in a PHP Project
Part 3 – Deployment Automation and Monitoring

Encapsulation in OOP

Encapsulation is a concept where data and methods that access and mutate this data are enclosed in a single unit like a capsule. In PHP, this capsule is the object or class.

The capsule or the object will have the ability to keep its data safe from being read or manipulated, using the concept of visibility.

Visibility in PHP

To be able to control what data or functions the developer can access or use in an object in PHP, the public, protected, and private keywords can be prefixed before the function keyword in the function declaration, or before the property name declaration:

  • private – Only the codes within the object can access this function or property
  • protected – Any object extending this class will be allowed access to the function or property
  • public – Any object user is allowed to access the property or method

What benefits do we developers get from this, then? We’ll get to know this in a bit.