Book Image

The Art of Modern PHP 8

By : Joseph Edmonds
5 (1)
Book Image

The Art of Modern PHP 8

5 (1)
By: Joseph Edmonds

Overview of this book

PHP has come a long way since its introduction. While the language has evolved with PHP 8, there are still a lot of websites running on a version of PHP that is no longer supported. If you are a PHP developer working with legacy PHP systems and want to discover the tenants of modern PHP, this is the book for you. The Art of Modern PHP 8 walks you through the latest PHP features and language concepts. The book helps you upgrade your knowledge of PHP programming and practices. Starting with object-oriented programming (OOP) in PHP and related language features, you'll work through modern programming techniques such as inheritance, understand how it contrasts with composition, and finally look at more advanced language features. You'll learn about the MVC pattern by developing your own MVC system and advance to understanding what a DI container does by building a toy DI container. The book gives you an overview of Composer and how to use it to create reusable PHP packages. You’ll also find techniques for deploying these packages to package libraries for other developers to explore. By the end of this PHP book, you'll have equipped yourself with modern server-side programming techniques using the latest versions of PHP.
Table of Contents (19 chapters)
Section 1 – PHP 8 OOP
Free Chapter
Chapter 1: Object-Oriented PHP
Section 2 – PHP Types
Chapter 5: Object Types, Interfaces, and Unions
Section 3 – Clean PHP 8 Patterns and Style
Section 4 – PHP 8 Composer Package Management (and PHP 8.1)
Section 5 – Bonus Section - PHP 8.1

Dev and prod dependencies

Composer splits dependencies into two types: dev and prod.

The concept here is quite simple – prod dependencies are those that are needed for your application to run. This might include emailing, logging, framework components, and so on. This is the default when requiring new dependencies.

The other dependency type is dev and is used when we want to bring in tooling that assists with development. There are all kinds of development tools in the PHP ecosystem to power things, such as unit testing, static analysis, coding standards, and more. When we install these kinds of tools, they can often bring in large numbers of their own dependencies as well, creating a very large PHP code base.

Requiring dev dependencies

When we require a new dependency that we want to be a dev dependency, we can simply add a --dev flag to the command; for example:

composer require phpunit/phpunit --dev

This command will update the composer.json file and add...