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


That brings us to the end of Section 2.

Let's have a quick reminder of what we have covered so far.

First of all, we made sure we understood what types are, and then we had a really good look at the scalar types: the fundamental types that form the basis of all of our data. We learned about the four different ways we can create strings and illustrated some of the pros and cons of each. We had a very brief look at some string functions, though I encourage you to really go back to the docs and see how many there are. We looked at ints and floats, and explained how floats can catch you out. And, of course, we touched on bools; there's not much to say about them other than that they are great.

After this exploration of scalars, we moved on to looking at type juggling and comparison. We looked at the difference between equality and identity when comparing things. We confirmed that the rules around type juggling are predictable but often complex and ideally should...