Book Image

PHP 7 Programming Cookbook

By : Doug Bierer
Book Image

PHP 7 Programming Cookbook

By: Doug Bierer

Overview of this book

PHP 7 comes with a myriad of new features and great tools to optimize your code and make your code perform faster than in previous versions. Most importantly, it allows you to maintain high traffic on your websites with low-cost hardware and servers through a multithreading web server. This book demonstrates intermediate to advanced PHP techniques with a focus on PHP 7. Each recipe is designed to solve practical, real-world problems faced by PHP developers like yourself every day. We also cover new ways of writing PHP code made possible only in version 7. In addition, we discuss backward-compatibility breaks and give you plenty of guidance on when and where PHP 5 code needs to be changed to produce the correct results when running under PHP 7. This book also incorporates the latest PHP 7.x features. By the end of the book, you will be equipped with the tools and skills required to deliver efficient applications for your websites and enterprises.
Table of Contents (22 chapters)
PHP 7 Programming Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Developing classes


The traditional development approach is to place the class into its own file. Typically, classes contain logic that implements a single purpose. Classes are further broken down into self-contained functions which are referred to as methods. Variables defined inside classes are referred to as properties. It is recommended to develop a test class at the same time, a topic discussed in more detail in Chapter 13, Best Practices, Testing, and Debugging.

How to do it...

  1. Create a file to contain the class definition. For the purposes of autoloading it is recommended that the filename match the classname. At the top of the file, before the keyword class, add a DocBlock. You can then define properties and methods. In this example, we define a class Test. It has a property $test, and a method getTest():

    <?php
    declare(strict_types=1);
    /**
     * This is a demonstration class.
     *
     * The purpose of this class is to get and set 
     * a protected property $test
     *
     */
    class Test
    {
    
      protected...