Book Image

PHP 8 Programming Tips, Tricks and Best Practices

By : Doug Bierer
Book Image

PHP 8 Programming Tips, Tricks and Best Practices

By: Doug Bierer

Overview of this book

Thanks to its ease of use, PHP is a highly popular programming language used on over 78% of all web servers connected to the Internet. PHP 8 Programming Tips, Tricks, and Best Practices will help you to get up-to-speed with PHP 8 quickly. The book is intended for any PHP developer who wants to become familiar with the cool new features available in PHP 8, and covers areas where developers might experience backward compatibility issues with their existing code after a PHP 8 update. The book thoroughly explores best practices, and highlights ways in which PHP 8 enforces these practices in a much more rigorous fashion than its earlier versions. You'll start by exploring new PHP 8 features in the area of object-oriented programming (OOP), followed by enhancements at the procedural level. You'll then learn about potential backward compatible breaks and discover best practices for improving performance. The last chapter of the book gives you insights into PHP async, a revolutionary new way of programming, by providing detailed coverage and examples of asynchronous programming using the Swoole extension and Fibers. By the end of this PHP book, you'll not only have mastered the new features, but you'll also know exactly what to watch out for when migrating older PHP applications to PHP 8.
Table of Contents (17 chapters)
Section 1: PHP 8 Tips
Section 2: PHP 8 Tricks
Section 3: PHP 8 Best Practices

Implementing stable sort

When designing the logic for array sorting, the original PHP developers sacrificed stability for speed. At the time, this was considered a reasonable sacrifice. However, if complex objects are involved in the sorting process, a stable sort is needed.

In this section, we discuss what stable sort is, and why it's important. If you can ensure that data is stably sorted, your application code will produce more accurate output, which results in greater customer satisfaction. Before we get into the details of how PHP 8 enables stable sorting, we first need to define what a stable sort is.

Understanding stable sorts

When the values of properties used for the purposes of a sort are equal, in a stable sort the original order of elements is guaranteed. Such a result is closer to user expectations. Let's have a look at a simple dataset and determine what would comprise a stable sort. For the sake of illustration, let's assume our dataset includes...