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

Working with removed functionality in PHP 8 extensions

In this section, we will have a look at removed functionality in PHP 8 extensions. This information is extremely important in order to avoid writing code that does not work in PHP 8. Further, an awareness of removed functionality helps you prepare existing code for a PHP 8 migration.

The following table summarizes removed functionality in extensions:

Table 8.2 – Functions removed from PHP 8 extensions

The preceding table provides a useful list of removed functions. Use this list to check against your existing code prior to a PHP 8 migration.

Let's now have a look at a potentially serious change to the mbstring extension.

Discovering mbstring extension changes

The mbstring extension has had two major changes that have massive potential for a backward-compatible code break. The first change is that a significant number of convenience aliases have been removed. The second major change...