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)
1
Section 1: PHP 8 Tips
6
Section 2: PHP 8 Tricks
11
Section 3: PHP 8 Best Practices

Chapter 8: Learning about PHP 8's Deprecated or Removed Functionality

This chapter walks you through functionality that has been deprecated or removed in PHP Hypertext Preprocessor 8 (PHP 8). This information is extremely important for any developer to know. Any code that uses removed functionality must be rewritten before an upgrade to PHP 8. Likewise, any deprecation is a clear signal to you that you must rewrite any code that depends upon such functionality, or risk problems in the future.

After you have read the material in this chapter and followed the example application code, you can detect and rewrite code that has been deprecated. You can also develop workarounds for functionality that has been removed and learn how to refactor code that uses removed functionality involving extensions. Another important skill you will learn from this chapter is how to improve application security by rewriting code depending on removed functions.

Topics covered in this chapter include...