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 the JIT compiler

PHP 8 introduces the long-awaited JIT compiler. This is an important step and has important ramifications for the long-term viability of the PHP language. Although PHP already had the ability to produce and cache bytecode, before the introduction of the JIT compiler, PHP did not have the ability to directly cache machine code.

There have actually been several attempts to add JIT compiler capabilities to PHP, dating back to 2011. The performance boost seen in PHP 7 was a direct result of these early efforts. None of the earlier JIT compiler efforts were proposed as RFCs (Requests for Comments) as they didn't significantly improve performance. The core team now feels that any further performance gains can now only be achieved using JIT. As a side benefit, this opens the possibility of PHP being used as a language for non-web environments. Another benefit is that the JIT compiler opens the possibility to develop PHP extensions in languages other than...