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

Dealing with deprecated or removed security-related functionality

Any changes to functionality that affect security are extremely important to note. Ignoring these changes can very easily lead not only to breaks in your code but can also open your websites to potential attackers. In this section, we cover a variety of security-related changes in functionality present in PHP 8. Let's start the discussion by examining filters.

Examining PHP 8 stream-filter changes

PHP input/output (I/O) operations depend upon a subsystem known as streams. One of the interesting aspects of this architecture is the ability to append a stream filter to any given stream. The filters you can append can be either custom-defined stream filters, registered using stream_filter_register(), or predefined filters included with your PHP installation.

An important change of which you need to be aware is that in PHP 8, all mcrypt.* and mdecrypt.* filters have been removed, as well as the string.strip_tags...