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

Learning key advanced string handling differences

String functions in general have been tightened and normalized in PHP 8. You will find that usage is more heavily restricted in PHP 8, which ultimately forces you to produce better code. We can say that the nature and order of string function arguments is much more uniform in PHP 8, which is why we say that the PHP core team has normalized usage.

These improvements are especially evident when dealing with numeric strings. Other changes in PHP 8 string handling involve minor changes to arguments. In this section, we introduce you to the key changes in how PHP 8 handles strings.

It's important to understand not only the handling improvements introduced in PHP 8 but also to understand the deficiencies in string handling prior to PHP 8.

Let's first have a look at an aspect of PHP 8 string handling in functions that search for embedded strings.

Handling changes to the needle argument

A number of PHP string functions...