Content health: prewriting stage
This chapter is not yet finished. To speed up the progress, help us fix it at GitHub.

PHP extensions

PHP consists of extensions. PHP extension is a self containing module that provides some particular functionality, such as sessions or accessing databases.

PHP extensions introduction

Introduction chapter will introduce the categorization of the PHP extensions, where they can be found and how you can install them.

Date and time

PHP date extension provides functions and classes for working with dates and time.


PHP session extension provides functions and classes for persisting data between requests. Learn more about sessions in PHP and session extension.


Access databases with PHP.


Regular expressions in PHP.


Phar (PHP Archive)

Found a typo? Something wrong with this content?

Just fork and edit it.

Content of this work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license. Code snippets in examples are published under the CC0 1.0 Universal (CC0 1.0). Thanks to all contributors.