PHP 8.1 introduced the new Fiber class (see the proposed RFC here https://wiki.php.net/rfc/fiber), which allows running coroutines inside your script, i.e. two functions executing simultaneously

Learn how to write Shibboleth IDP logs to a database instead of simple text file

This tutorial describes a TDD approach to refactor code to Strategy pattern. Starting from working code and some test, refactoring steps are applied to obtain cleaner code

I released on GitHub a PHP library for querying and editing data on the Tado Thermostat System. It is integrated in Laravel 5.x for quick setup in this excellent framework.