I work on multiple projects from PHP 5.2 to PHP 8.3 and everything in between.

Statistics based on packagist(composer)

https://stitcher.io/blog/php-version-stats-january-2024

Statistics based on web servers in the wild

https://w3techs.com/technologies/details/pl-php

https://w3techs.com/technologies/history_details/pl-php