Hello, I'm developing in PHP again and want to know if there is preferred or best way to manage multiple PHP versions on Ubuntu. I found this approach:
https://www.tecmint.com/install-different-php-versions-in-ubuntu Thank You!

How to Install Different PHP (5.6, 7.0 and 7.1) in Ubuntu
In this article, we will explain how to install and set different versions of PHP - PHP 5.6, 7.0 and 7.1 in Ubuntu with most required PHP extensions.
How to Install Different PHP (5.6, 7.x and 8.0) Versions in Ubuntu