@scottalanmiller said in How to Install PHP 7.3 on Ubuntu 18.04:

I hate having to do this, but sometimes it has to be done. Here is how to get this middling PHP version onto this old version of Ubuntu.

sudo add-apt-repository ppa:ondrej/php sudo apt update

I'm not sure that is the proper way to do it.
ppa are personal repositories - meaning someone put it together.

I think Ubuntu has offical backports, just like Debian.
In that case it would be better to get a the "newer" php version from the backport repository instead.

UPDATE.
It looks like the ondrej/php repository is actually maintained by a Debian developer, Ondřej Surý. He is one of the package maintainers for the official debian and ubuntu php packages.
https://deb.sury.org/

@Pete-S said in PHP 8 upgrade:

It's a little early I think. PHP is currently only on 8.0.3 and none of the big distros are yet running 8.x branch.

@dbeato said in PHP 8 upgrade:

I haven't tested yet to be honest. We shall see.

I've got clones of the WordPress and Moodle servers that I think I'm going to play with. I though I saw WordPress pushing php 8 recently.