I was working on a site today and I had an issue because I needed to use PHP 8.0, but trying to switch from 8.1 to 8.0 using brew, I was getting a message:
php@8.0 has been disabled because it is a versioned formula!
A quick google lead me to a post by Jesús Amieiro, “Installing PHP8.0 on macOS“, and I was able to use PHP 8.0.