If you need to switch your PHP version on MacOs here is how you can do it.

First install brew-php-switcher by running following command:

brew install brew-php-switcher

Next you can check your installed php versions by running this command:

brew search php

If you need to install other versions of php you can read my other article Installing PHP on your Mac.

Finally you can switch your php version by running this command:

brew-php-switcher 8.1

Remember 8.1 is version of php that you want to switch to. change it based on your needs.

Easy right?