Many times I found me in the scenario where I need to use different versions for PHP at the same time for different projects. So here is a tiny guide of how to do this in the easy way.

First install different versions for php using Homebrew (If you haven’t installed Homebrew, just follow the at https://brew.sh/), to install this use:

brew install php@7.1
brew install php@7.2
brew install php@7.3
brew install php@7.4

Now you have to install sphp, you can do this with this script:

curl -L https://gist.githubusercontent.com/rhukster/f4c04f1bf59e0b74e335ee5d186a98e2/raw > /usr/local/bin/sphp

Once it is downloaded in your computer just make it executable:

chmod +x /usr/local/bin/sphp

Cool, now restart your terminal and try to switch between versions with

sphp 7.4

Switching to php@7.4
Switching your shell
Unlinking /usr/local/Cellar/php@5.6/5.6.36… 0 symlinks removed
Unlinking /usr/local/Cellar/php@7.0/7.0.30… 0 symlinks removed
Unlinking /usr/local/Cellar/php@7.1/7.1.32_1… 0 symlinks removed
Unlinking /usr/local/Cellar/php@7.2/7.2.30_1… 0 symlinks removed
Unlinking /usr/local/Cellar/php@7.3/7.3.18… 25 symlinks removed
Unlinking /usr/local/Cellar/php/7.4.6… 0 symlinks removed
Linking /usr/local/Cellar/php/7.4.6… 24 symlinks created
You will need sudo power from now on

Test your php version:

php --version

PHP 7.4.6 (cli) (built: May 14 2020 10:40:11) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.6, Copyright (c), by Zend Technologies