If you need help setting multiple versions of PHP such as PHP 7.1 and PHP 5.6 in Valet please see https://gist.github.com/bgarrant/b9a2f7fb8ff06c9a45086359ded7a95e or below
COMMANDS
Valet switch PHP version with these commands
Install PHP 5.6 and switch Valet to PHP 5.6
valet stop
brew unlink php71
brew install php56
brew install php56-mcrypt
brew link php56
valet start
Then to switch back to PHP 7.1 it is as simple as:
valet stop
brew unlink php56
brew link php71
valet start
Then to switch to PHP 5.6:
valet stop
brew unlink php71
brew link php56
valet start
Create a filed called LocalValetDriver.php
and place in project root since Valet has no native EE support
Adjust paths from public_html
or public
as needed