Switch PHP versions for Laravel Valet

phpv

#!/bin/bash

# Check that homebrew is installed
if [[ "" == "$(command -v brew)" ]]; then
	echo "switch-php requires homebrew to manage installed versions of PHP."
	exit 1
fi

# Check if command was ran as root.
if [[ $(id -u) -eq 0 ]]; then
	echo "This command should not be executed as root or via sudo directly."
	echo "When a service requires root access, you will be prompted for a password as needed."
	exit 1
fi

currentversion="$(php -r "error_reporting(0); echo str_replace('.', '', substr(phpversion(), 0, 3));")"

newversion="$1"

majorOld=${currentversion:0:1}
majorNew=${newversion:0:1}
minorNew=${newversion:1:1}

brew list php$newversion 2> /dev/null > /dev/null

if [ $? -eq 0 ]; then
	# Check if new version is already the current version.
	if [ "${newversion}" == "${currentversion}" ]; then
		echo -n "PHP version $majorNew.$minorNew is already being used. Continue by reloading? (y/n) "
		while true; do
			read -n 1 yn
			case $yn in
				[Yy]* ) echo && break;;
				[Nn]* ) echo && exit 1;;
			esac
		done
	fi

	sudo brew services stop php$currentversion
	brew unlink php$currentversion 2> /dev/null > /dev/null
	brew link php$newversion
	sudo brew services start php$newversion

	echo "Done."
else
	echo "PHP version $majorNew.$minorNew was not found."
	echo "Try \`brew install php${newversion}\` first."
	exit 1
fi