set-php-version.sh

#!/bin/bash

current=$(php --version | head -1 | cut -f2 -d' ')
current=$(echo "${current%.*}")
php_head=$(brew info php | head -1 | cut -f3 -d' ')

from=$([ "${current}" = "${php_head%.*}" ] && echo "php" || echo "php@${current}")
to=$([ "${1}" = "${php_head%.*}" ] && echo "php" || echo "php@${1}")

echo "Switching from $from to $to"

brew services stop $from; brew unlink $from
brew link --force $to; brew services start $to