PHP Switcher Script; configure following this great post: https://getgrav.org/blog/mac-os-x-apache-setup-multiple-php-versions

php_version

#!/bin/bash

if [ $# -ne 1 ]; then
	echo "Usage: php_version [phpversion]"
	exit 1
fi

currentversion="`php -r \"echo str_replace('.', '', substr(phpversion(), 0, 3));\"`"
newversion="$1"

shortOld="`php -r \"echo substr(phpversion(), 0, 1);\"`"
shortNew="`php -r \"echo substr('$1', 0, 1);\"`"

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

if [ $? -eq 0 ]; then
	echo "PHP version $newversion found"

	echo "Unlinking old binaries..."
	brew unlink php$currentversion 2> /dev/null > /dev/null

	echo "Linking new binaries..."
	brew link php$newversion

	echo "Linking new modphp addon..."
	sudo ln -sf `brew list php$newversion | grep libphp` /usr/local/lib/libphp${shortNew}.so

	echo "Fixing LoadModule..."
	apacheConf=`httpd -V | grep -i server_config_file | cut -d '"' -f 2`
	sudo sed -i -e "/LoadModule php${shortOld}_module/s/^#*/#/" $apacheConf
	sudo sed -i -e "/LoadModule php${shortNew}_module/s/^#//" $apacheConf

	echo "Updating version file..."

	pgrep -f /usr/sbin/httpd 2> /dev/null > /dev/null
	if [ $? -eq 0 ]; then
		echo "Restarting system Apache..."
		sudo pkill -9 -f /usr/sbin/httpd
		sudo /usr/sbin/apachectl -k restart > /dev/null 2>&1
	fi
	pgrep -f /usr/local/Cellar/*/httpd 2> /dev/null > /dev/null
	if [ $? -eq 0 ]; then
		echo "Restarting homebrew Apache..."
		sudo pkill -9 -f /usr/local/Cellar/*/httpd
		sudo /usr/local/bin/apachectl -k restart > /dev/null 2>&1
	fi

	echo "Done."
else
	echo "PHP version $newversion was not found."
	exit 1
fi