coexistence of multiple php versions on debian stretch

switchphpto

#!/bin/bash

# https://deb.sury.org/

VERSION=$1

# unmount all php apache modules
for version in $(ls /etc/php); do 
        sudo a2dismod php$version 
done

# mount the needed apache php module
sudo a2enmod php"$VERSION"

# restart apache
sudo service apache2 restart

# fix system symlinks
sudo update-alternatives --config php