php.sh

function switch_php {

    NEW_VERSION="php$1"

    EXISTS=`brew info $NEW_VERSION >> /dev/null 2>&1`
    if [ ! $? -eq 0 ]
    then
        echo "PHP Version does not exist"
        return 1
    fi

    echo 'Unlinking other versions'
    brew unlink php53 > /dev/null &&
    brew unlink php54 > /dev/null &&
    brew unlink php55 > /dev/null

    echo 'Linking new version'
    brew link $NEW_VERSION > /dev/null

    echo 'Restarting PHP-FPM'
    service php restart > /dev/null

    echo "Switched to $NEW_VERSION"
}