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@labbots labbots/SwitchPhp.sh
Last active Jun 15, 2018

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Bash script to switch between available PHP versions in Ubuntu. (Tested in Ubuntu 16.04)
#!/bin/bash
# Check if ran with root permissions
if [ `id -u` -ne 0 ]; then
printf "The script must be run as root! (you can use sudo)\n"
exit 1
fi
function arrayContains {
local e match="$1"
shift
for e; do [[ "$e" == "$match" ]] && return 0; done
return 1
}
function get_available_php_version {
local BASEDIR="/etc/php/"
local php_versions_in_etc=$(find $BASEDIR -mindepth 1 -maxdepth 1 -type d -printf '%f ')
local i=0;
local available_versions=()
oldIFS="$IFS"
for php_version in $php_versions_in_etc
do
if $(dpkg --get-selections | grep -v deinstall | grep -q -P "(^php${php_version})"); then
available_versions[$i]=$php_version
((i++))
fi
done
local rtn="$(declare -p available_versions)"
local IFS=$'\v';
echo "${rtn#*=}"
IFS="$oldIFS"
}
function print_available_php_verions {
eval declare -a avaiable_php_versions="$(get_available_php_version)"
printf "Basic Usage: bash %s <php-version>\n" "$(basename $0)"
current_php=$(php --version | head -n 1 | cut -d " " -f 2 | cut -c-3)
printf "Current active PHP version is %s\n" "$current_php"
printf "Avaliable PHP Versions are:\n"
for ix in ${!avaiable_php_versions[*]}
do
printf " %s\n" "${avaiable_php_versions[$ix]}"
done
}
function main {
if [ -z "$1" ]
then
print_available_php_verions
exit 0
fi
local VERSION=$1
eval declare -a avaiable_php_versions="$(get_available_php_version)"
if $(arrayContains "${VERSION}" "${avaiable_php_versions[@]}") ; then
printf "PHP %s is avaliable in the system.\n" "${VERSION}"
current_php=$(php --version | head -n 1 | cut -d " " -f 2 | cut -c-3)
printf "Switching PHP from %s to %s\n" "$current_php" "$VERSION"
sudo a2dismod php$current_php
sudo a2enmod php$VERSION
sudo service apache2 restart
sudo update-alternatives --set php /usr/bin/php$VERSION
else
print_available_php_verions
fi
}
main $1
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