Switch PHP Versions

switchphp.sh

#!/bin/bash

php_new_version=$1


if [ -z "$php_new_version" ]
then
      echo "Please enter which PHP version do you want to switch to."
     exit 1
fi


php_version=$(php -r 'echo PHP_MAJOR_VERSION.".".PHP_MINOR_VERSION;')

if [ $php_version == $php_new_version ]
then
        echo "You are already uisng PHP $php_version"
        exit 1
fi

echo "Switching PHP from $php_version to $php_new_version..."
echo ""

echo "Disabling PHP $php_version..."
sudo a2dismod php$php_version

echo "Enabling PHP $php_version..."
sudo a2enmod php$php_new_version
echo "Updating system to use PHP $php_new_version..."
sudo update-alternatives --set php /usr/bin/php$php_new_version

php -v

Make sure you already install the PHP versions you want to switch between.

Usage:

switchphp [version-number]

To switch to PHP 7.4, type

switchphp 7.4