sudo apt install php8.1
sudo apt install php8.0
sudo apt install php7.4
sudo apt install php7.3
[If you use virtualmin then check PHP option to select your desired version]
Enable ondrej/php repository
LC_ALL=C.UTF-8 add-apt-repository -y ppa:ondrej/php && apt-get update
Install additional PHP packagesapt-get install php*-{cgi,cli,fpm,pdo,gd,mbstring,mysqlnd,opcache,xml,zip}
Note: php* should be replaced with a specific PHP version, i.e. php7.4, unless you really need to install all available additional PHP versions.
Configuring the second PHP Version in Virtualmin
The following PHP execution modes are available : fpm The following PHP-FPM versions are available : 8.0.13 (php-fpm) 7.4.30 (php74-php-fpm) 8.2.0 (php82-php-fpm)
You can configure which one is the default PHP version used on new Virtual Servers. The default is to use the newest available. You can change that default in System Settings → Server Templates → Default → PHP Options page.
Configuring Individual Virtual Servers
You can configure the PHP version being used for a specific Virtual Server by selecting Server Configuration → PHP Options.
scp file_name.zip username@server_ip/server_address:/directory_path