CODE EXAMPLE FOR SHELL

ubuntu install php 8

# Ubuntu 20.04
# List existing PHP packages
dpkg -l | grep php | tee packages.txt

#Add ondrej/php PPA
sudo add-apt-repository ppa:ondrej/php # Press enter when prompted.
sudo apt-get update

#Install PHP 8.0 with CLI
sudo apt install php8.0-common php8.0-cli

#Additional extensions
sudo apt install php8.0- { bz2,curl,intl,mysql,readline,xml }