Change PHP Version On Ubuntu Using Terminal

Install PHP Version

Step 1.

sudo apt install software-properties-common ca-certificates lsb-release apt-transport-https

Step 2

LC_ALL=C.UTF-8 sudo add-apt-repository ppa:ondrej/php

Step 3

sudo apt update

Step 4

sudo apt install php8.0
sudo apt install php8.0-mysql php8.0-mbstring php8.0-xml php8.0-curl php8.0-gd

Step 5 (Switch the version)

sudo update-alternatives --config php

After this command you have to choose desiger version of the php.