How To Install PHP (8.1, 7.4 or 5.6) on Ubuntu 22.04

# update the Apt cache and upgrade the current packages of system
sudo apt update && sudo apt upgrade


# nstall few dependencies required
sudo apt install software-properties-common ca-certificates lsb-release apt-transport-https

# Add the Ondrej PPA
LC_ALL=C.UTF-8 add-apt-repository ppa:ondrej/php

# update the Apt package manager cache
sudo apt update

# Install PHP 8.1
sudo apt install php8.1

# Install the various PHP extensions required for (WordPress/Laravel)
sudo apt install php8.1-curl php8.1-gd php8.1-imagick php8.1-mbstring php8.1-xml php8.1-xmlrpc php8.1-soap php8.1-intl php8.1-zip php8.1-bcmath

# Install PHP 7.4
sudo apt install php7.4

# Install PHP 7.3
sudo apt install php7.3

# Install PHP 7.2
sudo apt install php7.2


# Check Active PHP Version
php -v

# Switch Default PHP Version for CLI
sudo update-alternatives --config php

# Uninstalling PHP
sudo apt remove php5.6
sudo apt remove php5.6-*