Step-by-Step Guide: Updating PHP from Version 8.1 to 8.3 on Linux (ubuntu)

Simply follow the commands below to effortlessly upgrade PHP from version 8.1 to 8.3 on your Ubuntu operating system:

sudo apt install software-properties-common

sudo add-apt-repository ppa:ondrej/php

in my case Nginx

sudo apt-get update

Install PHP 8.3

sudo apt install php8.3

Install PHP 8.3 Package

sudo apt install php8.3-common php8.3-mysql php8.3-xml php8.3-xmlrpc php8.3-curl php8.3-gd php8.3-imagick php8.3-cli php8.3-dev php8.3-imap php8.3-mbstring php8.3-opcache php8.3-soap php8.3-zip php8.3-intl -y
php -v

Install PHP 8.3 FPM for Nginx

For the Nginx web server, you need to install the FPM service, you can install it using the following command:

apt install php8.3-fpm

Once the installation has been completed, you can confirm that the PHP-FPM service has been installed correctly with the following command:

systemctl status php8.3-fpm