How to Install PHP 8.0 on Ubuntu 20.04 or 18.04

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let’s update your Ubuntu system packages and install some dependencies as shown.

$ sudo apt update
$ sudo apt upgrade
$ sudo apt install  ca-certificates apt-transport-https software-properties-common

Next, add the Ondrej PPA.

$ sudo add-apt-repository ppa:ondrej/php

When prompted, press ENTER to proceed with adding the repository.

Step 2: Install PHP 8.0 with Apache on Ubuntu

Next, update the system repositories to start using the PPA.

$ sudo apt update

If you are running the Apache web server, install PHP 8.0 with the Apache module as shown.

$ sudo apt install php8.0 libapache2-mod-php8.0

Next, restart the Apache webserver to enable the module.

$ sudo systemctl restart apache2

If you want to use Apache webserver with PHP-FPM, run the command below to install the required packages:

$ sudo apt install php8.0-fpm libapache2-mod-fcgid

Since PHP-FPM is not enabled by default, enable it by invoking the following commands:

$ sudo a2enmod proxy_fcgi setenvif
$ sudo a2enconf php8.0-fpm

Then restart the Apache webserver for the changes to come into effect.

$ sudo systemctl restart apache2

Verify PHP 8 Installation in Ubuntu

To confirm the version of PHP installed, run the command:

$ php -v
Answered on August 29, 2021.
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