How to Install PHP 8 on Debian 11

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Update the Debian 11 using the following command.

apt update

To Add SURY PHP PPA repository.

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First, download the GPG key.

apt -y install lsb-release apt-transport-https ca-certificates 
wget -O /etc/apt/trusted.gpg.d/php.gpg https://packages.sury.org/php/apt.gpg

Next, add SURY to the repository.

echo "deb https://packages.sury.org/php/ $(lsb_release -sc) main" | tee /etc/apt/sources.list.d/php.list

Output:

root@server:~# echo "deb https://packages.sury.org/php/ $(lsb_release -sc) main" | tee /etc/apt/sources.list.d/php.list

deb https://packages.sury.org/php/ bullseye main

Install PHP 8

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Ensure the added package is up to date.

apt update

If any update is available update the system and reboot.

apt upgrade -y && reboot

To install PHP 8.

apt -y install php8.0

To check the PHP version.

php -v

Output:

root@server:~# php -v
PHP 8.0.9 (cli) (built: Jul 30 2021 13:09:45) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.9, Copyright (c) Zend Technologies with Zend OPcache v8.0.9, 
Copyright (c), by Zend Technologies

Installing PHP Extensions

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Install PHP Extensions by running the following command

apt install php8.0-<extension>

NOTE: Replace the required extensions name like below command

apt install php8.0-apcu

Output:

root@server:~# apt install php8.0-apcu
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  php-apcu-bc php7.4-apcu php7.4-apcu-bc php7.4-common

To list installed php modules/extensions.

php -m

NOTE

• PHP configurations related to Apache is stored in /etc/php/8.0/apache2/php.ini this file.

• If you want to use PHP with Nginx you can follow this guide Click here.

This concludes our topic of installing PHP 8 on the Debian 11 system.