Last updated on March 16th, 2023 at 08:57 pm
In this tutorial, you will learn how to install PHP 8.0/8.1/8.2/8.x on Debian 11. PHP 8.x is a major update of the PHP language.
It contains many new features and optimizations including named arguments, union types, attributes, constructor property promotion, match expression, nullsafe operator, JIT, and improvements in the type system, error handling, and consistency.
Table of Contents
Install PHP 8.0/8.1/8.2/8.x on Debian 11
The default Debian 11 repositories provide PHP 7.4;
apt-cache policy php
php:
Installed: (none)
Candidate: 2:7.4+76
Version table:
2:7.4+76 500
500 http://deb.debian.org/debian bullseye/main amd64 Packages
Install SURY APT Repository
To install PHP 8.0/8.1/8.2/8.x on Debian 11, you need to install SURY, third party repositories that provides PHP packages as follows;
apt -y install apt-transport-https lsb-release ca-certificates curl wget gnupg2wget -qO- https://packages.sury.org/php/apt.gpg | gpg --dearmor > /etc/apt/trusted.gpg.d/sury-php-8.x.gpgsh -c 'echo "deb https://packages.sury.org/php/ $(lsb_release -sc) main" > /etc/apt/sources.list.d/php.list'Run System Update
Re-synchronize your system packages to the latest versions;
apt update
Install PHP 8.0/8.1/8.2/8.x on Debian 11
PHP 8 is now available for installation;
apt-cache policy phpphp:
Installed: (none)
Candidate: 2:8.2+93+0~20221211.45+debian11~1.gbpdb4dcc
Version table:
2:8.2+93+0~20221211.45+debian11~1.gbpdb4dcc 500
500 https://packages.sury.org/php bullseye/main amd64 Packages
2:7.4+76 500
500 http://deb.debian.org/debian bullseye/main amd64 Packages
You can now install PHP 8.0/8.1/8.2/8.x on Debian 11 as follows;
Install PHP 8.0 on Debian 11
To install PHP 8.0 on Debian 11, run the command below;
apt install php8.0
This command will install PHP 8.0 along with other required package dependencies.
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: apache2 apache2-bin apache2-data apache2-utils libapache2-mod-php8.0 libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap liblua5.3-0 libsodium23 php-common php8.0-cli php8.0-common php8.0-opcache php8.0-readline ssl-cert Suggested packages: apache2-doc apache2-suexec-pristine | apache2-suexec-custom www-browser php-pear The following NEW packages will be installed: apache2 apache2-bin apache2-data apache2-utils libapache2-mod-php8.0 libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap liblua5.3-0 libsodium23 php-common php8.0 php8.0-cli php8.0-common php8.0-opcache php8.0-readline ssl-cert 0 upgraded, 18 newly installed, 0 to remove and 3 not upgraded. Need to get 6,658 kB of archives. After this operation, 28.5 MB of additional disk space will be used. Do you want to continue? [Y/n] y
Confirming the installed version;
php -vPHP 8.0.28 (cli) (built: Feb 14 2023 18:26:48) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.28, Copyright (c) Zend Technologies
with Zend OPcache v8.0.28, Copyright (c), by Zend Technologies
Install PHP 8.1 on Debian 11
To install PHP 8.1 on Debian 11, run the command below;
apt install php8.1
This command will install PHP 8.1 along with other required package dependencies.
Confirming the installed version;
php -vPHP 8.1.17 (cli) (built: Mar 16 2023 14:37:38) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.1.17, Copyright (c) Zend Technologies
with Zend OPcache v8.1.17, Copyright (c), by Zend Technologies
Install PHP 8.2 on Debian 11
To install PHP 8.2 on Debian 11, run the command below;
apt install php8.2
This command will install PHP 8.2 along with other required package dependencies.
Confirming the installed version;
php -vPHP 8.2.4 (cli) (built: Mar 16 2023 14:37:38) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.2.4, Copyright (c) Zend Technologies
with Zend OPcache v8.2.4, Copyright (c), by Zend Technologies
Installing other PHP 8.0/8.1/8.2/8.x modules;
You can install other PHP 8.x modules using the command;
apt install php8.N-EXTENSION
Where N is the minor version of PHP 8 which can either be 0, 1, 2…
Replace EXTENSION with the specific module/extension. For example, for PHP 8.0 modules;
apt install php8.0-mysql php8.0-xmlAnd that is it.
How to Set Default PHP Version on Debian
You can set the default PHP version using the update-alternatives command.
If you have multiple versions of PHP installed, there could be some situations that might make you choose a default version to use.
You can list the paths of the installed PHP versions by running the command update-alternatives --list php.
update-alternatives --list phpSample output;
/usr/bin/php8.0
/usr/bin/php8.1
/usr/bin/php8.2Thus, to set the default PHP version, you can use the update-alternatives command with the --config option followed by the path of the desired PHP version. For example, to set PHP version 8.1 as the default PHP version, run the command;
update-alternatives --config php /usr/bin/php8.1You can also run the command interactively by omitting the path to PHP;
update-alternatives --config phpThere are 3 choices for the alternative php (providing /usr/bin/php). Selection Path Priority Status ------------------------------------------------------------ * 0 /usr/bin/php8.2 82 auto mode 1 /usr/bin/php8.0 80 manual mode 2 /usr/bin/php8.1 81 manual mode 3 /usr/bin/php8.2 82 manual mode Press <enter> to keep the current choice[*], or type selection number:
To set a specific version of PHP as the default version, simply choose a number and press ENTER.
For example, in the above prompt, you can enter 2 and press ENTER to set PHP 8.1 as the default version;
There are 3 choices for the alternative php (providing /usr/bin/php). Selection Path Priority Status ------------------------------------------------------------ * 0 /usr/bin/php8.2 82 auto mode 1 /usr/bin/php8.0 80 manual mode 2 /usr/bin/php8.1 81 manual mode 3 /usr/bin/php8.2 82 manual mode Press <enter> to keep the current choice[*], or type selection number: 2 update-alternatives: using /usr/bin/php8.1 to provide /usr/bin/php (php) in manual mode
Confirm the version;
PHP 8.1.17 (cli) (built: Mar 16 2023 14:37:38) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.1.17, Copyright (c) Zend Technologies
with Zend OPcache v8.1.17, Copyright (c), by Zend TechnologiesThat is all on how to install PHP 8.0/8.1/8.2/8.x on Debian 11.
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