SerwerWeb.pl

The following tutorial describes how to install PHP 8 In the Debian system 11

We will complete it in a few minutes with just a few commands.

We start the terminal and update the system:

apt-get update -y

We install the necessary packages with the command:

apt-get install ca-certificates apt-transport-https software-properties-common -y

The next step is to add the repository and download the GPG key

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

wget -qO - https://packages.sury.org/php/apt.gpg | apt-key add -

We are updating packages:

apt-get update -y

We install php 8

apt-get install php8.0

Command php -v it should show us already installed php 8

PHP 8.0.10 (cli) (built: Aug 26 2021 16:06:19) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.10, Copyright (c) Zend Technologies
    with Zend OPcache v8.0.10, Copyright (c), by Zend Technologies

We install the necessary packages for php 8

apt-get install php php-common php-xml php-gd php-mbstring php-tokenizer php-json php-bcmath php-zip -y

Edit the php.ini file

nano /etc/php/8.0/apache2/php.ini

And we're making the following changes:

upload_max_filesize = 32M 
post_max_size = 48M 
memory_limit = 256M 
max_execution_time = 600 
max_input_vars = 3000 
max_input_time = 1000

If we want to upgrade php from 7.4 na 8.0 we follow these steps:

Disabling php 7.4

a2dismod php7.4

Launch php 8.0

a2enmod php8.0

We reload the apache server:

systemctl restart apache2