How to Install PHP 7.4 on Ubuntu 23.10

To install PHP 7.4 on Ubuntu 23.10, you can use the following steps:

Step 1 : Update Package List:

Make sure your package list is up-to-date.

sudo apt update

Step 2 : Add the Repository.

Ondrej's PPA doesn't support non-LTS versions of Ubuntu. Nevertheless, we can proceed with the installation by following the steps below:

sudo add-apt-repository ppa:ondrej/php

Step 3 : Open the file '/etc/apt/sources.list.d/ondrej-ubuntu-php-mantic.sources'

Replace 'mantic' with 'jammy'

Step 4 : Update Package List After Adding the PPA:

sudo apt update

Step 5 : Create a preference file for Ondrej's PHP repository by creating the file '/etc/apt/preferences.d/ondrejphp' and adding the following content:

Package: libgd3
Pin: release n=mantic
Pin-Priority: 900

Step 6 : Install PHP 7.4 Core

Install PHP 7.4 core components:

sudo apt install php7.4 php7.4-cli php7.4-fpm

Step 7 : Install Additional PHP 7.4 Extensions

sudo apt install php7.4-{mysql,common,curl,json,xsl,gd,xml,zip,xsl,soap,bcmath,mbstring,gettext,imagick}

Explanation of Extensions:

- mysql: Enables PHP to interact with MySQL databases.

- common: Includes shared files and resources commonly used by PHP.

- curl: Allows PHP to make HTTP requests and interact with external servers.

- json: Provides functions for working with JSON data.

- xsl: Supports XML document processing with XSL transformations.

- gd: Enables image processing and manipulation.

- xml: Provides functionality for working with XML documents.

- zip: Allows PHP to create and extract zip archives.

- soap: Supports communication with web services using SOAP.

- bcmath: Provides arbitrary precision arithmetic functions.

- mbstring: Supports handling multibyte character encodings.

- gettext: Enables internationalization and localization for message translation.

- imagick: Allows PHP to work with the Imagick image manipulation library for advanced image processing.

Step 8 : Configure PHP (Optional)

Depending on your use case, you might need to configure PHP. The main configuration file is usually located at /etc/php/7.4/cli/php.ini for the command-line interface and /etc/php/7.4/fpm/php.ini for PHP-FPM.

Step 9 : Check Installed PHP Version

php -v

This command should display information about PHP 7.4.

Now, PHP 7.4 should be installed on your Ubuntu 23.10 system.