Shell access to a running Ubuntu system. Install PHP 5.3 or higher version. PHP’s package manager, php-cli, must be installed and available in your PATH

Installing PHP Composer on Ubuntu

The Composer’s official team provides a script to install PHP composer on Linux systems. You can download this script using the curl or wget command-line utility. Also, you can download it directly using the PHP script command line.

Upgrade PHP Composer

The PHP composer has the ability to self-upgrade to the latest versions. If the composer is already installed on your system, just type the below command to upgrade the PHP composer to the latest version. In my case, I already have latest version of composer. So receive the following message on terminal:

Working with PHP Composer

You have already installed and configured the composer on your system. The composer will help you to manage modules for your application. For example, to install a new module for your application. Switch to the PHP application. Run the following command to install psr/log module in the application. Composer will automatically create or update composer.json file at application root directory. Now, the application can use the functionality provided by the module. The above command will install the latest version of the module. You can also define the module version you want to install for your application. If the module is already installed, it will automatically downgrade/upgrade the package to the specified version. The module no longer required can be removed with the following command. All the above commands also update composer.json file accordingly.


In this article, we have covered the steps for installing Composer on Ubuntu 22.04. By using Composer, you can easily manage the dependencies of your PHP projects and ensure that all necessary libraries are installed and up to date. Whether you are new to PHP development or an experienced developer, Composer can help you streamline your workflow and improve the quality of your projects.