Tecadmin published a tutorial about installing PHP Composer on Ubuntu 20.04.
How to Install PHP Composer on Ubuntu 20.04
The PHP Composer is a package management tool for installing and managing modules for a PHP application. After that you can easily use these modules to your project. It help user to install the required version of php modules under your application. It also maintains all the installed modules details with the version details.
How to Install PHP Composer on Ubuntu 20.04 – TecAdmin