Linuxize published a guide about installing PHP Composer on CentOS 8.

How to Install and Use PHP Composer on CentOS 8

Composer is a dependency manager for PHP (as npm is to Node.js or pip is to Python). Composer will pull in all the required PHP packages your project depends on and manages them for you. It is used in all modern PHP frameworks and platforms such as Laravel, Symfony, Drupal, and Magento 2.

This tutorial goes through the steps of installing Composer on CentOS 8. If you are in a hurry and you don’t want to verify the file integrity, scroll down to the Installing Composer - Quick Way section.

Prerequisites: Logged in as a user with sudo privileges, Have PHP installed on your CentOS 8 system.

How to Install and Use PHP Composer on CentOS 8 | Linuxize