참고 : https://linuxize.com/post/how-to-install-and-use-composer-on-centos-7/ How To Install and Use Composer on CentOS 7 Composer is a dependency manager for PHP. Composer will pull in all the required PHP packages your project depends on and manage them for you. In this tutorial, we will go through the steps of installing and using Composer on a CentOS 7 machine. linuxize.com