How To Install PHP Composer on CentOS 7

In this tutorial, we will show you how to install and configuration of PHP Composer on your CentOS 7 server. For those of you who didn’t know, Composer is an incredible dependency manager tool used to install and upgrade libraries for dynamic, PHP applications and projects. This software is used to facilitate the installation and update of the project dependencies which also show the appropriate versions required for the project requirements.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple. I will show you the step-by-step installation of PHP Composer on the CentOS 7 server.

Prerequisites

• A server running one of the following operating systems: CentOS 7.
• It’s recommended that you use a fresh OS install to prevent any potential issues.
• SSH access to the server (or just open Terminal if you’re on a desktop).
• A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install PHP Composer on CentOS 7

Step 1. First, let’s start by ensuring your system is up-to-date.

yum -y update

Step 2. Installing Composer on CentOS 7.

Download and install Composer by executing the following command:

curl -sS https://getcomposer.org/installer | php

Sample result:

[root@idroot ~]# curl -sS https://getcomposer.org/installer | php
#!/usr/bin/env php
Some settings on your machine may cause stability issues with Composer.
If you encounter issues, try to change the following:

Your PHP (5.3.3) is quite old, upgrading to PHP 5.3.4 or higher is recommended.
Composer works with 5.3.2+ for most people, but there might be edge case issues.

Downloading...

Composer successfully installed to: /root/composer.phar
Use it: php composer.phar

Once the process completes, you can make the ‘composer.phar’ file executable by running the following command:

chmod +x composer.phar

Now use the following commands to make composer available globally for all users in your system, which can be used for all PHP applications on that system:

mv composer.phar /usr/local/bin/composer

You can also check the version of the composer by running bellow command:

composer -V

The output of the command should be similar to this:

Composer version 1.0-dev (7a9eb02190d334513e99a479510f87eed18cf958) 2015-9-08 10:46:33

Congratulations! You have successfully installed PHP Composer. Thanks for using this tutorial for installing PHP Composer on your CentOS 7 system. For additional help or useful information, we recommend you check the official composer website.