How To Install PHP Composer on CentOS 7

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, PHP Composer is a powerful dependency management tool that has become an essential part of modern PHP development. It allows developers to easily manage and install third-party libraries and packages, making it simpler to build complex applications.

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.


  • 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. It’s always a good practice to keep your system up-to-date. Run the following command to update all installed packages:

yum -y update

This command will fetch the latest package updates from the CentOS repositories and install them on your system.

Step 2. Installing Required Dependencies.

Composer requires several dependencies to function properly. Install them using the following command:

sudo yum install php-cli php-mbstring git curl unzip

Next, check if PHP 7 is installed, run the following command in your terminal:

php -v

If the output shows a version lower than 7, you’ll need to install PHP 7. You can do this by running:

sudo yum install epel-release
sudo yum install php php-cli php-common php-devel php-mbstring php-pdo php-gd php-mysqlnd

Step 3. 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.


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 the 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.

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r00t is a seasoned Linux system administrator with a wealth of experience in the field. Known for his contributions to idroot.us, r00t has authored numerous tutorials and guides, helping users navigate the complexities of Linux systems. His expertise spans across various Linux distributions, including Ubuntu, CentOS, and Debian. r00t's work is characterized by his ability to simplify complex concepts, making Linux more accessible to users of all skill levels. His dedication to the Linux community and his commitment to sharing knowledge makes him a respected figure in the field.
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