How to install PHP Composer on CentOS 8

In today’s guide, we will discuss how to install PHP Composer on a CentOS 8 Linux computer. Composer is a PHP application package manager designed to provide a standard format for managing PHP software and required library dependencies. This tool is useful when developers want to manage external packages and integrate them into their PHP projects.

Install Composer on CentOS 8

Now that we have covered the basics, we can start actually installing Composer in the CentOS 8 Linux box.

Step 1: Install PHP

First, make sure PHP is installed on your local system.

$ sudo dnf install @php

Confirm that PHP is installed.

$ php -version
PHP 7.2.11 (cli) (built: Oct  9 2018 15:09:36) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies

We have a complete guide on installing PHP on CentOS 8.

Step 2: Download the Composer installer

The next step is to download the Composer installer locally.

sudo dnf -y install wget
wget https://getcomposer.org/installer -O composer-installer.php

Step 2: Install PHP Composer on CentOS 8

After downloading the installer, we can use the following command to install composer on the computer.

sudo php composer-installer.php --filename=composer --install-dir=/usr/local/bin 

The installation will give you output similar to the following.

All settings correct for using Composer
Downloading...

Composer (version 1.9.1) successfully installed to: /usr/local/bin/composer
Use it: php /usr/local/bin/composer

Verify that you have Composer installed on CentOS 8.

$ composer --version
Composer version 1.9.1 2019-11-01 17:20:17

To view the usage page, use:

$ composer
   ______
  / ____/___  ____ ___  ____  ____  ________  _____
 / /   / __ / __ `__ / __ / __ / ___/ _ / ___/
/ /___/ /_/ / / / / / / /_/ / /_/ (__  )  __/ /
____/____/_/ /_/ /_/ .___/____/____/___/_/
                    /_/
Composer version 1.9.1 2019-11-01 17:20:17

Usage:
  command [options] [arguments]

Options:
  -h, --help                     Display this help message
  -q, --quiet                    Do not output any message
  -V, --version                  Display this application version
      --ansi                     Force ANSI output
      --no-ansi                  Disable ANSI output
  -n, --no-interaction           Do not ask any interactive question
      --profile                  Display timing and memory usage information
      --no-plugins               Whether to disable plugins.
  -d, --working-dir=WORKING-DIR  If specified, use the given directory as working directory.
      --no-cache                 Prevent use of the cache
  -v|vv|vvv, --verbose           Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands:
  about                Shows the short information about Composer.
  archive              Creates an archive of this composer package.
  browse               Opens the package's repository URL or homepage in your browser.
  check-platform-reqs  Check that platform requirements are satisfied.
  clear-cache          Clears composer's internal package cache.
  clearcache           Clears composer's internal package cache.
  config               Sets config options.
  create-project       Creates new project from a package into given directory.
  depends              Shows which packages cause the given package to be installed.
  diagnose             Diagnoses the system to identify common errors.
  dump-autoload        Dumps the autoloader.
  dumpautoload         Dumps the autoloader.
  exec                 Executes a vendored binary/script.
  global               Allows running commands in the global composer dir ($COMPOSER_HOME).
  help                 Displays help for a command
  home                 Opens the package's repository URL or homepage in your browser.
  i                    Installs the project dependencies from the composer.lock file if present, or falls back on the composer.json.
  info                 Shows information about packages.
  init                 Creates a basic composer.json file in current directory.
  install              Installs the project dependencies from the composer.lock file if present, or falls back on the composer.json.
  licenses             Shows information about licenses of dependencies.
  list                 Lists commands
  outdated             Shows a list of installed packages that have updates available, including their latest version.
  prohibits            Shows which packages prevent the given package from being installed.
  remove               Removes a package from the require or require-dev.
  require              Adds required packages to your composer.json and installs them.
  run                  Runs the scripts defined in composer.json.
  run-script           Runs the scripts defined in composer.json.
  search               Searches for packages.
  self-update          Updates composer.phar to the latest version.
  selfupdate           Updates composer.phar to the latest version.
  show                 Shows information about packages.
  status               Shows a list of locally modified packages, for packages installed from source.
  suggests             Shows package suggestions.
  u                    Upgrades your dependencies to the latest version according to composer.json, and updates the composer.lock file.
  update               Upgrades your dependencies to the latest version according to composer.json, and updates the composer.lock file.
  upgrade              Upgrades your dependencies to the latest version according to composer.json, and updates the composer.lock file.
  validate             Validates a composer.json and composer.lock.
  why                  Shows which packages cause the given package to be installed.
  why-not              Shows which packages prevent the given package from being installed.

in conclusion

In this article, we have successfully installed Composer on a CentOS 8 Linux computer. Visit the Composer official documentation page to learn more about composer and how to use it in your projects.

View other guides:

How to install phpIPAM on CentOS 8 / RHEL 8 Linux

How to install PHPUnit on CentOS and Fedora

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