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 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.
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