How to install and use PHP Composer on Debian

php composer is a package management tool that eliminates the hassle of manually maintaining your application's PHP packages. All required packages can be easily installed using composer. This article will introduce how to install and configure PHP Composer on Debian systems.

1. Conditions

shell uses sudo permissions to access the running debian system.

PHP version 5.3 or higher must be installed and configured.

2. Install Composer on Debian

You can download the composer script from the getcomposer.org website by running the following command. It will create a composer.phar file in the current directory.

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

Copy the composer.phar file in the bin directory so that it can be used anywhere in the system. Also, set execution permissions on the file. Change the file name from composer.phar to composer for ease of use.

$ mv composer.phar /usr/local/bin/composer $ chmod +x /usr/local/bin/composer

Enter composer at the command prompt. This will give you details of the Composer version and the options available in the Composer command.

$ composer ______ / ____/___ ____ ___ ____ ____ ________ _____ / / / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/ / /___/ /_/ / / / / / / /_/ / /_/ (__ ) __/ / \____/\____/_/ /_/ /_/ .___/\____/____/\___/_/ /_/ Composer version 1.6.3 2018-01-31 16:28:17 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

3. Upgrade php composer

composer can upgrade itself without re-downloading. Just run the following command from terminal to upgrade compose on debian.

$ sudo composer self-update

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