How to Install PHP Composer on Ubuntu 20.04

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Composer is basically a dependency manager for the programming language, PHP. It functions as some sort of project manager that helps the programmer manage dependencies that will be used on a project to project basis.

Install Dependencies

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apt update

apt install wget php-cli php-zip unzip

Output:

root@vps:~# apt install wget php-cli php-zip unzip Reading package lists... Done Building dependency tree Reading state information... Done wget is already the newest version (1.20.3-1ubuntu1). wget set to manually installed. The following additional packages will be installed: libzip5 php-common php7.4-cli php7.4-common php7.4-json php7.4-opcache php7.4-readline php7.4-zip

Download and Install Composer

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Make sure you’re in your home directory and download the Composer installer using wget.

cd ~

wget -O composer-setup.php https://getcomposer.org/installer

Output:

root@vps:~# wget -O composer-setup.php https://getcomposer.org/installer --2020-10-21 20:38:37-- https://getcomposer.org/installer Resolving getcomposer.org (getcomposer.org)... 142.44.245.229, 2607:5300:201:2100::4:d105 Connecting to getcomposer.org (getcomposer.org)|142.44.245.229|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 276190 (270K) [application/octet-stream] Saving to: ‘composer-setup.php’

composer-setup.php 100%[===================>] 269.72K 1.28MB/s in 0.2s

2020-10-21 20:38:37 (1.28 MB/s) - ‘composer-setup.php’ saved [276190/276190]

Now, download and install Composer, under /usr/local/bin by running the following command.

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

Output

root@vps:~# php composer-setup.php --install-dir=/usr/local/bin --filename=composer All settings correct for using Composer Downloading...

Composer (version 1.10.15) successfully installed to: /usr/local/bin/composer Use it: php /usr/local/bin/composer

To test your installation, run the following command

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composer

Output:

root@crowncloud:~# composer Do not run Composer as root/super user! See https://getcomposer.org/root for details

/ __/_ __ _ ____ / / / \/ `\/ \/ \/ / _ \/ / / // // / / / / / / // / // ( ) / / __/__// // // ./__/__/\// // Composer version 1.10.15 2020-10-13 15:59:09

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

This verifies that Composer was successfully installed on your system.