How to Install PHP Composer on Ubuntu 20.04
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
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
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.
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.
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