In this article, we will have explained the necessary steps to install and configure Composer on Ubuntu 18.04 LTS. Before continuing with this tutorial, make sure you are logged in as a user with sudo privileges. All the commands in this tutorial should be run as a non-root user.
Composer is a best dependency manager for PHP. Composer can install, update and pull in all the required PHP packages to your project directory. At the time of installing package, composer will check for dependencies of package and if dependent package are there then it will also install dependencies.
Install Composer on Ubuntu
Step 1. First, before you start installing any package on your Ubuntu server, we always recommend making sure that all system packages are updated.
sudo apt update sudo apt upgrade sudo apt install wget php-cli php-zip unzip
Step 2. Install Composer.
Now that we have php cli installed on our machine, we can download the composer installer with:
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
File composer-setup.php will be downloaded to current working directory. After that, check the data integrity of the script by comparing the script SHA-384 hash on the Composer Signatures page.
HASH="$(wget -q -O - https://composer.github.io/installer.sig)"
Now run the following command to verify that the installation script is not corrupted:
php -r "if (hash_file('SHA384', 'composer-setup.php') === '$HASH') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
You will get following output if the hashes match:
Installer verified
Next, the following command will install Composer in the /usr/local/bin directory:
sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer
It will show you output as below:
All settings correct for using Composer Downloading... Composer (version 1.8.5) successfully installed to: /usr/local/bin/composer Use it: php /usr/local/bin/composer
At last, you can verify the installation by typing:
composer
The command above, will print the Composer’s version, commands and arguments:
______
/ ____/___ ____ ___ ____ ____ ________ _____
/ / / __ \/ __ `__ \/ __ \/ __ \/ ___/ _ \/ ___/
/ /___/ /_/ / / / / / / /_/ / /_/ (__ ) __/ /
\____/\____/_/ /_/ /_/ .___/\____/____/\___/_/
/_/
Composer version 1.8.5 2019-09-23 16:46:47
Usage:
command [options] [arguments]
That’s all you need to do to install Composer on Ubuntu 18.04. I hope you find this quick tip helpful. If you have questions or suggestions, feel free to leave a comment below.