HOW TO INSTALL COMPOSER ON LINUX

Composer is a command-line package manager for the PHP programming language. Composer helps in managing dependencies and libraries that are required when developing PHP applications.

Soif you’re developing a PHP app and you need some third-partylibraries you can declare them in the “_ composer.json _”file; while composer will go ahead to install the libraries andupdate them for you as necessary.

Thesepackages are installed in a directory like “vendor within yourproject directory

Composer will manage the libraries of different PHP projects individually; because definitely different project need different packages or even none at all.

In this post, I would show you how you can install composer on Ubuntu Linux. Similar steps can be followed with other distros of Linux.

Requirements

Foryou to be able to run/use composer you must have PHP(version5.3.2 and above) installed in your system.

Checkhere on how to installPHP on your system.

Step1 – Update systems software repositories:

Usethe command:

sudo apt-get update

Step2 – Then go to the home directory:

cd ~

Step3 – Download composer:

curl -sS https://getcomposer.org/installer -o composer-setup.php

Step4 – Verify the installer

Nowverify that the installer you just downloaded is the same with thelatest version using the SHA-384 hash.

 php -r "if (hash_file('sha384', 'composer-setup.php') === 'a5c698ffe4b8e849a443b120cd5ba38043260d5c4023dbf93e1558871f1f07f58274fc6f4c93bcfd858c6bd0775cd8d1') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

Ifsuccessful, you should have a “Installerverified”as output.

Step5 – Install composer:

Thereare two ways to install Composer. Locally as part of your project, orglobally as a system wide executable.Except on very important reasons, it is advisable to install itglobally on your system. And thats what we will do here (i.e. In the/usr/local/bin directory);

sudo php composer-setup.php --install-dir=/usr/loacal/bin --finame=composer

Theoutput should look like this;

_ Allsettings correct for using Composer _

_ Downloading… _

Composer(Version 1.8.6) successfully installed to: /usr/local/bin/composer

_ Useit: php /usr/local/bin/composer _

You can type this command to launch composer:

composer

You should see this:

Thereyou have it, composer installed in your system.

Happy Linux’NG!

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