What is Composer? How to install composer

Composer is a tool to manage the dependency in PHP. Composer allows declaring the libraries of a project and the composer will install or update them for the user. It is not a package manager but deals with the libraries or packages and install them inside the project directory. The composer is downloaded by the installer in the windows and sets up a path for the environment that can be called from any directory.

The composer can be installed using a command

$curl -sS https://getcomposer.org/installer | 
sudo php -- --install-dir=/usr/local/bin --filename=composer