slick/di is a php 5.5+ library that you’ll have in your project development environment. Before you begin, ensure that you have PHP 5.5 or higher installed.

You can install slick/di with all its dependencies through Composer. Follow instructions on the composer website if you don’t have it installed yet.

You can use this Composer command to install slick/di:

$ composer require slick/di

If you prefer editing your composer.json file manually, add slick/di to your require-dev section like this:

    "require": {
        "slick/di": "^1.0"

Then install slick/di with the composer install command:

$ composer install