This application uses the Slim framework http://www.slimframework.com/
Install Slim 3 MVC with Composer
Navigate into your project’s root directory and execute the bash command shown below. This command downloads the Slim Framework and its dependencies into your project.
composer require slim/slim "^3.0"
oobdic - Out of the box DIC (Dependency Injection Configuration)
phpdi - PHP-DI dependency injection into the controller