Lumen VS fig-standards

Lumen is also a micro-framework used for developing PHP-powered web applications with 7.6k stars and 1k forks on GitHub. It is based on the Laravel framework and is specifically designed to build microservices and smaller, lightweight applications. The same team behind Laravel creates it and also shares some of its components. But, It is different from Laravel because it doesn’t offer compatibility with any additional Laravel libraries like Cashier, Passport, Scout, etc.

There's a note right in project page:

Lumen

Lumen is a stripped down version of Laravel for building APIs. This makes it a lightweight framework. I'm currently using Lumen in a project and I want to use this opportunity to share some of the things I've learnt.

Official website: lumen.laravel.com

I think there are micro frameworks like lumen that are far more accessible in the first steps (https://lumen.laravel.com).

see also: https://github.com/laravel/lumen

use lumen. it is exactly what you want. https://lumen.laravel.com/

The namespaces and class names must follow this example.

I would familiarize yourself with the following PHP standards: https://www.php-fig.org

The PHP Standard Recommendation, or PSR for short, from the aforementioned PHP-FIG.

That's what happens if you use a PSR-4 autoloader and not utilise PSR-4 in your project structure 👀 So either use PSR-0 or properly use PSR-4.

PHP really "got it's act together" in my view when packagist and composer (which are PHP's equivalent of npm) became mainstream and with the release of the PSR community standards. We were admittedly a little behind the curve with regards to package managers but with standardised formats and not having to copy and paste zip file libraries anymore, PHP received a new lease of life.