What Are the Differences Between PSR-0 and PSR-4?

Question

Recently I\'ve read about namespaces and how they are beneficial. I\'m currently creating a project in Laravel and trying to move from class map autoloading to namespacing.

Answer 1

Even when I tried but Composer is a mess. Sadly, it's the only alternative.of the market.
Why is a mess?.
The Composer's autocomplete works fine if you are in control of the code. However, if you are importing a different project, you find yourself with lots of styles and ways to create folders. For example, some projects are /company/src/class.php while others are company/class.php and others are company/src/class/class.php

I created a library that solves it:

https://github.com/EFTEC/AutoLoadOne (it's free, MIT).

It generates an autoinclude by scanning all the classes of a folder, so it works in every case (psr-0 psr-4, classes without namespace, file with multiple classes..

edit: And again, downvoted without any reason. ;-)