From the DICs I have looked at so far I like Dice the most. Especially it's documentation is one that you understand what to use it for and how. This feeling I didn't have with most of the other documentations I have read from other DICs.

#^Dice - PHP Dependency Injection Container

Dice is a minimal, lightning fast PHP Dependency Injection Container with a focus on being easy to use.

Dice allows developers to move object creation logic out of their application logic. This has many advantages when it comes to OOP theory, but also makes the developers life easier. It tries to be as minimal and unobtrusive as possible. Everything is done to minimise and simplify application code, making the application developers job easier and making the learning curve as shallow as possible.

Maybe should take a look at the PSR-11 wrapper for Dice.