Simple, granular, standards-compliant DI container implementations.

• Is an implementation of the PSR-11 standard.
• Uses some other standards published separately.
• Includes support for the delegate lookup feature, a.k.a. composite containers, with intuitive override order.
• Easily extensible and adaptable.

• CachingContainer - A simple container that resolves callable service definitions and caches the result, guaranteeing the same instance every time. Cache sold separately.
• ContainerAwareCachingContainer - A container that is aware of another container, perhaps a parent one. Callable definitions will receive the top-most parent container of the chain when resolving. Use it with CompositeContainer to implement the
• AbstractBaseContainer - Common functionality for DI containers that store services as internal data.
• AbstractBaseCachingContainer - Common functionality for DI containers that cache resolved services.