Ray.Di is a dependency injection and aspect-oriented programming (AOP) framework for PHP, inspired by Google Guice. It provides a module-based DI container that supports constructor, setter, and property injection via PHP 8 attributes, along with method interception for AOP cross-cutting concerns. The core architecture centers on AbstractModule for defining bindings, a Container for storing resolved dependencies, and an Injector that weaves aspects and manages object lifetimes (prototype/singleton). The framework supports advanced features like provider binding, contextual injection, multibinding (collections), assisted injection, null-object binding, and circular dependency detection. It includes a composition-time provenance log (BindingLog) for debugging binding precedence and produces a bindings.md diagnostics artifact. The codebase is mature and thoroughly tested (100% branch coverage), with extensive contract tests that pin observable semantics.