Bidirectional Signals from the Emitter's Perspective in PHP
13 days ago
- #PHP
- #Event-Driven
- #Observer Pattern
- The traditional observer pattern is observer-centric, focusing on handlers reacting to events.
- The Observer package in PHP shifts the perspective to the emitter, enabling bidirectional communication.
- Signals can be events, plans, inquiries, messages, or commands, each with specific intents.
- Handlers can return counter-signals, allowing the emitter to adapt its flow dynamically.
- Use cases include business workflows, cross-platform input handling, and dynamic configuration.
- The package supports seven signal types, including internal signals for debugging.
- Functions like broadcast, propose, ask, share, and order add semantic clarity to signal dispatching.
- Error handling is integrated, with exceptions propagated from handlers.
- The emitter-driven approach mirrors real-world business interactions, enhancing flexibility.