Explain advanced Hexagonal Architecture and Ports & Adapters in PHP.

Hexagonal Architecture isolates domain logic from infrastructure through ports and adapters.

Hexagonal Architecture, also called Ports and Adapters, is an architectural style designed to prevent business logic from depending on infrastructure.

Traditional layered architectures often fail because:

Hexagonal Architecture solves this through strict dependency inversion.

Core principles:

Business rules become the center of the system.

Interfaces defining communication contracts.…