Clean Architecture, Hexagonal Architecture & DDD for PHP/Symfony

Overview

This skill provides guidance for implementing Clean Architecture, Hexagonal Architecture (Ports & Adapters), and Domain-Driven Design patterns in PHP 8.3+ applications using Symfony 7.x. It ensures clear separation of concerns, framework-independent business logic, and highly testable code through layered architecture with inward-only dependencies.

When to Use

• Architecting new enterprise PHP applications with Symfony 7.x
• Refactoring legacy PHP code to modern, testable patterns
• Implementing Domain-Driven Design in PHP projects
• Creating maintainable applications with clear separation of concerns
• Building testable business logic independent of frameworks
• Designing modular PHP systems with swappable infrastructure

Instructions

1. Understand the Architecture Layers