symfony

Symfony

Symfony is a decoupled, reusable PHP framework and set of components, emphasizing strict typing, PHP Attributes, and enterprise application architecture.

When to Use

• Enterprise PHP Web Applications & APIs: High-performance backend architectures adhering strictly to design patterns.
• Modular Enterprise Microservices: Decoupled Symfony Components (HTTP Kernel, Console, Messenger, Serializer).
• Asynchronous Message Queue Processing: Handling event-driven message architectures with Symfony Messenger.
• REST & GraphQL with API Platform: Auto-generating compliant JSON:API and OpenAPI backends.

Quick Start

// src/Controller/ApiController.php
namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\Routing\Attribute\Route;

class ApiController extends AbstractController
{
    #[Route('/api/status', name: 'api_status', methods: ['GET'])]
    public function status(): JsonResponse
    {
        return $this->json(['status' => 'operational', 'framework' => 'symfony']);
    }
}

Core Concepts

Modern Attribute Routing & Dependency Injection

Writing controllers with PHP 8.2+ native attributes:

namespace App\Controller;

use App\Repository\CustomerRepository;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;

#[Route('/api/v1/customers', name: 'api_customers_')]
class CustomerController extends AbstractController
{
    public function __construct(
        private readonly CustomerRepository $customerRepository
    ) {}

    #[Route('/{id}', name: 'show', methods: ['GET'])]
    public function show(int $id): JsonResponse
    {
        $customer = $this->customerRepository->find($id);

        if (!$customer) {
            return $this->json(['error' => 'Customer not found'], Response::HTTP_NOT_FOUND);
        }

        return $this->json($customer);
    }
}