Learn SLIM with Real Code Examples

Create a REST API for a blog application

Build a JSON API for a mobile app

Implement JWT-based authentication middleware

Develop a lightweight admin dashboard backend

Set up logging and error handling for microservices

Check route definitions for typos

Ensure PSR-7 HTTP message objects are correctly used

Verify middleware order for request/response handling

Enable error display in development

Check Composer autoload and namespace configuration

Use PHPUnit for unit testing

Test routes and middleware independently

Mock request and response objects

Use integration tests for API endpoints

Check performance under simulated load

Shared hosting with PHP support

Docker containers for microservices

Cloud platforms: AWS, DigitalOcean, Heroku

CI/CD pipelines with GitHub Actions or GitLab CI

Load balancers for scalable API deployments

Composer for dependency management

PSR-7 and PSR-15 compliant packages

PHP-DI or other DI containers

Slim Middleware ecosystem

Templating engines like Twig or Plates

ORMs: Eloquent, Doctrine, or Propel

Authentication: OAuth2, JWT, or custom middleware

Front-end frameworks: React, Vue, Angular

Cache: Redis, Memcached

Testing: PHPUnit, Pest

Use middleware for reusable request/response logic

Keep routes and services modular

Integrate caching early for API-heavy apps

Use DI container for clean dependency management

Test APIs incrementally to catch issues early

Managing middleware stack correctly

Ensuring PSR compliance with external packages

Scaling microservice architecture

Integrating Slim with complex applications

Handling security and input validation manually