Learn SLIM with Real Code Examples
Updated Nov 27, 2025
Learning Path
Learn PHP and object-oriented programming
Understand HTTP request/response cycle
Learn PSR-7 and PSR-15 standards
Practice building RESTful APIs with Slim
Explore middleware, DI, and route grouping
Skill Improvement Plan
Week 1: Simple route-based API
Week 2: Add middleware and error handling
Week 3: Integrate database via ORM
Week 4: Implement authentication and caching
Week 5: Test, optimize, and deploy API services
Interview Questions
What is Slim and why is it called a micro-framework?
How does Slim implement routing and middleware?
Explain PSR-7 and its importance in Slim
How do you handle dependency injection in Slim?
How would you secure a Slim-based REST API?
Cheat Sheet
$app = AppFactory::create(); // initialize Slim app
$app->get('/route', function($request, $response) {...}); // define route
$app->add(MiddlewareClass::class); // add middleware
$response->getBody()->write('Hello'); // write response
$app->run(); // run the application
Books
Slim Framework Essentials
Mastering Slim Framework
Building APIs with Slim
Slim 4 Cookbook
Practical Slim Framework
Tutorials
Getting Started with Slim
Building REST APIs
Middleware in Slim
Dependency Injection with Slim
Advanced Routing and Error Handling
Official Docs
https://www.slimframework.com/docs/
Slim GitHub repository
Slim API documentation
Community Links
Slim Slack
StackOverflow Slim tag
Slim GitHub repository
Slim official forums
Community tutorials and blogs
Community Support
Slim GitHub repository
Slim Framework Slack and forums
StackOverflow Slim tag
Documentation and tutorials on Slim website
Community blogs and packages