Learn SLIM with Real Code Examples

Install PHP 8.x or higher and Composer

Create a new project: `composer require slim/slim`

Set up a PSR-7 compatible HTTP server or use built-in PHP server

Optionally install a dependency injection container like PHP-DI

Configure routing and middleware for your application

Install PHP 8.x+ and Composer

Set up a local server or use built-in PHP server

Install Slim and dependencies via Composer

Configure DI container if needed

Verify by creating a test route

composer.json - dependencies

config/settings.php - app configuration

public/index.php - front controller

src/Routes.php - route definitions

src/Middleware.php - middleware registration

composer require slim/slim - install Slim

php -S localhost:8080 -t public - run dev server

composer require slim/psr7 - PSR-7 HTTP messages

composer require php-di/php-di - optional DI container

vendor/bin/phpunit - run tests

No built-in i18n; use external libraries

Flexible date, time, and number formatting via PHP Intl

UTF-8 encoding by default

Middleware can handle localization

Supports multi-language API responses

Accessible via browser and API clients

Follow web standards for front-end accessibility

Supports multi-language apps through templating engines

Secure session and auth mechanisms implemented manually

Testable via HTTP clients or automated tests

No built-in UI components

Integrate templating engines like Twig or Plates

Supports JSON/HTML/XML output

Front-end frameworks fully compatible

Custom helpers or middleware for rendering optional

Request and response objects are immutable

Middleware manages pre/post request processing

Sessions handled manually or via libraries

Cache via external systems like Redis

Dependency injection manages service state

No built-in ORM; integrate Eloquent, Doctrine, or other ORM

Data validation via middleware or external libraries

Cache and session handling implemented as needed

Database migrations handled by separate tools

Flexible data management without framework restrictions