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Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs.

Slim Framework

Slim is a PHP micro-framework that helps you quickly write simple yet powerful web applications and APIs.

Installation

It's recommended that you use Composer to install Slim.

$ composer require slim/slim

This will install Slim and all required dependencies. Slim requires PHP 7.4 or newer.

Choose a PSR-7 Implementation & ServerRequest Creator

Before you can get up and running with Slim you will need to choose a PSR-7 implementation that best fits your application. A few notable ones:

Slim-Psr7 - This is the Slim Framework PSR-7 implementation
httpsoft/http-message & httpsoft/http-server-request - This is the fastest, strictest and most lightweight implementation available
Nyholm/psr7 & Nyholm/psr7-server - Performance is almost the same as the HttpSoft implementation
Guzzle/psr7 - This is the implementation used by the Guzzle Client, featuring extra functionality for stream and file handling
laminas-diactoros - This is the Laminas (Zend) PSR-7 implementation

Slim-Http Decorators

Slim-Http is a set of decorators for any PSR-7 implementation that we recommend is used with Slim Framework. To install the Slim-Http library simply run the following command:

composer require slim/http

The ServerRequest and Response object decorators are automatically detected and applied by the internal factories. If you have installed Slim-Http and wish to turn off automatic object decoration then you can use the following statements:

<?php

use Slim\Factory\AppFactory;
use Slim\Factory\ServerRequestCreatorFactory;

AppFactory::setSlimHttpDecoratorsAutomaticDetection(false);
ServerRequestCreatorFactory::setSlimHttpDecoratorsAutomaticDetection(false);

$app = AppFactory::create();

// ...

Hello World using AppFactory with PSR-7 auto-detection

In order for auto-detection to work and enable you to use AppFactory::create() and App::run() without having to manually create a ServerRequest you need to install one of the following implementations:

Slim-Psr7 - Install using composer require slim/psr7
httpsoft/http-message & httpsoft/http-server-request - Install using: composer require httpsoft/http-message httpsoft/http-server-request
Nyholm/psr7 & Nyholm/psr7-server - Install using composer require nyholm/psr7 nyholm/psr7-server
Guzzle/psr7 - Install using composer require guzzlehttp/psr7
laminas-diactoros - Install using composer require laminas/laminas-diactoros

Then create file public/index.php.

<?php
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Factory\AppFactory;

require __DIR__ . '/../vendor/autoload.php';

// Instantiate App
$app = AppFactory::create();

// Add error middleware
$app->addErrorMiddleware(true, true, true);

// Add routes
$app->get('/', function (Request $request, Response $response) {
    $response->getBody()->write('<a href="/hello/world">Try /hello/world</a>');
    return $response;
});

$app->get('/hello/{name}', function (Request $request, Response $response, $args) {
    $name = $args['name'];
    $response->getBody()->write("Hello, $name");
    return $response;
});

$app->run();

You may quickly test this using the built-in PHP server:

$ php -S localhost:8000 -t public

Going to http://localhost:8000/hello/world will now display "Hello, world".

For more information on how to configure your web server, see the Documentation.

Tests

To execute the test suite, you'll need to install all development dependencies.

$ git clone https://github.com/slimphp/Slim
$ composer install
$ composer test

Contributing

Please see CONTRIBUTING for details.

Learn More

Learn more at these links:

Security

If you discover security related issues, please email security@slimframework.com instead of using the issue tracker.

For enterprise

Available as part of the Tidelift Subscription.

The maintainers of Slim and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.