Installation

System Requirements

• Web server with URL rewriting
• PHP 7.1 or newer

Step 1: Install Composer

Don’t have Composer? It’s easy to install by following the instructions on their download page.

Step 2: Install Slim

We recommend you install Slim with Composer.Navigate into your project’s root directory and execute the bash commandshown below. This command downloads the Slim Framework and its third-partydependencies into your project’s vendor/ directory.

composer require slim/slim:4.0.0

Step 3: Install a PSR-7 Implementation and 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.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 PSR-7

composer require slim/psr7

Nyholm PSR-7 and Nyholm PSR-7 Server

composer require nyholm/psr7 nyholm/psr7-server

Guzzle PSR-7 and Guzzle HTTP Factory

composer require guzzlehttp/psr7 http-interop/http-factory-guzzle

Zend Diactoros

composer require zendframework/zend-diactoros

Step 4: Hello World

<?php
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Factory\AppFactory;
require __DIR__ . '/../vendor/autoload.php';
$app = AppFactory::create();
$app->get('/', function (Request $request, Response $response, $args) {
    $response->getBody()->write("Hello world!");
    return $response;
});
$app->run();