# 安裝 ## 系統需求 * Web server with URL rewriting * PHP 7.1 or newer ## 步驟1:安裝Composer Don’t have Composer? It’s easy to install by following the instructions on their[download](https://getcomposer.org/download/)page. ## 第二步:安裝Slim We recommend you install Slim with[Composer](https://getcomposer.org/). Navigate into your project’s root directory and execute the bash command shown below. This command downloads the Slim Framework and its third-party dependencies into your project’s`vendor/`directory. 我們建議您安裝Slim與Composer。導航到項目的根目錄并執行如下所示的bash命令。該命令將Slim框架及其第三方依賴項下載到項目的 vendor/ 目錄中。 ~~~bash composer require slim/slim ~~~ ## 步驟3:安裝PSR-7實現和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: 在使用Slim之前，您需要選擇最適合您的應用程序的PSR-7實現。為了使自動檢測工作，并使您能夠使用' AppFactory::create() '和' App::run() '無需手動創建' ServerRequest '，您需要安裝以下實現之一: ### [Slim PSR-7](https://github.com/slimphp/Slim-Psr7) ~~~bash composer require slim/psr7 ~~~ ### [Nyholm PSR-7](https://github.com/Nyholm/psr7)and[Nyholm PSR-7 Server](https://github.com/Nyholm/psr7-server) ~~~bash composer require nyholm/psr7 nyholm/psr7-server ~~~ ### [Guzzle PSR-7](https://github.com/guzzle/psr7)and[Guzzle HTTP Factory](https://github.com/http-interop/http-factory-guzzle) ~~~bash composer require guzzlehttp/psr7 http-interop/http-factory-guzzle ~~~ ### [Zend Diactoros](https://github.com/zendframework/zend-diactoros) ~~~bash composer require zendframework/zend-diactoros ~~~ ## 步驟4 ：創建實例 ~~~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'; $app = AppFactory::create(); $app->get('/', function (Request $request, Response $response, $args) { $response->getBody()->write("Hello world!"); return $response; }); $app->run(); ~~~