## 请求方法 Every HTTP request has a method that is typically one of: * GET * POST * PUT * DELETE * HEAD * PATCH * OPTIONS You can inspect the HTTP request’s method with the Request object method appropriately named`getMethod()`. > 您可以使用适当命名为`getMethod()`的请求对象方法来检查HTTP请求的方法。 ~~~php $method = $request->getMethod(); ~~~ It is possible to fake or*override*the HTTP request method. This is useful if, for example, you need to mimic a`PUT`request using a traditional web browser that only supports`GET`or`POST`requests. > 可以伪造或`覆盖`HTTP请求方法。例如，如果您需要使用只支持`GET`或`POST`请求的传统web浏览器来模拟`PUT`请求，这是非常有用的。 > **Heads Up!** **注意!** To enable request method overriding the [Method Overriding Middleware ](https://www.kancloud.cn/dehuadong/slim4/1331999) must be injected into your application. > 要启用请求方法覆盖，必须将`方法覆盖中间件`注入到应用程序中。 > There are two ways to override the HTTP request method. You can include a`METHOD`parameter in a`POST`request’s body. The HTTP request must use the`application/x-www-form-urlencoded`content type. > 有两种方法覆盖HTTP请求方法。您可以在`POST`请求的正文中包含一个`方法`参数。HTTP请求必须使用`application/x-www-form-urlencoded`内容类型。 ~~~bash POST /path HTTP/1.1 Host: example.com Content-type: application/x-www-form-urlencoded Content-length: 22 data=value&_METHOD=PUT ~~~ Figure 3: Override HTTP method with \_METHOD parameter. You can also override the HTTP request method with a custom`X-Http-Method-Override`HTTP request header. This works with any HTTP request content type. > 您还可以使用自定义的`X-Http-Method-Override`HTTP请求头来覆盖HTTP请求方法。这适用于任何HTTP请求内容类型。 ~~~bash POST /path HTTP/1.1 Host: example.com Content-type: application/json Content-length: 16 X-Http-Method-Override: PUT {"data":"value"} ~~~ Figure 4: Override HTTP method with X-Http-Method-Override header. ## The Request URI 请求URI Every HTTP request has a URI that identifies the requested application resource. The HTTP request URI has several parts: > 每个HTTP请求都有一个URI来标识所请求的应用程序资源。HTTP请求URI有几个部分: * Scheme (e.g.`http`or`https`) * Host (e.g.`example.com`) * Port (e.g.`80`or`443`) * Path (e.g.`/users/1`) * Query string (e.g.`sort=created&dir=asc`) You can fetch the PSR-7 Request object’s[URI object](http://www.php-fig.org/psr/psr-7/#3-5-psr-http-message-uriinterface)with its`getUri()`method: > 你可以用它的`getUri()`方法获取PSR-7请求对象的[URI object](http://www.php-fig.org/psr/psr-7/#3-5-psr-http-message-uriinterface): ~~~php $uri = $request->getUri(); ~~~ The PSR-7 Request object’s URI is itself an object that provides the following methods to inspect the HTTP request’s URL parts: > PSR-7请求对象的URI本身就是一个对象，它提供以下方法来检查HTTP请求的URL部分: * getScheme() * getAuthority() * getUserInfo() * getHost() * getPort() * getPath() * getBasePath() * getQuery()(returns the full query string, e.g.`a=1&b=2`) * getFragment() * getBaseUrl() You can get the query parameters as an associative array on the Request object using`getQueryParams()`. > 可以使用`getQueryParams()`将查询参数作为请求对象上的关联数组获取。 **Base Path** If your Slim application's front-controller lives in a physical subdirectory beneath your document root directory, you can fetch the HTTP request's physical base path (relative to the document root) with the Uri object's`getBasePath()`method. This will be an empty string if the Slim application is installed in the document root's top-most directory. > **Base Path** > > 如果Slim应用程序的前端控制器位于文档根目录下的物理子目录中，则可以使用Uri对象的`getBasePath()`方法获取HTTP请求的物理基路径(相对于文档根目录)。如果Slim应用程序安装在文档根目录的最上面的目录中，那么这将是一个空字符串。