获取“内容类型” PHP中的请求标头 [英] Get "Content-Type" header of request in PHP

问题描述

我正在用PHP实现REST服务。该服务应该能够支持多种输入和输出格式（JSON，XML）。出于这个原因，我想检查请求标题接受和内容类型，了解客户发送和请求的内容类型。

I'm implementing a REST service in PHP. This service should be able to support multiple input and output formats (JSON, XML). For that reason I want to check the request headers "Accept" and "Content-Type" for the type of content sent and requested by the client.

访问Accept标题非常简单，只需使用 $ _ SERVER ['HTTP_ACCEPT'] 即可。但访问Content-Type标题似乎是一项艰巨的任务。我搜索了PHP文档和Web，但提供的唯一解决方案是使用PHP函数 apache_request_headers（），仅当PHP作为Apache模块安装时才支持，在我的情况下这不是真的。

Accessing the "Accept" header is a simple as using $_SERVER['HTTP_ACCEPT']. But accessing the "Content-Type" header seems to be a difficult task. I searched the PHP documentation and the web, but the only solution offered was the use of the PHP function apache_request_headers() which is only supported when PHP is installed as an Apache module, which is not true in my case.

所以现在我的问题是：我如何访问请求的标题Content-Type？

So my question now: How can I access the header "Content-Type" of a request?

推荐答案

普通（GET）请求没有 Content-Type 标头。对于POST请求，它将显示为 $ _ SERVER [CONTENT_TYPE] ，其值类似于multipart / form-data或application / x-www -form-urlencoded。

Normal (GET) requests do not have a Content-Type header. For POST requests it would appear as $_SERVER["CONTENT_TYPE"], with a value like multipart/form-data or application/x-www-form-urlencoded.

这是CGI / 1.1规范规定的： http://www.ietf.org/rfc/rfc3875 。

This is mandated by the CGI/1.1 specification: http://www.ietf.org/rfc/rfc3875.

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