REST and content-type

Question

I have a question is it possible to detect content type of request, I'm building REST service and tried $_SERVER['CONTENT_TYPE'] but I get undefined index error. I need this to determine with content type I should accept and which to be rejected.

Answer 1

If you're looking for request type - GET, POST, PUT, DELETE - it's $_SERVER["REQUEST_METHOD"] .

From your question I can't actually determine if you're talking about request type of something else.

Edit.

Content-type header is usually NOT sent in request. It's not mandatory in HTTP protocol. And even if it is sent, you can't rely on it - just like on any other data that comes from user. It can be fake.

Anyway you can get all request headers with getallheaders() PHP function.

http://php.net/getallheaders

Answer 2

我的解释是，您想要响应请求不可接受的HTTP状态代码4XX ，请看一下这个问题。

Answer 3

You can try headers_list() .

Example:

<?php
header('Content-Type: application/json');

$headers = headers_list();

var_dump($headers);
?>

OUTPUT:

array(2) {
  [0]=>
  string(23) "X-Powered-By: PHP/5.4.5"
  [1]=>
  string(24) "Content-Type: application/json"
}