如何创建RESTfull服务以从客户端检索json或xml文件

Question

I have to write a RESTfull service in PHP which can send json data to the caller and retrieve json (or xml) data from the user. I know how to send json or xml data, but not how I can get data back from the user.

Answer 1

A RESTful api usually doesnt expect a "response" from the client. What you want to do is to create an endpoint for the client to POST the specific content.

/api/user/?json={...}

On the PHP side you can retrieve the data with $_REQUEST['json'] (which includes both POST and GET.

There is something called HATEOS that can be used for telling the client about links associated with the current resource (if you want to "chain" calls between the client and the service).

Answer 2

The simplest way is getting JSON data as POST or PUT body. To get PHP body:

$entityBody = file_get_contents('php://input');

and then decode json into a PHP object:

$requestBody = json_decode ( $entityBody);

If you are not sour the request body is XML or JSON then check Content-Type in the header.