title: Calling WordPress REST API from server
body: <p>I have an application server written in PHP, and it needs to interact with a WordPress deployment through WP's REST API. I am having difficulty calling the WP's REST API with authentication. For example, how do I create a user after authenticated with WP?</p>
  
  <p>Most of the examples I found online are either using Ajax or cookies for authentication, which don't work in the server situation.</p>
  
  <p>Can anyone suggest?</p>