title: Clarification with JWT implementation in PHP
body: <p>I recently heard about JWT and by this I read the docs provided by this <a href="https://jwt.io/" rel="nofollow noreferrer">site</a>. My questions are as follows:</p>
  
  <ol>
  <li>Is <a href="https://jwt.io/" rel="nofollow noreferrer">https://jwt.io/</a> the official site of JWT?</li>
  <li>Do I need to register on that site in order to use JWT on my application?</li>
  <li>Can anyone provide a straightforward explanation of how does JWT be implemented, if #2 is no.</li>
  </ol>