title: PHP header HTTP 1.0 vs 1.1
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/2769371/404-header-http-1-0-or-1-1">404 header - HTTP 1.0 or 1.1?</a>  </p>
  </blockquote>
  
  
  
  <p>Should you use</p>
  
  <pre><code>header( "HTTP/1.0 404 Not Found", true, 404 );
  </code></pre>
  
  <p>instead of</p>
  
  <pre><code>header( "HTTP/1.1 404 Not Found", true, 404 );
  </code></pre>
  
  <p>when the user agent uses HTTP/1.0? That is, is it good to reply with the same HTTP version?</p>
  
  <p>Btw, I'm using it to claim that a page doesn't exist to users currently not logged in. I understand that it is different versions and that HTTP/1.1 has different functions.</p>