title: Prevent browser from re-sending form information
body: <p>Does anyone know of a way to prevent the browser from asking the user to resend form information. </p>
  
  <p>I know you can redirect the browser with:</p>
  
  <pre><code>&lt;php
      header("location http://example.com");
  ?&gt;
  </code></pre>
  
  <p>But this seems so inefficient and takes 2 request.</p>
  
  <p>Hope you can help.</p>
  
  <p><strong>duplicate of</strong>: <a href="https://stackoverflow.com/questions/665399/how-do-i-stop-the-back-and-refresh-buttons-from-resubmitting-my-form">How do I stop the Back and Refresh buttons from resubmitting my form?</a></p>