title: Display processing page then redirect when complete
body: <p>I have a script that takes a while.</p>
  
  <p>I'd like to display a page during the processing of the script then redirect when the process is complete.</p>
  
  <p>E.g.: form.php -> processing.php -> display_result.php</p>
  
  <p>I would like that processing.php is displayed immediately after form is submitted showing (Processing your information, please wait...)</p>
  
  <p>Once processing is complete the page should be redirected to display_result.php</p>
  
  <p>Is there anyway to sort of flush the content to the browser before processing begins, then redirect when the process is complete?</p>