title: PHP die() vs. echo
body: <p>Can anyone please tell me why line 1 works (returns 35434), but line 2 doesn't (returns blank)?</p>
  
  <ol>
  <li><code>echo $_FILES['userfile']['size'];</code></li>
  <li><code>die ($_FILES['userfile']['size']);</code></li>
  </ol>
  
  <p>Thanks!</p>