title: What does $_files array contain? How to reference it?
body: <p>I'm a raw PHP beginner. Check out this sample upload script: </p>
  
  <pre><code>&lt;?php
  if ($_FILES["file"]["error"] &gt; 0)
  {
    echo "Error: " . $_FILES["file"]["error"] . "&lt;br /&gt;";
    }
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "&lt;br /&gt;";
    echo "Type: " . $_FILES["file"]["type"] . "&lt;br /&gt;";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb&lt;br /&gt;";
    echo "Stored in: " . $_FILES["file"]["tmp_name"];
    }
  ?&gt;    
  </code></pre>
  
  <p>Now, how to see exactly what values this built-in array contain? I cannot find such an info anywhere. Thanks for the time.</p>