title: PHP way to find the web server's temp path?
body: <p>When you handle an HTTP upload the file is uploaded to</p>
  
  <pre><code>$_FILES['field_name']['tmp_name']
  </code></pre>
  
  <p>I know I could extract the temp path from there. But I was expecting maybe a <code>$_SERVER</code> param that had the temp path (there's none) or other elegant way of knowing it.</p>
  
  <p>Is there any?</p>