title: Drupal: Rules executing custom PHP don't work
body: <p>I installed the module Rules and created a rule: when content is saved, <code>echo 1+1;</code> is executed.<br>
  Nothing happens when I create a new content and save it.</p>
  
  <ul>
  <li>PHP filter is enabled</li>
  <li>Rules module is enabled</li>
  <li>All other conditions and actions work fine</li>
  <li>It works fine on local server</li>
  </ul>
  
  <p>Is there anything wrong in the remote server (Fedora 9, PHP 5.2.9)?<br>
  Is there anything that needs to be enabled in order to allow Rules to execute custom PHP code?</p>