title: Drupal Conditional PHP if admin or user has certain role
body: <p>The following will do 'something' if the user is admin. </p>
  
  <pre><code>&lt;?php if (($is_admin)) : ?&gt;
    do something
  &lt;?php endif; ?&gt;
  </code></pre>
  
  <p>How can I change this so 'something' will happen if the user is admin or has a certain role?
  Thanks </p>