title: Drupal 7 LDAP integration
body: <p>When installing Drupal 7 module <a href="http://drupal.org/project/ldap" rel="nofollow">http://drupal.org/project/ldap</a>, I get the error.</p>
  
  <blockquote>
    <p>No LDAP Extension is loaded for PHP, so LDAP will not work properly.
    (Currently using LDAP Extension Loaded Failed)</p>
  </blockquote>
  
  <p>Does this mean I have to install the ldap extension for PHP? If so, how do I do this on Ubuntu?</p>