PHP is used for Web content management systems including MediaWiki, [301] WordPress, [302] Joomla, [303] Drupal, [304] Moodle, [305] eZ Publish, eZ Platform, and SilverStripe. [306] As of January 2013, PHP was used in more than 240 million websites (39% of those sampled) and was installed on 2.1 million web servers. [307]