private static function getUCIThumbs($pageTitle, $width, $height, $purge = false)
 {
     global $wgMemc;
     if (!$pageTitle) {
         return array();
     }
     $key = UCIPatrol::getUCIThumbsCacheKey($pageTitle, $width, $height);
     $thumbs = $wgMemc->get($key);
     if (UCIPatrol::UCI_CACHE && is_array($thumbs) && !$purge) {
         return $thumbs;
     }
     $images = UCIPatrol::getUCIForPage($pageTitle);
     $thumbs = array();
     foreach ($images as $pageId => $image) {
         $thumb = UCIPatrol::getUCICacheData($pageId, $image, $width, $height);
         $thumbs[$pageId] = $thumb;
     }
     //$wgMemc->set($key, $thumbs, strtotime("+2 hour"));
     $wgMemc->set($key, $thumbs);
     return $thumbs;
 }