<?php namespace sgpb; class PopupData { private static $popupData = array(); private function __construct() { } public static function getPopupDataById($popupId, $saveMode = '') { if (!isset(self::$popupData[$popupId])) { self::$popupData[$popupId] = SGPopup::getSavedData($popupId, $saveMode); } return self::$popupData[$popupId]; } }