static function get_appIds() { if (EIConfig::$appIds == null) { EIConfig::load_appsXML(); $ids = EIConfig::$appsXML->xpath("/apps/app/@id"); $appIds = array(); $i = 0; foreach ($ids as $id) { $appIds[$i] = (string) $id; $i++; } EIConfig::$appIds = $appIds; } return EIConfig::$appIds; }