static function isDynamicVatChargingEnabled() { if ( isset( $GLOBALS['eZVATManager_isDynamicVatChargingEnabled'] ) ) return $GLOBALS['eZVATManager_isDynamicVatChargingEnabled']; $enabled = is_object( eZVATManager::loadVATHandler() ); $GLOBALS['eZVATManager_isDynamicVatChargingEnabled'] = $enabled; return $enabled; }