Печеньки (Cookie)

$cookie = new \Bitrix\Main\Web\Cookie("CookieName", "CookieValue", time()+86400*30);

$cookie->setSpread(\Bitrix\Main\Web\Cookie::SPREAD_DOMAIN); // распространять куки на все домены

$cookie->setDomain("mydomain.ru"); // домен, как вариант - \Bitrix\Main\Application::getInstance()->getContext()->getRequest()->getHttpHost()

$cookie->setPath("/"); // путь

$cookie->setSecure(false); // безопасное хранение cookie

$cookie->setHttpOnly(false);

\Bitrix\Main\Application::getInstance()->getContext()->getResponse()->addCookie($cookie);

\Bitrix\Main\Context::getCurrent()->getResponse()->writeHeaders();

$request = \Bitrix\Main\Application::getInstance()->getContext()->getRequest();



$cookieValue = $request->getCookie("CookieName");