CTaskNotifications::getUserAvatar

static function getUserAvatar(int $userId): string
{
	static $cache = [];

	if (!array_key_exists($userId, $cache))
	{
		$users = User::getData([$userId], ['ID', 'PERSONAL_PHOTO']);
		$user = $users[$userId];

		$cache[$userId] = UIAvatar::getPerson($user['PERSONAL_PHOTO']);
	}

	return $cache[$userId];
}