CCalendar::GetUser

static function GetUser($userId, $bPhoto = false)
{
	global $USER;
	if (is_object($USER) && (int)$userId === (int)$USER->GetId() && !$bPhoto)
	{
		$user = [
			'ID' => $USER->GetId(),
			'NAME' => $USER->GetFirstName(),
			'LAST_NAME' => $USER->GetLastName(),
			'SECOND_NAME' => $USER->GetParam('SECOND_NAME'),
			'LOGIN' => $USER->GetLogin(),
			'PERSONAL_PHOTO' => $USER->GetParam('PERSONAL_PHOTO'),
		];
	}
	else
	{
		$rsUser = CUser::GetByID((int)$userId);
		$user = $rsUser->Fetch();
	}
	return $user;
}