Register::checkItems

static function checkItems($items, &$errors)
{
	$emailItems = [];
	$phoneItems = [];
	$errorEmailItems = [];
	$errorPhoneItems = [];
	$phoneCnt = 0;
	$emailCnt = 0;
	$dailyPhoneLimit = (
		Loader::includeModule('bitrix24')
		&& CBitrix24::getLicenseType() === 'project'
			? 10
			: 0 // unlimited
	);

	$date = new DateTime();
	$date->add('-1 days');

	$pastPhoneInvitationNumber = 0;
	if ($dailyPhoneLimit > 0)
	{
		$pastPhoneInvitationNumber = InvitationTable::getList([
			'select' => [ 'ID' ],
			'filter' => [
				'=INVITATION_TYPE' => BitrixIntranetInvitation::TYPE_PHONE,
				'>DATE_CREATE' => $date,
			],
			'count_total' => true,
		])->getCount();
	}

	$dailyPhoneLimitExceeded = false;
	foreach ($items as $item)
	{
		if (isset($item["PHONE"]))
		{
			$item["PHONE"] = trim($item["PHONE"]);
			if (self::checkPhone($item))
			{
				if (
					$dailyPhoneLimit <= 0
					|| ($pastPhoneInvitationNumber + $phoneCnt) < $dailyPhoneLimit
				)
				{
					$phoneItems[] = $item;
					$phoneCnt++;
				}
				else
				{
					$dailyPhoneLimitExceeded = true;
//						$errorPhoneItems[] = $item["PHONE"];
				}
			}
			else
			{
				$errorPhoneItems[] = $item["PHONE"];
			}
		}
		elseif (isset($item["EMAIL"]))
		{
			$item["EMAIL"] = trim($item["EMAIL"]);
			if (check_email($item["EMAIL"]))
			{
				$emailItems[] = $item;
				$emailCnt++;
			}
			else
			{
				$errorEmailItems[] = $item["EMAIL"];
			}
		}
	}

	if ($dailyPhoneLimitExceeded)
	{
		$errors[] = Loc::getMessage("INTRANET_INVITATION_DAILY_PHONE_LIMIT_EXCEEDED");
	}

	if ($phoneCnt >= 5)
	{
		$errors[] = Loc::getMessage("INTRANET_INVITATION_PHONE_LIMIT_EXCEEDED");
	}

	if ($emailCnt > self::getMaxEmailCount())
	{
		$errors[] = Loc::getMessage("INTRANET_INVITATION_EMAIL_LIMIT_EXCEEDED");
	}

	if (!empty($errorEmailItems))
	{
		$errors[] = Loc::getMessage("INTRANET_INVITATION_EMAIL_ERROR")." ".implode(", ", $errorEmailItems);
	}

	if (!empty($errorPhoneItems))
	{
		$errors[] = Loc::getMessage("INTRANET_INVITATION_PHONE_ERROR")." ".implode(", ", $errorPhoneItems);
	}

	return [
		"PHONE_ITEMS" => $phoneItems,
		"EMAIL_ITEMS" => $emailItems
	];
}