CCrmActivity::DoSaveCommunications

static function DoSaveCommunications($ID, &$arComms, $arFields = array(), $registerEvents = true, $checkPerms = true)
{
	global $DB;

	$ID = intval($ID);
	if($ID <= 0 || !is_array($arComms))
	{
		self::RegisterError(array('text' => 'Invalid arguments are supplied.'));
		return false;
	}

	if(!is_array($arPresentComms = self::GetCommunications($ID)))
	{
		self::RegisterError(array('text' => self::GetLastErrorMessage()));
		return false;
	}

	$ar2Delete = array();
	$ar2Add = array();
	foreach($arComms as $arComm)
	{
		$commID = isset($arComm['ID']) ? intval($arComm['ID']) : 0;
		if($commID <= 0)
		{
			$ar2Add[] = $arComm;
			continue;
		}
	}

	foreach($arPresentComms as $arPresentComm)
	{
		$presentCommID = intval($arPresentComm['ID']);
		$found = false;
		foreach($arComms as $arComm)
		{
			$commID = isset($arComm['ID']) ? intval($arComm['ID']) : 0;
			if($commID === $presentCommID)
			{
				$found = true;
				break;
			}
		}

		if(!$found)
		{
			$ar2Delete[] = $arPresentComm;
		}
	}


	if($ID > 0)
	{
		self::DeleteCommunications($ID);
	}

	if($registerEvents)
	{
		foreach($ar2Delete as $arComm)
		{
			self::RegisterCommunicationEvent(
				$ID,
				$arFields,
				$arComm,
				'REMOVE',
				$checkPerms
			);
		}
	}

	if(count($arComms) == 0)
	{
		return true;
	}

	$bulkColumns = '';
	$bulkValues = array();

	foreach($arComms as &$arComm)
	{
		if(isset($arComm['ID']))
		{
			unset($arComm['ID']);
		}
		$arComm['TYPE'] = (string)($arComm['TYPE'] ?? '');
		$arComm['VALUE'] = (string)($arComm['VALUE'] ?? '');

		$data = $DB->PrepareInsert(self::COMMUNICATION_TABLE_NAME, $arComm);
		if($bulkColumns == '')
		{
			$bulkColumns = $data[0];
		}

		$bulkValues[] = $data[1];
	}
	unset($arComm);

	if(count($bulkValues) == 0)
	{
		self::RegisterError(array('text' => 'There are no values for insert.'));
		return false;
	}

	$query = '';
	foreach($bulkValues as &$value)
	{
		if($query !== '')
		{
			$query .= ',';
		}

		$query .= "($value)";
	}

	if($query == '')
	{
		self::RegisterError(array('text' => 'Could not build query.'));
		return false;
	}

	$DB->Query(
		'INSERT INTO '.self::COMMUNICATION_TABLE_NAME.'('.$bulkColumns.') VALUES'.$query,
		false,
		'File: '.__FILE__.'
Line: '.__LINE__
	);

	if($registerEvents)
	{
		foreach($ar2Add as $arComm)
		{
			self::RegisterCommunicationEvent(
				$ID,
				$arFields,
				$arComm,
				'ADD',
				$checkPerms
			);
		}
	}
	return true;
}