CWebdavDocumentHistory::IsHistoryUpdate

static function IsHistoryUpdate($documentID)
{
	global $USER;

	static $arHistoryFields = array("ID", "DOCUMENT_ID", "MODIFIED", "DOCUMENT");

	$historyService = self::GetHistoryService();
	$result = false;

	if (self::IsGlueEnabled())
	{
		$arFilter = array(
			"DOCUMENT_ID" => $documentID,
			"USER_ID" => $USER->GetID()
		);

		$dbDoc = $historyService->GetHistoryList(
			array("ID" => "DESC"),
			$arFilter,
			false,
			false,
			$arHistoryFields
		);

		CTimeZone::Disable();
		if ($dbDoc && ($arDoc = $dbDoc->Fetch())) // get the last history record
		{
			CTimeZone::Enable();
			if (CWebdavDocumentHistory::GetHistoryState($documentID, $arDoc['ID'], $arDoc) == 'Y')
			{
				$result = $arDoc;
			}
		}
		else
		{
			CTimeZone::Enable();
		}
	}

	return $result;
}