is::Add

function Add($arFields)
{
	global $DB;

	$strSql1 = "PARENT_ID, LEFT_MARGIN, RIGHT_MARGIN, DEPTH_LEVEL, NAME";
	$strSql2 = (int)$arFields["PARENT_ID"] .", "
		. (int)$arFields["LEFT_MARGIN"] . ", "
		. (int)($arFields["RIGHT_MARGIN"] ?? 0) . ", "
		. (int)($arFields["DEPTH_LEVEL"] ?? 0) .", '"
		. $DB->ForSQL($arFields["NAME"] ?? '', 255)
		."'"
	;

	if (isset($arFields["ATTRIBUTES"]))
	{
		$strSql1 .= ", ATTRIBUTES";
		$strSql2 .= ", '".$DB->ForSQL($arFields["ATTRIBUTES"])."'";
	}

	if (isset($arFields["VALUE"]))
	{
		$strSql1 .= ", VALUE";
		$strSql2 .= ", '".$DB->ForSQL($arFields["VALUE"])."'";
	}

	if($this->_sessid)
	{
		$strSql1 .= ", SESS_ID";
		$strSql2 .= ", '".$DB->ForSQL($this->_sessid)."'";
	}

	$strSql = "INSERT INTO ".$this->_table_name." (".$strSql1.") VALUES (".$strSql2.")";

	$DB->Query($strSql);

	return $DB->LastID();
}