<?php
\Bitrix\Main\Diag\Debug::writeToFile(
var_export([
'$arData' => $arData
], true),
date("Y-m-d H:i:s").PHP_EOL.__FILE__.':'.__LINE__,
'_exch_'.date("Y-m-d").'.log'
);
\Bitrix\Main\Diag\Debug::dumpToFile($arResult);
\Bitrix\Main\Diag\Debug::startTimeLabel("catalogFilter");
#code
\Bitrix\Main\Diag\Debug::endTimeLabel("catalogFilter");
\Bitrix\Main\Diag\Debug::dumpToFile(\Bitrix\Main\Diag\Debug::getTimeLabels());