bitrix template 'csv export'

csv.export.php

<?php
require $_SERVER['DOCUMENT_ROOT'] . '/bitrix/modules/main/include.php';
require_once $_SERVER['DOCUMENT_ROOT'] . '/bitrix/modules/main/classes/general/csv_data.php';

$strFilePath = $_SERVER['DOCUMENT_ROOT'] . '/upload/catalog.csv';
$obCsvFile = new CCSVData('R', false);
$obCsvFile->LoadFile($strFilePath);
$obCsvFile->SetDelimiter(';');

$arCatalog = array();
$arKeys = array();
$i = 0;
while ($arFields = $obCsvFile->Fetch()) {
    if ($i == 0) {
        $arKeys = $arFields;
        $i++;
        continue;
    }
    $arItem = array_flip($arKeys);
    $j = 0;
    foreach ($arItem as $strKey => $strValue) {
        $arItem[$strKey] = $arFields[$j];
        $j++;
    }
    $arCatalog[] = $arItem;
}