Обновление стоимости товара

$product_id = [0, 0, 47, 45, 46, 158, 136, 137, 140, 51, 42];

if (($handle = fopen("price.csv", "r")) !== FALSE) {
 $i = 1;

 while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
 foreach ($data as $key => $value) {
 if ($key <= 2){ continue; }
 echo '<b>ID_PRICE:</b> '.$data['0'].' || <b>CURRENT:</b> '.$data['1'].' || <b>ID_PRODUCT:</b> '.$product_id[$key].' || <b>PRICE:</b> '.$value;
 echo '<br>';
 $arFields = Array( "PRODUCT_ID" => $product_id[$key], "CATALOG_GROUP_ID" => $data['0'], "PRICE" => $value, "CURRENCY" => $data['1']);
 $res = CPrice::GetList(
 array(),
 array(
 "PRODUCT_ID" => $product_id[$key],
 "CATALOG_GROUP_ID" => $data['0'],
 )
 );
 if ($arr = $res->Fetch()) {
 CPrice::Update($arr["ID"], $arFields);
 echo '<b>Цена обновлена</b>';
 } else {
 CPrice::Add($arFields);
 echo '<b>Цена добавлена</b>';
 }
 echo '<br>';

 }

 $i++;
 echo '<br><br><br>';
 }
}
 
 $product_id = [0, 0, 76, 77, 78, 79, 80, 129, 130, 114, 115];

if (($handle = fopen("price-1.csv", "r")) !== FALSE) {
 $i = 1;

 while (($data = fgetcsv($handle, 1000, ";")) !== FALSE) {
 foreach ($data as $key => $value) {
 if ($key <= 1){ continue; }
 echo '<b>ID_PRICE:</b> '.$data['0'].' || <b>CURRENT:</b> '.$data['1'].' || <b>ID_PRODUCT:</b> '.$product_id[$key].' || <b>PRICE:</b> '.$value;
 echo '<br>';

 $arFields = Array( "PRODUCT_ID" => $product_id[$key], "CATALOG_GROUP_ID" => $data['0'], "PRICE" => $value, "CURRENCY" => $data['1']);
 $res = CPrice::GetList(
 array(),
 array(
 "PRODUCT_ID" => $product_id[$key],
 "CATALOG_GROUP_ID" => $data['0'],
 )
 );
 if ($arr = $res->Fetch()) {
 CPrice::Update($arr["ID"], $arFields);
 echo '<b>Цена обновлена</b>';
 } else {
 CPrice::Add($arFields);
 echo '<b>Цена добавлена</b>';
 }
 echo '<br>';

 }

 $i++;
 echo '<br><br><br>';
 }
}