How to fix sales_notes encoding?

Question

1C-Bitrix

Good day everyone.
The site works in UTF-8 encoding, edited yandex_run.php, added $sales_notes_value. In the generated file for Yandex upload, sales_notes has the form of hieroglyphs

<sales_notes>Предоплата. Наличный и безналичный расчет.</sales_notes>

Tell me how to fix this bug?

Answer 1

Understood.
Then we change the encoding

$sales_notes_value = iconv('UTF-8', 'CP1251', $sales_notes_value);