How to generate CSV in PHP that will be displayed correctly everywhere?

Question

PHP

It seems to be a simple task to make CSV.
I create it with , then convert from UTF-8 to Windows-1251 with iconv. For most users, it opens correctly, you can immediately work with columns. But for many text fields - in krakozyabry.
fputcsv($fp, $fields,";");

Answer 1

It's about the BOM

$fp = fopen('testcsv.csv', 'w');
fputs($fp, chr(0xEF) . chr(0xBB) . chr(0xBF)); // BOM
fputcsv($fp, array('Item', 'Столбец 1', 'Данные'), ';');
fclose($fp);

Answer 2

and why in windows-1251?