Is it possible to force Excel recognize UTF-8 CSV files automatically?

Question

I\'m developing a part of an application that\'s responsible for exporting some data into CSV files. The application always uses UTF-8 because of its multilingual nature at

Answer 1

Working solution for office 365

• save in UTF-16 (no LE, BE)
• use separator \t

Code in PHP

$header = ['číslo', 'vytvořeno', 'ěščřžýáíé'];
$fileName = 'excel365.csv';
$fp = fopen($fileName, 'w');
fputcsv($fp, $header, "\t");
fclose($fp);

$handle = fopen($fileName, "r");
$contents = fread($handle, filesize($fileName));
$contents = iconv('UTF-8', 'UTF-16', $contents);
fclose($handle);

$handle = fopen($fileName, "w");
fwrite($handle, $contents);
fclose($handle);