Remix.asia ... 

IE6はShiftJISかUTF8が必須

$filename= "本語ファイル名.tsv";

$filename= mb_convert_encoding( $filename, "UTF8");

$filename= urlencode( $filename );

		

header( 'Content-Type: application/octet-stream; name="'.$filename.'"' );

header( 'Content-Disposition: attachment; filename="'.$filename.'"' );

header( 'Content-Length: '.filesize( "/test.dat" ) );

header( 'Connection: close' );


@readfile( "/test.dat" );

exit();

確認環境は