Problem downloading a php export

Question

Good afternoon, I have a script where generates an excel spreadsheet with information, but after the exchange of the server started to give problem, before it generated and downloaded normally but now just saved in the server the file perfectly. But instead of downloading the file opens a page with coding defects. follows below the part of the code that should bring the download.

    header('Content-Type: application/vnd.ms-excel'); //mime type
    header('Content-Disposition: attachment;filename="'.$filename.'"'); //tell browser what's the file name
    header('Cache-Control: max-age=0'); //no cache
    readfile("download/".$filename);
    exit();

Answer 1

Use that way and it’s worked.

// Configurações header para forçar o download
header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header ("Last-Modified: " . gmdate("D,d M YH:i:s") . " GMT");
header ("Cache-Control: no-cache, must-revalidate");
header ("Pragma: no-cache");
header ("Content-type: application/x-msexcel");
header ("Content-Disposition: attachment; filename=\"file.xls\"" );
header ("Content-Description: PHP Generated Data" );


// Envia o conteúdo do arquivo
echo $html;
exit;