header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename('mismatch_log'. $month . '.txt'));
header("Cache-Control: no-cache, must-revalidate");
header('Pragma: public');
header('Content-Length: ' . filesize('mismatch_log'. $month . '.txt')); readfile('mismatch_log'. $month . '.txt');
header("Refresh:0");