PHP ZIP file download

Question

Here is a code which downloads attachment files from the an imap server. Almost all file types (pdf, doc, xls, etc) are being downloaded correctly, where as some zip files g

Answer 1

This is really good for big file download. User will be receiving file immediately. Maybe zip will be correct too this way.

    if(file_exists($filename) && is_readable($filename) && file_exists($filename)){
             header("Content-Disposition: attachment; filename=".basename(str_replace(' ', '_', $filename)));
             header("Content-Type: application/force-download");
             header("Content-Type: application/octet-stream");
             header("Content-Type: application/download");
             header("Content-Description: File Transfer");
             header("Content-Length: " . filesize($filename));
             flush(); // this doesn't really matter.

             $fp = fopen($filename, "r");
             while (!feof($fp))
             {
                 echo fread($fp, 65536);
                 flush(); // this is essential for large downloads
             }
             fclose($fp);
         exit;
    }