PHP forcing file download. Not showing what amount of space has been downloaded
<p>I have a issue, I have a PHP script that compresses images in a Zip file and then forcing the zip file to download. Now my issue is it's not showing in IE how much space has been downloaded sofar. Eg 2MB's out of 20MB's..... 15secs remaining. Firefox works perfect.</p>

<p>My code</p>

<pre><code>           header("Content-Disposition: attachment; filename=" . urlencode($zipfile));
        header("Content-Type: application/x-zip-compressed");
        header("Content-Description: File Transfer");    
           header("Content-Transfer-Encoding: binary");
           header("Content-Length: " . filesize($filename));

            $fd = fopen($filename,'r');

            $content = fread($fd, filesize($filename));



            print $content;
</code></pre>
