nochmal dateidownload

woran kann es liegen, daß der dateidownload auf meinem localhost apache einwandfrei funktioniert, aber wenn ich das script auf meinen webserver lade (1und1) die dateien nur noch mit 0kb ankommen?

Code:                   In Zwischenablage kopieren (nur IE)

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if($readyToDownload=="yes"){ $size = filesize("files/$edition.zip"); header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); if (preg_match("/MSIE/i", $_SERVER["HTTP_USER_AGENT"])) { header("Content-type: application/zip"); header("Content-Transfer-Encoding: binary"); header("Content-Length: ". $size); header("Content-Disposition: Attachment; filename=$edition.zip"); readfile("files/$edition.zip"); } else { header("Content-type: application/zip"); header("Content-Length: ". $size); header("Content-Disposition: Attachment; filename=$edition.zip"); readfile("files/$edition.zip"); }}else{ echo "you are not allowed to download the requested file<br>";}1">if($readyToDownload=="yes")<br/>{<br/> $size = filesize("files/$edition.zip");<br/><br/> header("Pragma: public");<br/> header("Expires: 0");<br/> header("Cache-Control: must-revalidate, post-check=0, pre-check=0");<br/><br/> if (preg_match("/MSIE/i", $_SERVER["HTTP_USER_AGENT"]))<br/> {<br/>  header("Content-type: application/zip");<br/>  header("Content-Transfer-Encoding: binary");<br/>  header("Content-Length: ". $size);<br/>  header("Content-Disposition: Attachment; filename=$edition.zip");<br/>  readfile("files/$edition.zip");<br/> }<br/> else<br/> {<br/>  header("Content-type: application/zip");<br/>  header("Content-Length: ". $size);<br/>  header("Content-Disposition: Attachment; filename=$edition.zip");<br/>  readfile("files/$edition.zip");<br/> }<br/>}<br/>else<br/>{<br/> echo "you are not allowed to download the requested file<br>";<br/>}<br/>

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