Stahovani obrazku

$zip = new zipfile();
$adr=Dir($dir);
while($file=$adr->Read()){
  if(!(($file==".")||($file=="..")||($file=="index.php")||($file=="info.txt"))){
    if(!StrStr($file,"thumb.jpg")) $files[]="$file";
  }
}
$adr->Close();
@Sort($files);
$max=SizeOf($files);
$file_info="";

$zobrazit = 100;
$pocet_zaznamu = ceil($max);
if($pocet_zaznamu > $zobrazit){
  $pocet_stranek = ceil($max / $zobrazit);
}else{
  $pocet_stranek = 1;
}
if(!empty($_GET['s'])){
    $start = intval($_GET['s']);
    $start_for = $start;
    $opakuj_for = ($start + $zobrazit) - 1;
}else{
    $start = 0;
    $start_for = $start;
    $opakuj_for = $zobrazit - 1;
}
$aktualni_stranka = ($start/$zobrazit) + 1;
for($i = 0; $i<=$pocet_stranek; $i++){
  $filename=$dir.$files[$i];
  if(@is_dir($filename)){
  }else{
    ++$total_files;
    $f=@FOpen($filename,"rb");
    $add_to_zip = @fread($f,filesize($filename));
    @FClose($f);
    $file_info.= $filename." - ".Round((FileSize($filename)/1024),2)." KiB\r\n";
    $zip->addFile($add_to_zip, $files[$i]);
   }
}
$info.=$file_info."\r\n**************************************************\r\n";
$info.= $down[1].":\t".$_SERVER[SERVER_NAME]."\r\n".$down[2].":\t\t".$datum."\r\n";
$info.= $down[4].":\t\t".$onclicky[popis]."\r\n\t\t\t".$down[3].":".$kolikaty."x | ".$down[5].":".$total_files."x";
$info.="\r\n**************************************************\r\n";
$zip->addFile($info, "!info_".$i."!.txt");
$zip_name = strip_tags($_GET[dir]).".zip";
header("Content-Type: application/x-zip");
header("Content-disposition: attachment; filename=".$zip_name);
echo $zip->file();