check remote filesize with fsockopen (or is there any other way?!)

[Dedix]

I have the following code...

<?
$kb = 1024;
$mb = 1024 * $kb;
$gb = 1024 * $mb;
$tb = 1024 * $gb;

if (!isset($f)) {
$fileurl = "http://domain.com/files/file.mpg";
} else {
$fileurl = $f;
}
$pu = @parse_url($fileurl);
$filename = basename($fileurl);

$domain = $pu['host'];
$file =   $pu['path'];
$host =   $pu['host'];
$http = "GET ".$file." HTTP/1.0\r\nHost: ".$host."\r\n\r\n"; 
$fp = fsockopen ($domain, 80, $errno, $errstr, 30); 

if (!$fp) {
   echo "$errstr ($errno)<br>\n";
} 
else {
    fputs ($fp, $http);
    while (!feof($fp)){
        $chunk= fgets ($fp,128);
        if (strpos($chunk, "ength:"))
    { 
       $size = explode (':', $chunk);

  if($size[1] < $kb) {
       $s = $size[1]." B";
   }
   else if($size[1] < $mb) {
      $s = round($size[1]/$kb,2)." KB";
   }
   else if($size[1] < $gb) {
       $s = round($size[1]/$mb,2)." MB";
  }
   else if($size[1] < $tb) {
       $s = round($size[1]/$gb,2)." GB";
   }
   else {
      $s = round($size[1]/$tb,2)." TB";
   }

   echo "The file $filename has a size of $s";
   break;
}
 }
fclose ($fp);
}
?>

It works well, but sometimes (mainly in case ftp servers) doesn't get the filesize just a blank page.
Does anybody know how i can fix it?
I'd like if it works both http and ftp protocols.

Thanks
Dedix

[diego25]

HTTP works on port 80, but FTP works on port 21.

Diego