$file_for_download = "DreamweaverMX2004-en.zip";

$data_len = strlen($file_for_download);
$size = filesize($file_for_download);
$data_mod = filemtime($file_for_download);
$http_range = $_SERVER['HTTP_RANGE'];

header('Content-type: application/octet-stream');
header('Content-Disposition: attachment; filename="' . $file_for_download . '"');
header('Last-Modified: ' . date('D, d M Y H:i:s \G\M\T' , $data_mod));
header("Content-Length: $size");

$handle = fopen($file_for_download, "r");
if ($http_range !== ''){
 fseek($handle, intval(substr(getenv("HTTP_RANGE"),  6 )));
}else{
 fseek($handle,  0 ,  0 );
}
fpassthru($handle); 
fclose($handle);

set_time_limit ( 0 );

$file_for_download = "DreamweaverMX2004-en.zip";
$data_mod = filemtime($file_for_download);

if (isset($_SERVER)){ $server = &$_SERVER; }else{ $server = 
&$GLOBALS["HTTP_SERVER_VARS"]; }

$workFileName = $file_for_download;
$handle = fopen($file_for_download, "rb");
$size = filesize($file_for_download);

if (isset($server["HTTP_RANGE"]))
{
preg_match ("/bytes=(\d+)-/", $server["HTTP_RANGE"], $m);
$contentSize = $size - intval($m[ 1 ]);
$p1 = $size - $contentSize;
$p2 = $size -  1 ;
$p3 = $size;
fseek ($handle, $p1);
header ("HTTP/1.1 206 Partial Content");
header('Last-Modified: ' . date('D, d M Y H:i:s \G\M\T' , $data_mod));
header ("Cache-Control: None");
header ("Pragma: no-cache");
header ("Accept-Ranges: bytes");
header('Content-Disposition: attachment; filename="' . $file_for_download . 
'"');
header ("Content-Range: bytes " . $p1 . "-" . $p2 . "/" . $p3);
header ("Content-Length: " . $contentSize);
header ("Content-Type: application/octet-stream");
header ("Proxy-Connection: close");
header ("");
}else {
$contentSize = $size;
header ("HTTP/1.1 200 OK");
header ("Cache-Control: None");
header('Last-Modified: ' . date('D, d M Y H:i:s \G\M\T' , $data_mod));
header ("Pragma: no-cache");
header ("Accept-Ranges: bytes");
header('Content-Disposition: attachment; filename="' . $file_for_download . 
'"');
header ("Content-Length: " . $contentSize);
header ("Content-Type: application/octet-stream");
header ("Proxy-Connection: close");
header ("");
}

fpassthru($handle);
fclose($handle);