php readfile() function on windows 2008

Something might be amiss with the headers -- on my machine it did not recognize an image.  It thought it was trying to download a PHP file. Can you please post the rest of the download script?

Tks guys.

The v1.ativo.com DNS record was recently updated. It should point to 209.17.171.46. Please check if your DNS is up to date. You´ll get a 404 error on the old server.

I´ve attached the complete code bellow. It receives a file name on the url, and send the image as an attachment to the user browser, this way the user saves the file, instead of the browser displaying it.  This code has worked for years.

Thanks for the help

<?php
//---------------------------------------------------------------------------------
// Complete code
//  Intercode
//  Arquivo: download_foto.php
//  Propósito: Faz o download do Arquivo solicitado
//---------------------------------------------------------------------------------
session_start();
include('fotos_config.php');
set_time_limit(0);
 
if (! $_GET['arquivo']){
        $erro .= "Arquivo não informada<br>";
} else {
        $arquivo = $_GET['arquivo'];
}
 
 
if ($arquivo){
        $arq = "$hard_path\\$arquivo";
 
        if (file_exists($arq)){
 
                header("Pragma: public");
                header("Expires: 0");
                header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
                header("Cache-Control: private",false);
                header("Content-Type: image/jpeg");
                header("Content-Type: application/force-download");
                header("Content-Disposition: attachment; filename=\"".basename($arq)."\";");
                header("Content-Transfer-Encoding: binary");
                header("Content-Length: ".@filesize($arq));
                set_time_limit(0);
                readfile("$arq") or die("File not found.");
 
 
        } else {
                $erro = "Arquivo " . $arq . " não está mais disponível para download.";
        }
} else {
        $erro = "Arquivo não encontrado.";
}
 
if ($erro) echo $erro;
 
?>

                                              

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This is still 404:
http://v1.ativo.com/img_campanhas/volks_2008/rds_2474.jpg

But see the code snippet.  Perhaps that will provide some inspiration.

best, ~Ray

<?php // RAY_force_download
 
function force_download($filename) {
	header("Content-Type: application/force-download");
	header("Content-Disposition: attachment; filename=\"$filename\"");
	header("Content-length: ".(string)(filesize($filename)));
	header("Expires: ".gmdate("D, d M Y H:i:s", mktime(date("H")+2, date("i"), date("s"), date("m"), date("d"), date("Y")))." GMT");
	header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
	header("Cache-Control: no-cache, must-revalidate");
	header("Pragma: no-cache");
	echo file_get_contents($filename);
}
 
force_download("http://v1.ativo.com/img_campanhas/volks_2008/rds_2474.jpg");
 
?>

                                              

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Hi Ray, thank you.

No, it didn't work, I got the same results.

You can check it using the link on the question, it is using your force_download() function now, but it just stops near the end of the file.

Anyone has any other ideias? Maybe a PHP bug on windows2008?

[]s

Hi, vetrixicode: I just copied the code snippet out of my last post, stored it on my server (Linux) and ran it over the WWW from this desktop computer (WinXP).  

It downloaded the JPG perfectly.  I opened it in Photoshop and it looks fine - Adobe RGB colors.  I like that running outfit!

So the information is accessible over the www, and the data comes through to this machine intact.  That suggests that the download script is OK and the file is OK.  But it does not isolate the issue completely.  It could still be on the server or the client - both are on your end.  Maybe you can try running my stored copy of this script (from the Linux server) and see if it works for you.  If so, I would look toward the Windows server.  If not, it may be your client machine.  That's not a foolproof test, but the evidence will be useful.  Here is the URL:

http://www.laprbass.com/RAY_temp_vertixicode.php

Best regards, ~Ray

Hmm... Interestingly EE's file uploader does not identify this as a JPG  (Possible File Type Mismatch).  Perhaps there is something about the file that is acceptable to Linux and Photoshop, but gives Windows a problem?  I clicked on the uploaded image in my post above and it came through fine.

What next?

Hi Ray.

Both of your links worked, I've downloaded the image completely, BUT the image is not my image, it's a black BG with a red "INVALID IMAGE" text on it.

It still works fine for me.  This time I saved it as a compressed JPG before uploading.

So I am guessing that the issue may be isolated to your local ISP, server, or computer, maybe?  Can you test it from another Mac or PC, or via a different pipe to the internet?

Best regards, ~Ray

I'm gonna try it at home.
Thank you.
[]s

Makes sense; Let us know what you find.  Best regards, ~Ray

Hi Ray.

I got the same results at home. I also tried several different pcs at the office, it doesn't work.
It just stops downloading.

What else can I do?

Thanks

Do you and your office both use the same Internet Service Provider?

We tried to d/l in Safari on a Mac and it said, "Could not open the file, it may be corrupt or a format that Preview doesn't recognize".

We also tried it on a WinXP machine at a different ISP.  My colleague said, "It did not work for me. I tried both to open and then save to the desktop and open. It saved to my desktop but it wouldn't open."

So maybe I am the only one who can deal with it??  Anyway, the evidence is beginning to look like the file is defective in some way.

Hi Ray.

My office and home are on different ISPs.
It's strange... it happens to all my files (several thousand) , and the thing is, the same files used to work just fine on my old win 2003 server.
And if the problem was on the file, it wouldn't work on the direct link (without the readfile() function), right? The direct link does work. ( http://v1.ativo.com/img_campanhas/volks_2008/rds_2474.jpg )

Well, the direct link works for ME and for YOU, so I will ask some colleagues on different platforms to test the direct link.  I am also asking them to test this revised script.  I'll post back here as the results come in.

Best regards, ~Ray

<?php // RAY_force_download
 
function force_download($filename)
{
   $basename = basename($filename);
   $filedata = file_get_contents($filename);
 
   if ($filedata)
   {
      header("Content-Type: application/force-download");
      header("Content-Disposition: attachment; filename=\"$basename\"");
      header("Content-length: ".(string)(strlen($filedata)));
      header("Expires: ".gmdate("D, d M Y H:i:s", mktime(date("H")+2, date("i"), date("s"), date("m"), date("d"), date("Y")))." GMT");
      header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
      header("Cache-Control: no-cache, must-revalidate");
      header("Pragma: no-cache");
      flush();
 
      echo $filedata;
   }
}
 
force_download("http://v1.ativo.com/img_campanhas/volks_2008/rds_2474.jpg");
 
?>

                                              

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We are able to open the file directly and with the script above on a Safari browser on a Mac.  You might want to try running that new script on your Windows server.  So far, it looks like it works on a Linux server.  Nothing in the notes on PHP.net gave me a clue about any known differences.

Script also works on WinXP and WinVista with IE and FF.  So if this new script does not work for you, it looks like we may have a bug in Windows 2008.  You can test the script from my Linux machine here:

http://www.laprbass.com/RAY_temp_vertixicode.php

HTH, ~Ray

Hi Ray

I've updated the function force_download(), but same results again...  it stops.

http://v1.ativo.com/volks_2008/download_foto.php?arquivo=rds_2474.jpg

Thanks

I just used your link and downloaded exactly the same file as I downloaded yesterday, using my link (one post above).  The files match precisely, bit-for-bit.  In other words, it works.

However it took a VERY long time to download, and the phenomenon was repeatable.  I timed it and it took 2:15 to D/L when running the script from v1.ativo.com.  In contrast, it took 0:04 when running the script from www.laprbass.com.

Even over HTTP, a 700K image file should download in a matter of a few seconds, at most.  I wonder if there is something about the client on your end that is less patient than my client machine?  The image came from your server and worked successfully here, whether the script ran on your server or on my server.  The only difference was the huge D/L time from v1.ativo.com

Can you get the script at www.laprbass.com to work correctly?

Best regards, ~Ray

Hi Ray, sorry it tookme too long to reply, I was out of town for several days.

Your download was steadly slow, or it was fast at the begining and slow at the end?

What should I test on www.laprbass.com ? PDFs downloaded just fine.

Thanks

From the post above... Try this:
http://www.laprbass.com/RAY_temp_vertixicode.php

There is no way for me to know whether the D/L was steadily slow, etc.  It was fast from my server, and slow from ativo.

The link you've sent me worked perfectly, it took me about 3 seconds.

What I meant is, when you downloaded the the file from v1.ativo.com it took 2:15, right? Whatching the download progress bar, can you notice any speed changes?  Or the progress bar starts slow, and goes slow to the end?

thanks for your help and persistence

hi Ray, I'm going to give up on this for now, the project has ended. I'll look at it again when needed.

I'm giving you the points for your help and persistence.

Thank you very much