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Content disposition

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Content disposition PHP Development forum to discuss anything related to developing applications in PHP. Topics include architecture, coding standards, and debugging methods.

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  #1  
Old October 22nd, 2004, 03:12 PM
Dhruv Dhruv is offline
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Content disposition
Hi

I've been trying to understand how to force a user to download a file. What i've done is save a bunch of rows from the DB into a variable called $data.

From here, I tried to study how the header actually works.

http://uk2.php.net/manual/en/function.header.php

I'm adding these lines to the function.. so basically my function is now

PHP Code:
function XYX()
{
 
$data = "some large data string..";
 
header("Content-Type: text/x-delimtext; name=\"filename.sql\"");
header("Content-disposition: attachment; filename=filename.sql");
 
echo $data;
} 

But the browser doesnt seem to force the user to download it. I dont understand what it is that i'm doing wrong. Could someone please help?

cheers!
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  #2  
Old October 23rd, 2004, 06:49 AM
kode_monkey kode_monkey is offline
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What do you mean by 'force them to download it'? Do you want it to open the usual download options dialog when the page opens or just start downloading without consulting the user?

-KM-
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  #3  
Old October 23rd, 2004, 08:40 AM
digitallysmooth digitallysmooth is offline
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http://us2.php.net/manual/en/function.header.php

Essentially, your header will look something like the following:
Code:
             header("Content-disposition: attachment; filename=/real/path/to/filename.sql");
             header('Expires: Mon, 26 Nov 1962 00:00:00 GMT');
             header("Last-Modified: " . gmdate("D,d M Y H:i:s") . " GMT");
             header('Pragma: no-cache');

or for IE :
Code:
 
             header("Content-disposition: attachment; filename=/real/path/to/filename.sql");
             header('Expires: Mon, 26 Nov 1962 00:00:00 GMT');
             header("Last-Modified: " . gmdate("D,d M Y H:i:s") . " GMT");
             header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
             header('Pragma: public');
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  #4  
Old January 14th, 2005, 07:44 AM
Raya Raya is offline
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Smile What is the effect of this header ?
Is the source you wrote laidbak have the effect of opening a "download window" and is this work for opening a file for download from FTP server?


Thanks, R.
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  #5  
Old January 14th, 2005, 01:50 PM
digitallysmooth digitallysmooth is offline
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Quote:
Is the source you wrote laidbak have the effect of opening a "download window"
Yes, this will effectively force the browser to see this file as a stream of input and download it as a file.

This is commonly used to serve a files that you would like to keep out of your document root.

Quote:
and is this work for opening a file for download from FTP server?
If you are serving an ftp file, you do not need to protect the file by wrapping it in a routine such as this. You could simply provide an ftp link right to the file.

If the ftp has password protection, and you are not willing to give up the username/password combo, then this is probably not the correct approach.
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  #6  
Old January 17th, 2005, 06:22 AM
Raya Raya is offline
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Well yes the FTP server has username and password but I pass them like this :

ftp://username:_password@ftp/some_folder/some_file.mp3

it this OK ?



thanks
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  #7  
Old January 17th, 2005, 03:11 PM
digitallysmooth digitallysmooth is offline
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This is fine if you don't care that you are sharing your username/password with whomever.
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  #8  
Old January 18th, 2005, 05:18 AM
mattp23 mattp23 is offline
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Quote:
Originally Posted by laidbak
This is fine if you don't care that you are sharing your username/password with whomever.

FTP is insecure anyway, sending the username/password in plain text, it wouldn't be hard for some packet sniffer or whatever to grab the passwords.
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  #9  
Old January 18th, 2005, 09:01 AM
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It's still much easier to get the username/password when its BLATANLY DISPLAYED IN THE URL... =)
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  #10  
Old January 18th, 2005, 09:30 AM
mattp23 mattp23 is offline
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Quote:
Originally Posted by MadCowDzz
It's still much easier to get the username/password when its BLATANLY DISPLAYED IN THE URL... =)

Is true but there are many people who seem to think that protocols like FTP, POP, IMAP etc are secure!
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