How to upload files to user.

[ansuz]

Hi,

I have a button that's uploading a CSV file to the user when it's pressed. The user can save the file, but there is a problem when opening it: the file contains the whole html page, including my CSV data. I'm trying to figure why.

Here's a rough outline of my code. My index.php looks like this:

ob_start();
// html stuff
if ($_POST[csv_button]) generate_csv();
ob_end_flush();

In my index.php, I also defined the generate_csv function:

ob_start();
// print mime header
// generate csv data
ob_end_flush();

Do I really need to create a separate php file to do the file transfer? I know this method works. Everybody seems to be doing that. I'd really like to know if I can embed this task into an existing file rather than creating a new one.

All help is welcome!

[tsinka]

Hi,

use exit to make sure that only the csv data is sent and move that code on top of the script before any output is created:

if (isset($_POST[csv_button])) {
  //send header(s)
  ob_start(); 
  // html stuff 
  generate_csv(); 
  ob_end_flush(); 
  exit;
}

I'd suggest to change generate_csv() so that it rather returns the csv data than printing it.

if (isset($_POST['csv_button'])) {
  //send header(s)
  echo generate_csv(); 
  exit;
}