Creating temporary csv download link PHP

Creating temporary csv download link PHP

I have the following PHP code to take a multidimensional array and output
it to a file in my php page's directory. This works great.
I'm looking for a solution to create a temporary download link on the page
that this code resides on, so that the user can choose to click the link
or not, and the file is deleted when the page is closed, or some fixed
time.
I haven't found a good example of how to implement this on a temporary
basis. using tmpfile() seems to not allow me to create a .csv file (it's
just .tmp), and I'm not even sure if the file would exist after the page
loads (long enough for the user to download).
Also, a lot of examples assume that the information is already coming in
via $_POST. The page that my code resides on is already the target from a
previous POST action. I'm not sure how I'd get the data from the $results
array over to a theoretical download.php file.
I'm at a bit of a crossroads, and my specific question doesn't seem to
duplicate anything I've found on SO today. Ideas? (NOTE: The array of
blanks just acts as a separator for each set of values)
$fp = fopen('file.csv','w');
foreach ($results as $arrays){
foreach ($arrays as $fields) {
fputcsv($fp, $fields);
}
$blanks = array(' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ','
',' ',' ',' ');
fputcsv($fp, $blanks);
}
fclose($fp);