I wonder if it is possible to send text file which is just at this moment prepared and it would be best if the file coud be send without creating on disc.
For example I would like to have on my web
<a href="day.php">this day</a>
and when you click on this link day.php starts sending file day.txt which wil contain only one line with "monday" or "tuesday" etc. So browser will ask where you want to save this file. Is it possible to even send file day.txt without creating it on server?