run script after file download

[geebers]

i need my php script to exectute once a file has been requested/downloaded by anyone. I'm new to apache config. Perhaps there's a directive for this? thanks for any help.

 

[geebers]

Here's what I've setup.....

in httpd.conf ive added:
<IfModule actions_module>
Action image/jpg /cgi-bin/myscript.cgi
</IfModule>

myscript.cgi looks like:
#!/bin/sh
echo "Success" >/opt/lampp/htdocs/project/success.txt

can't seem to write success.txt when a jpg image is requested.
BTW, i'm running latest version of xampp on linux.
Thanks for any help