get parameter from remote site

[dime_f]

Hello i have a problem and i hope that somebody can help me.

 

i work on project banner manager. i have owners who get banner with this code:

 

a href="http://localhost/click.php?site_id=1"

img src="http://localhost/picture.php?site_id=1" alt="server not started" /a

 

image tag is associated with php file who generate picture with this code:

 

$image_path = $row[0];

$fp=fopen($image_path,'rb');

$data=fread($fp,filesize($image_path));

echo $data;

 

when some visitor click on banner i want to increment banner clicks in click.php but i dont know how to recognize

banner id. Banners generates random and some time visitor see ex. banner1, other visitor see banner2.

how can i get banner id's for same site, if at one moment ex. 10 visitors see same site with diferent banners.

 

any ideas? (sorry for my bad english)

 

Regards