Sorry people I have put this thread in the wrong Forum, Feel free to move it if you like admin.

This is in reference to polls.

I dont want the image (dynamic via GD) to be created each time its requested. I am after cacheing via $_SESSION vars so that they just get to view the same image for a specific period of time.

So before I jump straight in I though I woulod seek the infinate wisdom of this forum and get some good direction.

Cheers Ibbo

PHP Code:

 // stage 1, poll the image cach dir for out of date images.
// set at 5 mins
$path = IMAGEDIR .'/imgcache/';
$state = false;
        
if (is_dir($path) ) {
  $handle=opendir($path);
   while (false!==($file = readdir($handle))) {
     if ($file != "." && $file != "..") { 
          $diff = (time() - filectime("$path/$file"))/60;
          // file 5 mins old or older
          // remove file set flag 
            if ($diff > 5){
               unlink("$path/$file");
              $state=true;
            }
       }
    }
    closedir($handle);
}
// flag set old image had gone
// create new.

if($state){      
 imagepng($im, IMAGEDIR .'/imgcache/'.$sessionid.'.png');
}
// no image exists
// create new.
if(!file_exists(IMAGEDIR .'/imgcache/'.$sessionid.'.png')){
 imagepng($im, IMAGEDIR .'/imgcache/'.$sessionid.'.png');
} 


Of course I use a temple so I assign the sessionid to a variable that my template will parse and display depending on your session id.

Yes sesions are required for this to work along with the filectime function.

Hope this helps anyone else who needs this, bit of a poor response.

Ibbo