Variable variables

Like this:
I set a cookie to know whti items the visitor has seen
SetCookie("SeenItem$id3",$id3,time()+72000,"/saljnat","www.eye-q.nu",0);

This could set the name of the variable to
$SeenItem100 and the value to 100.

Then i need to compare the value to the id of the fetced items in a loop.

I did like this.

$seen="SeenDiscitem$id";
$seen="$$seen";
IF ($seen != "$id") $new="<img src=\"gfx/new.gif\">";

But it always evaluates to true on the first loop and false on the rest.

Did you try printing the content of all the variables ;
print $seen;
print $$seen;
print "$$seen";
print $id;

so you can see just what it is you are comparing?

Found it.
I have to unset($new);
After each iteration otherwise it will be set on the next iteration even if the IF evaluates to false.

Maybe you could put in an "else"

if (this==that)
{
$new=value;
}
else
{
$new=nothing;
};