Simple Session Question.

[foamy]

I want a form variable $coupon to persist after a user enters the value in the form and clicks submit.

If I register the variable first, then it can't be overridden by the form.

If I submit the variable as $coupon_check, then check the submitted form with something like

if ($submit)
{
if ($coupon_check == "foobar")
{
session_start ();
session_register ('coupon');
$coupon = ('foobar');
}
else
{
redisplay the form with a message saying the value entered was incorrect.
}
}

in this case $coupon is registered as foobar, but it isn't passed on to subsequent pages when I check with
<? echo $coupon ?>

Any ideas what I'm doing wrong, or a better way to approach this?

[junebug]

session_start();
$coupon = 'foobar';
session_register("coupon");

you have to set the value before you register it.

[Anon]

i remember having similar problems experiment with the isset() function?

kind regards

Paul