Posted by Pasquale on 09/08/05 06:32

Snippets of code below...

I have created a registration system which allows athletes to register
for more than one event at a time. There is a details page where they
can choose different merchandise for each event and their totals are
dynamically updated accordingly, as well as their grand total. I have
created blank hidden fields to be used for the JavaScript calculations
and to POST the totals with PHP. Before the details page there is a
personal information page and the selected events, and I would like to
carry that information through this process using sessions. However,
when I use sessions the hidden field values that are dynamically, and I
guess virtually, filled in with JavaScript POST their initial blank
value instead of the calculated totals. Without sessions they POST fine.

Is there a way to use sessions this way?

For now I am going to try POSTing the information to an interim page
with all the hidden fields I need and they will have their initial value
and then redirect to the next page, which is where I will start my session.

Thanks.

details page...

#at the top
session_start();
header("Cache-control: private");

$fname = isset($_POST['fname'])?$_POST['fname']:$_SESSION['fname'];
$lname = isset($_POST['lname'])?$_POST['lname']:$_SESSION['lname'];

$_SESSION['fname'] = $fname;
$_SESSION['lname'] = $lname;



<snip>
JavaScript

<!--Begin
function GrandTotalCal () {
var gtotalowing = 0;
var seidsfld = document.forms[0].elements['regsubevtarrayfld'];
var subevtarray = seidsfld.value.split(",");
for (i = 0; i < subevtarray.length; i++) {
var setotalhdn = "se"+subevtarray[i]+"totalhdn";
gtotalowing += parseInt(document.forms[0].elements[setotalhdn].value);
}
document.getElementById('gtotalcost').innerHTML = '$' + gtotalowing +
'.00';
document.forms[0].elements['gtotalhdn'].value = gtotalowing;
}
//--End-->


HTML

<SPAN id="gtotalcost" class="prices">0</SPAN>
<INPUT type="hidden" name="gtotalhdn" value="" />

</snip>

top of next page...
<snip>

session_start();
header("Cache-control: private");

$gtotalhdn =
isset($_POST['gtotalhdn'])?$_POST['gtotalhdn']:$_SESSION['gtotalhdn'];

$_SESSION['gtotalhdn'] = $gtotalhdn;

</snip>

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