Passing a number between pages

richard-elland

I cant get this to work. I dont want to learn PHP or Javascript beyond what I need, but this is what I've got so far.
I collect some information in a form. I use javascript to do a calculation arriving at a variable called grandtotal which contains a numeric value.
The form action is to run formmail.php. Also in the form is a hidden input tag which redirects to page 2.
The redirect is as follows

http://www.mysite.org.uk/page_2.html?total=grandtotal

When page 2 appears the address shows this plus some code added by formmail.php

?total=grandtotal&PHPSESSID=8e5b2d6367964a597d0b171a5477f179

I want to collect the value which is either in total or grandtotal - I dont understand which.
Please please please - exactly how do I do this??
I have tried variations on

<?PHP
$total = $_GET['grandtotal']
?>

I then need to process the number that hopefully arrives into a javascript variable called amount which PayPal will accept as part of a payment button. I know this bit works if I set amount manually.
Help me - I looked, searched and tried allsorts but am getting more confused.
Many many thanks

dagon

need to see the php

richard-elland

Its bog standard formmail.php

paulnaj

I don't think Dagon was expecting to debug formmail.php.

The problem is that you need to know more PHP/javascript than at present.

First of all, you say...

I use javascript to do a calculation arriving at a variable called grandtotal which contains a numeric value.

... but don't say EXACTLY what you do with that numeric value.

If, in the address bar you see:

http://www.mysite.org.uk/page_2.html?total=grandtotal (or something like it)

then,

You are sending parameters to an HTML file, not a php file (unless of course the server is configured to process html files as php).
Even if you can process html files as php files, the GET variable called 'total' will contain the word 'grandtotal' - not what you want.

So, best post up your form and any javascript so that people can SEE what you're doing, rather than having to guess.