Re: [PHP] Form Process Question

At 11:03 AM -0400 6/16/09, Gary wrote:
>I have a client that I have made some forms for.  On one of the forms, their
>customers are to registar for a class.  The cost of the class is 195 per
>person.  She would like to have the people be able to have the total cost
>calculated for them before they submit the form. (I already have the cost
>calculated in the email and result page).
>
>I thought about creating a separate form within the original form page that
>could calculate the cost, and process it to itself, I suppose I would need
>to create a session so all the information in the first form is not wiped
>out.
>
>Is there an easier way to do this or is there a way to create this
>calculator that changes upon the input instead of clicking a calculate
>button?
>
>Thanks
>
>Gary

Gary:

You could send everything to another form to show the totals, but 
that's not the most user friendly.

The way I would do it is via javascript, like so:

http://webbytedd.com/c/form-calc/

This populates the totals on the fly so that the customers see's the 
total as they pick things.

Of course, you still must: 1) re-evaluate what the use submits on the 
server-side (i.e., never trust client-side for anything); 2) In case 
that the user does not allow javascript to work, then you have to 
plan for that and do it on the server-side anyway for graceful 
degradation.

Cheers,

tedd


-- 
-------
http://sperling.com  http://ancientstones.com  http://earthstones.com