Dreamweaver8, MySQL....

Question

Hey guys i need your help please, i'm in a bit of confused.
I'm building a vehicle rental system and I have created a database
using MySQL that i'm successfully connecting to through dreamweaver
8
I have the following at the moment :
select Location (list/menu)
Rental Length(Days) (text field)
select Vehicle category (list/menu)
(Submit)
Quotation Result (See question below)
1-Locations are in the database and i can access database
without problems
2-Rental length is where a user enters number of days(NB
there's no field in database associated with this)
3-Vehicle categories are stored in the database and they are
A-E and within the same table i've got a Daily rate field where
i've different rates for each category eg A=$40, B=55 etc
Now my problem:
Through dreamweaver8 How can make the quotation result
display when user presses submit button.
The result should be category's daily rate * number of days
entered.
Please Help!!

Answer 1

Hi,
a multiplication of both fields as such is fortunately quite
easy to achieve -- on the next page insert the following PHP
snippet somewhere on top:
<?php
// multiply vehicle_category * rental_length
$a = $_POST['vehicle_category'];
$b = $_POST['rental_length'];
$result = $a * $b;
?>
and later "echo" the result like this:
Result: <?php echo $result; ?> USD
This will of course only work when the "value" parameters of
your "vehicle_category" menu are actually passing numbers (e.g. 40)
-- if this menu is passing the values A-E instead, you´ll need
to define a separate query on the results - page like...
"SELECT vehicle_price FROM table_name WHERE
vehicle_category...." matches the received menu value (A-E).
In this case the variable $a mentioned above will need a
reference to the query, like :: $a = $queryname['vehicle_price'];
Does this help ?