根据表单中的行数将商品添加到购物车

Question

I am looking for a way to link the number of rows in a form to items in a simple shopping cart/checkout script.

Here is the scenario. Users are booking places at a conference. There is a three tier pricing structure, and a section of the form for each price. When the user first navigates to the booking page he is asked to add the number of people he/she wishes to book into the conference at each pricing structure. Extra rows can be added to each section of the form using javascript. Once the names/details of each person being booked in has been completed the user clicks on a 'Submit' button which submits all of the information to a MySQL Database and redirects the user to a payment page.

I would like this payment page to consist of a simple shopping cart/checkout which is automatically filled with the number of people at each rate, with the total for each rate, and a grand total. The user could then just click on a button to complete the PayPal payment.

So the parts I am stuck on is how to automatically pass the information from the forms (i.e. the number of rows (people) at each rate) to the 'checkout' page, and which script I might use to generate the checkout page.

I'd be grateful for any help to get this working,

Thanks,

Nick

Answer 1

It sounds like you have the adding of users handled, so let me touch on submitting the shopping cart. I did something similar, but created a PHP function to handle the addition of each item, which essentially echoed each product (desc, price, etc) inside a form, then simply submitted this form at the proper time to PayPal.

function FormatPaypal($iItemno, $sItemname, $iQty, $fPrice, $fDiscountAmount, $sCode)
{
    global $iUser;
$s1 = sprintf('<input type="hidden" name="item_name_%d" value="%s">', $iItemno, $sItemname); 
$s2 = sprintf('<input type="hidden" name="amount_%d" value="%.2f"> ', 
$iItemno, $fPrice); 
$s3 = sprintf('<input type="hidden" name="quantity_%d" value="%d"> ', 
$iItemno, $iQty); 

$s4 = sprintf('<input type="hidden" name="discount_amount_%d" value="%.2f">', $iItemno, $fDiscountAmount); 

$sCode = sprintf("%s-%d", $sCode, $iUser );
$s5 = sprintf('<input type="hidden" name="item_number_%d" value="%s">', $iItemno, $sCode); 

$sReturn = $s1.$s2.$s3.($fDiscountAmount ?  $s4 : '').$s5;
echo $s5;

return $sReturn;
}

which was placed inside a standard PayPal form:

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" name="frmPaypal"> <input type="hidden" name="cmd" value="_cart">

Using this method I only have to increment the $iItemNo with each use. I am currently building a PHP class to simplify this even further by managing the items and total item count, if interested I'll try to remember to come back and share it here.