ShoppingCart

[michibk]

Hi,
I did a search before sending this topic:-)
I want to implement a shopping cart based only in sessions. if it is possible NO databases and no cookies.
i reached the point where i could register all the desired data in the session.
My problem now is,that i don't know exactly what to do right now :

• How can I delete or modify the data (quantity of an item) in the cart
• How can I combine the item_id's stored in the session (with unserialize i got an array with all item_id's) with the desired data in the database
• Have I to define a class?

Any idea????


Thanks

Mike

[Anon]

you don't need classes for implementing a shopping cart.

store the item id and quantity in an array - you've already done that, I think. serialize the array -> session_register it -> session_unregister it.

if you want wo delete/modify the data, modify the array and session_register it again.

if the article ids in the array are the same ids you have in your products table, you can simply generate an sql query like this.

say:
$cart[0]['id_product'] == 12
$cart[0]['quantity'] == 2
$cart[1]['id_product'] == 34
$cart[1]['quantity'] == 1
(...)

in order to create a list of the items in cart:

for($i=0; $i<count($cart); $i++)
{
$sql = "select name,price from product where id=".$cart[$i]['id_product'];

// now do the query
// and display the row for the item
// calculate the price := database price per unit * $cart[$i]['quantity']
}

I hope that gets you along.

[Anon]

"store the item id and quantity in an array - you've already done that, I think. serialize the array -> session_register it -> session_unregister it."

that's rubbish, I meant:
"store the item id and quantity in an array - you've already done that, I think. serialize the array -> session_register it -> UNSERIALIZE it."

sorry

[michibk]

thanks -
another problem i have :-)=
i only stored the item_id in a session, not
the quantity.
how can i store this two values in one array
in a session? i only got it with one value!

mike