ok, this all looks good, but then I again I am having a problem figuring out
that code you wrote below. the code i'm attempting to write isn't going to
be complex. there's maybe 10 or 15 items going to be sold. it would be very
rare if the customer ever had 1 or 2 things in their basket, let alone more
than that. i think i'm looking for a simpler solution. from what i had read,
though i couldn't get to work, this would be an acceptable method of
starting a sessions and trapping the variables without a million
session_register calls.
session_start();
session_register("sessvar");
$sessvar["user"]["name"] = $login_name;
$sessvar["cart"]["item1"] = $prod_id;
$sessvar["cart"]["qty1"] = $qty;
Then.. I should be able to access them like:
print "$sessvar['user']['name']";
etc...
does this make sense to you? or anyone else?
all i need is a sure fire way to easily hold a few variables throughout the
site. i'm not concerned about holding the keys in a db, as with the small
activity on this site, and the fact the writing to a local file will not
rpoduce any noticable difference over a db query on my machine w/ its
traffic, the db is not needed for this.
so.. all i need is a good simple method to register the following varables:
uid (user id)
p1 (product id for item 1)
q1 (qty for item 1)
and a method to increase the next variable to p2, q2, p3,q3 etc to represent
other items in the cart.
i think i should be able to figure out how to manipulate/extract the data
and work with it from there (in an array) once i am able to get them
registered. really i would just need a method for walking through the
array(s) to pull out the data. but if anyone has any suggestions on that too
i'd love to hear em.
thanks for the help everyone.
> > Hey,
> >
> > I'm looking for little information from those who have coded their own
shopping cart apps. what would you say the best way to setup a cart would
be? more specificly, the method for adding items to the cart.
> >
> eww, lost wrapping ...
>
> > say the user is broswing around. when they entered the website a new
session was created. when they go to add an item, what is the best way store
variables (such as what they bought and quantity) in the session. i have
read that it is possible to put all of your session variables in a single
associative array. however, i have not had any luck doing this myself. Under
such a method of an array, how would i store each item (product id and
quantity, possibly price as well) in the cart into the session. obviously i
don't expect anyone to write an entire app. i am comfortable starting the
session, and doing th db extraction and presentation. i just need to know
how to store a variable in a session (passed through post) and how to
extract it when need be (considering it is an array). Thanks a lot!
>
> I codded a shopping cart which allowed `thin sessions' and `fat sessions'.
>
> Thin would mean I store only the IDs, then retrieve the rest of the
> information about the product from the DB (more DB queries, but smaller
> session data), while `fat' would mean I store all the data I need to
display
> when the user invetories his/her cart, namely name, price &|short desc.,
> quantity.
>
> Some code snippets would be:
>
> if (!$SES->isRegistered ('cart.object')) {
> $CART = new Cart();
> $CART->setLanguage (CART_LANGUAGE);
> $SES->setAttribute ('cart.object', $CART);
> }
>
> $CART = &$SES->getAttribute ('cart.object');
>
> then go ahead and use the cart object:
> ...
> $CART->addItem ($sku, 1, new Product($arr_attr));
> $CART->dropItem ($sku);
>
> And the Product class has among others, these two methods:
>
> __setStorageType ($t)
>
> if ($t == CART_FAT_SESS) {
> $this->_slots = array_keys (get_object_vars ($this));
> unset ($this->_slots['_desc']);
> }
> }
>
> function __sleep ()
> {
> return (isset ($this->_slots) ? $this->_slots : array ('_quant'));
> }
>
> This is in the manner of Session class from PHPLIB which records what is
to
> be saved in the session (in this case, what attributes.)
>
> And the Cart class has:
>
> function __wakeup ()
> {
> if ($this->STORAGE == CART_THIN_SESS) {
> $pr_attrs = Cart::getItemsAttr (array_keys($this->_items));
>
> foreach ($pr_attrs as $sku => $attrs) {
> $attrs['quant'] = $this->_items[$sku]->getQuantity();
> $this->_items[$sku] = new Product ($attrs);
> }
> }
> }
>
> Note that __sleep() and __wakeup() are PHP serialisation hooks, which can
customize
> the marshalling/unmarshalling process (e.g. restore DB connections, etc.)
>
> cheers,
>
> -- teodor
>
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