I am modifying OSCommerce. By default OSCommerce updates a quantity of an item when there are multiples ordered. I wish to change this so when someone orders 2 of an item it lists it twice in the cart.
I know where the code is that needs to be changed, it is in the cart class but I do not know how to do this.
Full code listed below.
Lines 87 through to 104 manage the addition of items into the basket.
Line 87 checks to see if the item is in the cart and if it is just update the quantity. I have commented out the code so this check does not happen but the quantity still gets updated by 1.
I then noticed that the array that is created has the product ID of the item being ordered set as the key. So even if the check is removed the item id is found in the array and the quantity is updated accordingly.
Now my knowledge of arrays gets a little fuzzy here, I presume what I need to do is give each line item in the cart a unique index id in the array and assign ProdID and QTY to the index key.
My problem is two fold.
A) Am I right in what I am thinking.
B) If I am right how do I do this.
I have read the manual pages for PHp regarding arrays but I am still slightly clueless but I did manage to figure out what I think the problem is! Could someone please help.
The full class code:
Code: Select all
<?php
/*
$Id: shopping_cart.php,v 1.35 2003/06/25 21:14:33 hpdl Exp $
osCommerce, Open Source E-Commerce Solutions
http://www.oscommerce.com
Copyright (c) 2003 osCommerce
Released under the GNU General Public License
*/
class shoppingCart {
var $contents, $total, $weight, $cartID, $content_type;
function shoppingCart() {
$this->reset();
}
function restore_contents() {
global $customer_id;
if (!tep_session_is_registered('customer_id')) return false;
// insert current cart contents in database
if (is_array($this->contents)) {
reset($this->contents);
while (list($products_id, ) = each($this->contents)) {
$qty = $this->contents[$products_id]['qty'];
$product_query = tep_db_query("select products_id from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
if (!tep_db_num_rows($product_query)) {
tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET . " (customers_id, products_id, customers_basket_quantity, customers_basket_date_added) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id) . "', '" . $qty . "', '" . date('Ymd') . "')");
if (isset($this->contents[$products_id]['attributes'])) {
reset($this->contents[$products_id]['attributes']);
while (list($option, $value) = each($this->contents[$products_id]['attributes'])) {
tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " (customers_id, products_id, products_options_id, products_options_value_id) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id) . "', '" . (int)$option . "', '" . (int)$value . "')");
}
}
} else {
tep_db_query("update " . TABLE_CUSTOMERS_BASKET . " set customers_basket_quantity = '" . $qty . "' where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
}
}
}
// reset per-session cart contents, but not the database contents
$this->reset(false);
$products_query = tep_db_query("select products_id, customers_basket_quantity from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "'");
while ($products = tep_db_fetch_array($products_query)) {
$this->contents[$products['products_id']] = array('qty' => $products['customers_basket_quantity']);
// attributes
$attributes_query = tep_db_query("select products_options_id, products_options_value_id from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products['products_id']) . "'");
while ($attributes = tep_db_fetch_array($attributes_query)) {
$this->contents[$products['products_id']]['attributes'][$attributes['products_options_id']] = $attributes['products_options_value_id'];
}
}
$this->cleanup();
}
function reset($reset_database = false) {
global $customer_id;
$this->contents = array();
$this->total = 0;
$this->weight = 0;
$this->content_type = false;
if (tep_session_is_registered('customer_id') && ($reset_database == true)) {
tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "'");
tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "'");
}
unset($this->cartID);
if (tep_session_is_registered('cartID')) tep_session_unregister('cartID');
}
function add_cart($products_id, $qty = '1', $attributes = '', $notify = true) {
global $new_products_id_in_cart, $customer_id;
$products_id = tep_get_uprid($products_id, $attributes);
if ($notify == true) {
$new_products_id_in_cart = $products_id;
tep_session_register('new_products_id_in_cart');
}
if ($this->in_cart($products_id)) {
$this->update_quantity($products_id, $qty, $attributes);
} else {
$this->contents[] = array($products_id);
$this->contents[$products_id] = array('qty' => $qty);
// insert into database
if (tep_session_is_registered('customer_id')) tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET . " (customers_id, products_id, customers_basket_quantity, customers_basket_date_added) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id) . "', '" . $qty . "', '" . date('Ymd') . "')");
if (is_array($attributes)) {
reset($attributes);
while (list($option, $value) = each($attributes)) {
$this->contents[$products_id]['attributes'][$option] = $value;
// insert into database
if (tep_session_is_registered('customer_id')) tep_db_query("insert into " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " (customers_id, products_id, products_options_id, products_options_value_id) values ('" . (int)$customer_id . "', '" . tep_db_input($products_id) . "', '" . (int)$option . "', '" . (int)$value . "')");
}
}
}
$this->cleanup();
// assign a temporary unique ID to the order contents to prevent hack attempts during the checkout procedure
$this->cartID = $this->generate_cart_id();
}
function update_quantity($products_id, $quantity = '', $attributes = '') {
global $customer_id;
if (empty($quantity)) return true; // nothing needs to be updated if theres no quantity, so we return true..
$this->contents[$products_id] = array('qty' => $quantity);
// update database
if (tep_session_is_registered('customer_id')) tep_db_query("update " . TABLE_CUSTOMERS_BASKET . " set customers_basket_quantity = '" . $quantity . "' where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
if (is_array($attributes)) {
reset($attributes);
while (list($option, $value) = each($attributes)) {
$this->contents[$products_id]['attributes'][$option] = $value;
// update database
if (tep_session_is_registered('customer_id')) tep_db_query("update " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " set products_options_value_id = '" . (int)$value . "' where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "' and products_options_id = '" . (int)$option . "'");
}
}
}
function cleanup() {
global $customer_id;
reset($this->contents);
while (list($key,) = each($this->contents)) {
if ($this->contents[$key]['qty'] < 1) {
unset($this->contents[$key]);
// remove from database
if (tep_session_is_registered('customer_id')) {
tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($key) . "'");
tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($key) . "'");
}
}
}
}
function count_contents() { // get total number of items in cart
$total_items = 0;
if (is_array($this->contents)) {
reset($this->contents);
while (list($products_id, ) = each($this->contents)) {
$total_items += $this->get_quantity($products_id);
}
}
return $total_items;
}
function get_quantity($products_id) {
if (isset($this->contents[$products_id])) {
return $this->contents[$products_id]['qty'];
} else {
return 0;
}
}
function in_cart($products_id) {
if (isset($this->contents[$products_id])) {
return true;
} else {
return false;
}
}
function remove($products_id) {
global $customer_id;
unset($this->contents[$products_id]);
// remove from database
if (tep_session_is_registered('customer_id')) {
tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
tep_db_query("delete from " . TABLE_CUSTOMERS_BASKET_ATTRIBUTES . " where customers_id = '" . (int)$customer_id . "' and products_id = '" . tep_db_input($products_id) . "'");
}
// assign a temporary unique ID to the order contents to prevent hack attempts during the checkout procedure
$this->cartID = $this->generate_cart_id();
}
function remove_all() {
$this->reset();
}
function get_product_id_list() {
$product_id_list = '';
if (is_array($this->contents)) {
reset($this->contents);
while (list($products_id, ) = each($this->contents)) {
$product_id_list .= ', ' . $products_id;
}
}
return substr($product_id_list, 2);
}
function calculate() {
$this->total = 0;
$this->weight = 0;
if (!is_array($this->contents)) return 0;
reset($this->contents);
while (list($products_id, ) = each($this->contents)) {
$qty = $this->contents[$products_id]['qty'];
// products price
$product_query = tep_db_query("select products_id, products_price, products_tax_class_id, products_weight from " . TABLE_PRODUCTS . " where products_id = '" . (int)$products_id . "'");
if ($product = tep_db_fetch_array($product_query)) {
$prid = $product['products_id'];
$products_tax = tep_get_tax_rate($product['products_tax_class_id']);
$products_price = $product['products_price'];
$products_weight = $product['products_weight'];
$specials_query = tep_db_query("select specials_new_products_price from " . TABLE_SPECIALS . " where products_id = '" . (int)$prid . "' and status = '1'");
if (tep_db_num_rows ($specials_query)) {
$specials = tep_db_fetch_array($specials_query);
$products_price = $specials['specials_new_products_price'];
}
$this->total += tep_add_tax($products_price, $products_tax) * $qty;
$this->weight += ($qty * $products_weight);
}
// attributes price
if (isset($this->contents[$products_id]['attributes'])) {
reset($this->contents[$products_id]['attributes']);
while (list($option, $value) = each($this->contents[$products_id]['attributes'])) {
$attribute_price_query = tep_db_query("select options_values_price, price_prefix from " . TABLE_PRODUCTS_ATTRIBUTES . " where products_id = '" . (int)$prid . "' and options_id = '" . (int)$option . "' and options_values_id = '" . (int)$value . "'");
$attribute_price = tep_db_fetch_array($attribute_price_query);
if ($attribute_price['price_prefix'] == '+') {
$this->total += $qty * tep_add_tax($attribute_price['options_values_price'], $products_tax);
} else {
$this->total -= $qty * tep_add_tax($attribute_price['options_values_price'], $products_tax);
}
}
}
}
}
function attributes_price($products_id) {
$attributes_price = 0;
if (isset($this->contents[$products_id]['attributes'])) {
reset($this->contents[$products_id]['attributes']);
while (list($option, $value) = each($this->contents[$products_id]['attributes'])) {
$attribute_price_query = tep_db_query("select options_values_price, price_prefix from " . TABLE_PRODUCTS_ATTRIBUTES . " where products_id = '" . (int)$products_id . "' and options_id = '" . (int)$option . "' and options_values_id = '" . (int)$value . "'");
$attribute_price = tep_db_fetch_array($attribute_price_query);
if ($attribute_price['price_prefix'] == '+') {
$attributes_price += $attribute_price['options_values_price'];
} else {
$attributes_price -= $attribute_price['options_values_price'];
}
}
}
return $attributes_price;
}
function get_products() {
global $languages_id;
if (!is_array($this->contents)) return false;
$products_array = array();
reset($this->contents);
while (list($products_id, ) = each($this->contents)) {
$products_query = tep_db_query("select p.products_id, pd.products_name, p.products_model, p.products_image, p.products_price, p.products_weight, p.products_tax_class_id from " . TABLE_PRODUCTS . " p, " . TABLE_PRODUCTS_DESCRIPTION . " pd where p.products_id = '" . (int)$products_id . "' and pd.products_id = p.products_id and pd.language_id = '" . (int)$languages_id . "'");
if ($products = tep_db_fetch_array($products_query)) {
$prid = $products['products_id'];
$products_price = $products['products_price'];
$specials_query = tep_db_query("select specials_new_products_price from " . TABLE_SPECIALS . " where products_id = '" . (int)$prid . "' and status = '1'");
if (tep_db_num_rows($specials_query)) {
$specials = tep_db_fetch_array($specials_query);
$products_price = $specials['specials_new_products_price'];
}
$products_array[] = array('id' => $products_id,
'name' => $products['products_name'],
'model' => $products['products_model'],
'image' => $products['products_image'],
'price' => $products_price,
'quantity' => $this->contents[$products_id]['qty'],
'weight' => $products['products_weight'],
'final_price' => ($products_price + $this->attributes_price($products_id)),
'tax_class_id' => $products['products_tax_class_id'],
'attributes' => (isset($this->contents[$products_id]['attributes']) ? $this->contents[$products_id]['attributes'] : ''));
}
}
return $products_array;
}
function show_total() {
$this->calculate();
return $this->total;
}
function show_weight() {
$this->calculate();
return $this->weight;
}
function generate_cart_id($length = 5) {
return tep_create_random_value($length, 'digits');
}
function get_content_type() {
$this->content_type = false;
if ( (DOWNLOAD_ENABLED == 'true') && ($this->count_contents() > 0) ) {
reset($this->contents);
while (list($products_id, ) = each($this->contents)) {
if (isset($this->contents[$products_id]['attributes'])) {
reset($this->contents[$products_id]['attributes']);
while (list(, $value) = each($this->contents[$products_id]['attributes'])) {
$virtual_check_query = tep_db_query("select count(*) as total from " . TABLE_PRODUCTS_ATTRIBUTES . " pa, " . TABLE_PRODUCTS_ATTRIBUTES_DOWNLOAD . " pad where pa.products_id = '" . (int)$products_id . "' and pa.options_values_id = '" . (int)$value . "' and pa.products_attributes_id = pad.products_attributes_id");
$virtual_check = tep_db_fetch_array($virtual_check_query);
if ($virtual_check['total'] > 0) {
switch ($this->content_type) {
case 'physical':
$this->content_type = 'mixed';
return $this->content_type;
break;
default:
$this->content_type = 'virtual';
break;
}
} else {
switch ($this->content_type) {
case 'virtual':
$this->content_type = 'mixed';
return $this->content_type;
break;
default:
$this->content_type = 'physical';
break;
}
}
}
} else {
switch ($this->content_type) {
case 'virtual':
$this->content_type = 'mixed';
return $this->content_type;
break;
default:
$this->content_type = 'physical';
break;
}
}
}
} else {
$this->content_type = 'physical';
}
return $this->content_type;
}
function unserialize($broken) {
for(reset($broken);$kv=each($broken);) {
$key=$kv['key'];
if (gettype($this->$key)!="user function")
$this->$key=$kv['value'];
}
}
}
?>