function add_items_to_cart($id, $count)
{
if (empty($_SESSION['simple_cart']) || !isset($_SESSION['simple_cart'])) {
$c = new Cart();
$c->add_item($id, $count);
$_SESSION['simple_cart'] = $c;
} else {
$_SESSION['simple_cart']->add_item($id, $count);
}
}
public static function create_from_signup($signup, $note = "")
{
$hash = self::hash_items($signup);
$cart = Cart::find("carts.hash = '{$hash}' AND carts.hash IS NOT NULL");
if ($cart) {
return $cart;
}
$cart = new Cart();
$cart->user_id = $signup->user->id;
$cart->note = $note;
$cart->hash = $hash;
if ($cart->save()) {
// Add Signup
$added = false;
if (!$signup->paid) {
$cart->add_item($signup);
$added = true;
}
foreach ($signup->event_services() as $service) {
if (!$service->paid) {
$cart->add_item($service);
$added = true;
}
}
$cart = Cart::find_by_id($cart->id);
if ($added) {
return $cart;
} else {
$cart->destroy();
return false;
}
}
return false;
}
function remove_item($artnr, $num)
{
if ($this->items[$artnr] > $num) {
$this->items[$artnr] -= $num;
return true;
} else {
return false;
}
}
}
?>
<?php
error_reporting(E_ALL & ~E_NOTICE);
$cart = new Cart();
$cart->add_item("10", 1);
$another_cart = new Cart();
$another_cart->add_item("0815", 3);
?>
<?php
// correct, single $
$cart->items = array("10" => 2);
var_dump($cart->items);
// invalid, because $cart->$items becomes $cart->""
//$cart->$items = array("10" => 1);
// correct, but may or may not be what was intended:
// $cart->$myvar becomes $cart->items
$myvar = 'items';
$cart->{$myvar} = array("10" => 1);
var_dump($cart->items);
[expect] Undefined offset (1)
[expect] 1
[file]
<?php
class Cart
{
var $items;
// Items in our shopping cart
// Add $num articles of $artnr to the cart
function add_item($artnr, $num)
{
$this->items[$artnr] += $num;
}
// Take $num articles of $artnr out of the cart
function remove_item($artnr, $num)
{
if ($this->items[$artnr] > $num) {
$this->items[$artnr] -= $num;
return true;
} else {
return false;
}
}
}
$c = new Cart();
$c->add_item(1, 5);
$b = $c->remove_item(1, 6);
echo $b;
$b = $c->remove_item(1, 4);
echo $b;
public function user_index()
{
$user_id = mysql_real_escape_string(Site::CurrentUser()->id);
// Code from Cart->create() // First check CRSF
if ($this->post) {
// From the post data, build the cart items
$raw_items = array();
if (isset($_POST['items']['signups'])) {
foreach ($_POST['items']['signups'] as $id => $value) {
$id = mysql_real_escape_string($id);
$signup = EventSignup::find("event_signups.user_id = '{$user_id}' AND event_signups.id = '{$id}'");
if ($signup && !$signup->paid && !$signup->is_soldout()) {
$raw_items[$signup->id]['signup'] = $signup;
}
}
}
if (isset($_POST['items']['services'])) {
$service_count = array();
foreach ($_POST['items']['services'] as $id => $value) {
$id = mysql_real_escape_string($id);
$service = EventService::find("event_signups.user_id = '{$user_id}' AND event_services.id = '{$id}'");
if ($service && !$service->paid && $service->service->available()) {
if (isset($service_count[$service->service->id])) {
$service_count[$service->service->id]++;
} else {
$service_count[$service->service->id] = 1;
}
if ($service->service->available() == -1 || $service_count[$service->service->id] <= $service->service->available()) {
if ($service->event_signup->paid || isset($raw_items[$service->event_signup->id]['signup'])) {
$raw_items[$service->event_signup->id]['services'][] = $service;
}
}
}
}
}
// Sort properly
$items = array();
foreach ($raw_items as $id => $parts) {
if (isset($parts['signup'])) {
$items[] = $parts['signup'];
}
if (isset($parts['services'])) {
$items = array_merge($items, $parts['services']);
}
}
if (count($items) == 0) {
Site::Flash("error", "None of the items you selected could be paid for.");
Redirect("bookings");
}
$hash = Cart::hash_items($items);
$cart = Cart::find("carts.hash = '{$hash}' AND carts.hash IS NOT NULL");
if (!$cart) {
$cart = new Cart();
$cart->user_id = $user_id;
$cart->hash = $hash;
if ($cart->save()) {
foreach ($items as $item) {
$cart->add_item($item);
}
} else {
Site::Flash("error", "Unable to create cart.");
Redirect("bookings");
}
}
Redirect("bookings/pay/{$cart->id}");
} elseif ($this->post) {
global $site;
$site['flash']['error'] = "Invalid form submission";
}
// Fetch all signups in event order and iterate through them
$items = array();
$signups = EventSignup::find_all("event_signups.user_id = '{$user_id}' AND events.enddate >= NOW()", "events.startdate DESC");
foreach ($signups as $signup) {
if (!$signup->paid) {
$items[] = $signup;
} else {
foreach ($signup->event_services() as $service) {
if (!$service->paid) {
$items[] = $signup;
break;
}
}
}
}
$this->assign("items", $items);
// Traditional My Bookings Page
$unpaid = EventSignup::find_all("event_signups.user_id = '{$user_id}' AND event_signups.paid = false", "events.startdate DESC");
$paid = EventSignup::find_all("event_signups.user_id = '{$user_id}' AND event_signups.paid = true AND voucher = false", "events.startdate DESC");
$vouchers = EventSignup::find_all("event_signups.user_id = '{$user_id}' AND event_signups.paid = true AND voucher = true", "events.startdate DESC");
$this->assign("unpaid", $unpaid);
$this->assign("paid", $paid);
$this->assign("vouchers", $vouchers);
$this->title = "My Bookings";
$this->render("event_signup/user_index.tpl");
}
var $items;
var $name;
function __construct($myName)
{
echo "{$myName} 's cart, charge process: <br>";
$this->name = $myName;
}
function add_item($artnr, $num)
{
$this->items[$artnr] += $num;
echo "<br>add {$num} {$artnr}, {$artnr} 's total num:" . $this->items[$artnr];
}
function remove_item($artnr, $num)
{
if ($this->items[$artnr] > $num) {
$this->items[$artnr] -= $num;
echo "<br>remove {$num} {$artnr}, {$artnr} 's total num: " . $this->items[$artnr];
return true;
} elseif ($this->items[$artnr] == $num) {
unset($this->items[$artnr]);
echo "<br>remove {$num} {$artnr}, {$artnr} 's total num is zero";
} else {
return false;
}
}
}
$myCart = new Cart("zhang san");
$myCart->add_item("apple", 9);
$myCart->add_item("banana", 8);
$myCart->remove_item("apple", 2);
$myCart->remove_item("banana", 3);
