私は基本的な買い物カゴに取り組んでいます。しかし、$ _SESSION変数が適切に格納またはアクセスされていないかのように見えます。たとえば、hereに旅行すると、アイテム名が表示されます。しかし、$ _GET変数なしでcart.phpを更新すると、何も返されません。私は間違って何をしていますか?
<?php
include "tickets/config.php";
if (isset ($_GET['action']) && isset($_GET['item'])) {
$cart = new Cart($_GET['item']);
if ($_GET['action'] == "addItem") {
$cart->addItem();
$cart->get_items_code();
$cart->populate();
}
if($_GET['action'] == "removeItem") {
$cart->removeItem();
$cart->get_items_code();
$cart->populate();
}
$cart->postAllItems();
}
else {
$cart = new Cart(null);
$cart->get_items_code();
$cart->populate();
$cart->postAllItems();
}
class Cart {
protected $all_items = array();
protected $request_item;
protected $content;
protected $item_obj;
public function __construct($request_item) {
$this->request_item = $request_item;
if ($this->request_item)
$this->item_obj = new Item($this->request_item);
$this->all_items = $this->getAllItems();
}
public function getAllItems() {
if ($_SESSION['cart'])
$request = $_SESSION['cart'];
else
$request = array();
return $request;
}
public function postAllItems() {
$_SESSION['cart'] = $this->all_items;
}
public function addItem() {
array_push($this->all_items, $this->item_obj);
}
public function removeItem() {
unset($this->all_items[$this->item_obj->get_item()]);
}
public function get_items_code() {
//for($i = 0; $this->all_items[$i]; $i++) {
foreach($this->all_items as $item) {
$name = $item->get_name();
$this->content .= <<<HTML
<div class="item">
$name
</div>
HTML;
}
}
public function populate() {
echo <<<HTML
<div id="list">
$this->content
<div>
HTML;
}
}
class Item {
protected $id;
protected $name;
protected $price;
protected $desc;
protected $colors;
protected $sizes;
protected $pic_url;
protected $all_info;
public function __construct($id) {
$this->id = $id;
$this->get_item_info();
}
public function get_item() {
return ($this);
}
public function get_name() {
return $this->name;
}
protected function get_item_info() {
$sql = "SELECT * FROM catalog WHERE id = ".$this->id;
$this->all_info = mysql_query($sql);
$this->all_info = mysql_fetch_array($this->all_info);
$this->name = $this->all_info['name'];
$this->price = $this->all_info['price'];
$this->desc = $this->all_info['description'];
$this->colors = $this->all_info['colors'];
$this->sizes = $this->all_info['sizes'];
$this->pic_url = $this->all_info['picture'];
}
}
?>
正しい。その理由は、 'www.example.com'と' example.com'は異なるドメインです( 'www'はサブドメインです)。クッキーは1つのドメインに対してのみ有効なので、そこに格納されているセッションキーは、変更するときには存在しません。 – jwueller