Indkøbskurv

Her er et helt butikssystem: www.oscommerce.org.

<?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;
        } 
    }
}
?>

desværre forstår ikke noget af det... jeg prøver selv via nogen sessions

<?php
class Cart {
    var $items;  // Items in our shopping cart

    // constructor
    function Cart()
    {
        $this->items = array();
    }

    // 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 == 0) {
            return $this->erase_item ($artnr);
        } else if ($this->items[$artnr] > $num) {
            $this->items[$artnr] -= $num;
            return true;
        } else {
            return false;
        }
    }

    // Add all articles of $artnr out of the cart
    function erase_item ($artnr) {
        unset($this->items[$artnr]);
    }

}
session_start();
if (!isset($_SESSION['cart'])) {
    $_SESSION['cart'] = new Cart();
}
//////////////////////////////////////////////////////////////////////////////
// demo

if (isset($_POST['action']) && $_POST['action'] == 'add') {
    $_SESSION['cart']->add_item($_POST['artnr'],$_POST['num']);
} else if (isset($_POST['action']) && $_POST['action'] == 'remove') {
    $_SESSION['cart']->remove_item($_POST['artnr'],$_POST['num']);
} else if (isset($_POST['action']) && $_POST['action'] == 'empty') {
    $_SESSION['cart'] = new Cart();
}
?>
<html>
<table border="1">
<tr><th>item id</th><th>ammount</th><th>action</th></tr>
<?php
foreach ($_SESSION['cart']->items as $artnr => $num) {
    echo "<tr><td>".$artnr."</td><td align=\"center\">".$num."</td>";
    echo "<form method=\"post\"><td>";
    echo "<input type=\"hidden\" name=\"action\" value=\"remove\" />";
    echo "<input type=\"hidden\" name=\"artnr\" value=\"".$artnr."\" />";
    echo "<input type=\"hidden\" name=\"num\" value=\"1\" />";
    echo "<input type=\"submit\" value=\"remove\" />";
    echo "</td></form></tr>\n";
}
?>
</table>

<form method="post">
<input type="hidden" name="action" value="add" />
<input type="hidden" name="num" value="1" />
<select name="artnr">
<option value="badebold">badebold</option>
<option value="strudsefjer">strudsefjer</option>
<option value="skruetrækker">skruetrækker</option>
</select>
<input type="submit" value="add" />
</form>

<form method="post">
<input type="hidden" name="action" value="empty" />
<input type="submit" value="empty cart" />
</form>

</html>