我需要帮助获得一个简单的php购物车使用会话总数

大家好，我有一个购物车，它是由2个PHP文件。order.php和products.php

所有的配置都在order文件中设置，它不使用MYSQL数据库作为im使用会话

我试图得到所有项目的总和，是添加到购物车，但这是什么我挣扎。我可以得到添加到购物车中的每个项目的总数，但不能得到所有项目的总数。在此方面的任何帮助都将不胜感激

谢谢

PHP

<?php

//Start the session
session_start();

//Create 'cart' if it doesn't already exist
if (!isset($_SESSION['SHOPPING_CART'])){ $_SESSION['SHOPPING_CART'] = array(); }


//Add an item only if we have the threee required pices of information: name, price, qty
if (isset($_GET['add']) && isset($_GET['price']) && isset($_GET['qty'])){
        //Adding an Item
        //Store it in a Array
        $ITEM = array(
                //Item name            
                'name' => $_GET['add'],
                //Item Price
                'price' => $_GET['price'],
                //Qty wanted of item
                'qty' => $_GET['qty']          
                );

        //Add this item to the shopping cart
        $_SESSION['SHOPPING_CART'][] =  $ITEM;
        //Clear the URL variables
        header('Location: ' . $_SERVER['PHP_SELF']);
}
//Allowing the modification of individual items no longer keeps this a simple shopping cart.
//We only support emptying and removing
else if (isset($_GET['remove'])){
        //Remove the item from the cart
        unset($_SESSION['SHOPPING_CART'][$_GET['remove']]);
        //Re-organize the cart
        //array_unshift ($_SESSION['SHOPPING_CART'], array_shift ($_SESSION['SHOPPING_CART']));
        //Clear the URL variables
        header('Location: ' . $_SERVER['PHP_SELF']);

}
else if (isset($_GET['empty'])){
        //Clear Cart by destroying all the data in the session
        session_destroy();
        //Clear the URL variables
        header('Location: ' . $_SERVER['PHP_SELF']);

}
else if (isset($_POST['update'])) {
        //Updates Qty for all items
        foreach ($_POST['items_qty'] as $itemID => $qty) {
                //If the Qty is "0" remove it from the cart
                if ($qty == 0) {
                        //Remove it from the cart
                        unset($_SESSION['SHOPPING_CART'][$itemID]);
                }
                else if($qty >= 1) {
                        //Update to the new Qty
                        $_SESSION['SHOPPING_CART'][$itemID]['qty'] = $qty;
                }
        }
        //Clear the POST variables
        header('Location: ' . $_SERVER['PHP_SELF']);
}
?>

---

只要用下面我的代码替换这段代码就行了……应该可以了

     <?php
    //Print all the items in the shopping cart
    $totalAll = 0;
    foreach ($_SESSION['SHOPPING_CART'] as $itemNumber => $item) {

    $totalAll = $totalAll + ($item['qty']*$item['price']);

    ?>
    <tr id="item<?php echo $itemNumber; ?>">    
        <td height="41"><a href="?remove=<?php echo $itemNumber; ?>">Remove Item</a></td>
        <td><?php echo $item['name']; ?></td>
        <td>£<?php echo $item['price']; ?></td>
        <td><input name="items_qty[<?php echo $itemNumber; ?>]" type="text" id="item<?php echo $itemNumber; ?>_qty" value="<?php echo $item['qty']; ?>" size="2" maxlength="3" /></td>
        <td>£<?php echo $item['qty'] * $item['price']; ?></td>  
        <td>£<?php echo $totalAll;?></td>
    </tr>
    <?php

    }
    ?>


£
£
下面有您的答案。。。
     <?php
    //Print all the items in the shopping cart
    $totalAll = 0;
    foreach ($_SESSION['SHOPPING_CART'] as $itemNumber => $item) {

    $totalAll = $totalAll + ($item['qty']*$item['price']);

    ?>
    <tr id="item<?php echo $itemNumber; ?>">    
        <td height="41"><a href="?remove=<?php echo $itemNumber; ?>">Remove Item</a></td>
        <td><?php echo $item['name']; ?></td>
        <td>£<?php echo $item['price']; ?></td>
        <td><input name="items_qty[<?php echo $itemNumber; ?>]" type="text" id="item<?php echo $itemNumber; ?>_qty" value="<?php echo $item['qty']; ?>" size="2" maxlength="3" /></td>
        <td>£<?php echo $item['qty'] * $item['price']; ?></td>  
        <td>£<?php echo $totalAll;?></td>
    </tr>
    <?php

    }
    ?>