Question

嗨我想问一下如何才能获得物品的总成本。我有购物车，它只显示每个项目的价格数量和成本。我希望得到用户添加的所有项目的总费用请帮助

这是我的购物车代码

<?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		
		'item_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']);
} 

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title><?php echo $_SERVER['HTTP_HOST']; ?> Online Order Form</title>
<style>


#formArea #orderForm #formColumns {
	width:650px;
	margin:auto;
}
#formArea #orderForm #formColumns #leftColumn {
	float:left;
	width:300px;
}
#orderForm {
	height:500px;
}
#formArea #orderForm #formColumns #rightColumn {
	float:right;
	width:300px;
}
#formArea #orderForm #formColumns th {
	text-align: left;
}
.copyright {
	font-size: 9pt;
}






</head>

<body>
    
        <?php 
        //Print all the items in the shopping cart
        foreach ($_SESSION['SHOPPING_CART'] as $itemNumber => $item) {
        ?>
        <tr id="item<?php echo $itemNumber; ?>">    
            <td><a href="?remove=<?php echo $itemNumber; ?>">remove</a></td>
            <td><?php echo $item['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>
     			
			
        </tr>
        <?php
        }
        ?>
    </table>
	<?php $_SESSION['SHOPPING_CART_HTML'] = ob_get_flush(); ?>
    <p>
      <label>
      <input type="submit" name="update" id="update" value="Update Cart" />
      </label>
    </p>
</form>
<p><a href="javascript: history.go(-1)">Keep Shopping</a> - <a href="?empty">Empty</a> Cart</p>
</div>
<label>
     <form action="form.php">
    <input type="submit" id="checkout" value="Check Out" />
</form>
   
   
   
   
</body>
</html>

Answer 1

在此片段中，您只需添加$total变量：

等内容即可

<?php 
    //Print all the items in the shopping cart
    //## Declare your total value
    $total = 0;

    foreach ($_SESSION['SHOPPING_CART'] as $itemNumber => $item) {
        //## Count item price value
        $price_value = $item['qty'] * $item['price'];
        //## Sum prices:
        $total += $price_value;
    ?>
    <tr id="item<?php echo $itemNumber; ?>">    
        <td><a href="?remove=<?php echo $itemNumber; ?>">remove</a></td>
        <td><?php echo $item['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 $price_value ?></td><tr>
    <?php
    } 
    ?>
    <tr>
         <td colspan="4">Sum:</td>
         <td> <?php echo $total; //## echo your total ?> </td>
    </tr>

如何才能获得用户添加的所有项目的总成本？

1 个答案: