Question

我正在制作一个购物车，实际上它现在几乎已经完成了。我只想计算总价。问题是，每个产品的价格是在foreach循环中计算的（价格*数量），所以我不确定如何将所有价格加起来。

PHP函数：

    public function getCart(){
    $cartArray = array();
    if(!empty($_SESSION["cart"])){
        if($_SESSION['cart'] != ""){
            $cart = json_decode($_SESSION['cart'], true);
            for($i=0;$i<count($cart);$i++){
                $lines = $this->getProductData($cart[$i]["product"]);
                $line = new stdClass;
                $line->id = $cart[$i]["product"];
                $line->count = $cart[$i]["count"];
                $line->product = $lines->product;
                $line->total = ($lines->price*$cart[$i]["count"]);
                $cartArray[] = $line;
            }
        }
    }
    return $cartArray;
}

我如何全部显示：

<?php
    $cart = new cart();
    $products = $cart->getCart();

    $cartCount = 0;
    if(isset($_SESSION['cart'])){
        $cart = json_decode($_SESSION['cart'], true);
        $cartCount = count($cart);
    }
    if($cartCount > 0){
?>
<table class="table table-striped table-hover">
    <tr>
        <td align="left"><b>Product</b></td>
        <td align="center"><b>Quantity</b></td>
        <td align="center"><b>Total</b></td>
        <td align="right"></td>
    </tr>
    <?php
        foreach($products as $product){
    ?>
        <tr>
            <td align="left"><?php print $product->product; ?></td>

            <td align="center">
                <?php print $product->count; ?>
                &nbsp;&nbsp;
                <i style="cursor:pointer;" class="fa fa-minus lessQuantity" 
                data-id="<?php print $product->id; ?>"></i>
                <i style="cursor:pointer;" class="fa fa-plus addQuantity" 
                data-id="<?php print $product->id; ?>"></i>
            </td>

            <td align="center">$<?php print $product->total; ?></td>

            <td align="right">
                <span style="cursor:pointer;" data-toggle="tooltip" title="Delete item." 
                class="removeFromCart" data-id="<?php print $product->id; ?>"><i class="fa fa-trash"></i> Remove
                </span>
            </td>
        </tr>
    <?php 
        }
        } else {
            echo '<div class="alert alert-danger">No products in shopping cart!</div>';
        }
    ?>

    <tr>
        <td></td>
        <td></td>
        <td></td>
        <td align="right"><b>Total: $ Amount</b></td>
    </tr>
</table>

所以这条规则计算价格：

$line->total = ($lines->price*$cart[$i]["count"]);

但是，我希望将该行的所有结果加到总价中。有人可以帮我吗？

Answer 1

只需将产品总数添加到新变量中即可。

循环推车时：

<?php
    $amount = 0;
    foreach($products as $product){
        $amount += $product->total;
?>

循环之后：

<td align="right"><b>Total: <?= $amount ?></b></td>

Answer 2

您可以只添加一个新变量，将以前的价格相加并将此变量添加到$cartArray：

public function getCart(){
    $cartArray = array();
    $cartArray["products"] = array();
    $totalCart = 0;
    if(!empty($_SESSION["cart"])){
        if($_SESSION['cart'] != ""){
            $cart = json_decode($_SESSION['cart'], true);
            for($i=0;$i<count($cart);$i++){
                $lines = $this->getProductData($cart[$i]["product"]);
                $line = new stdClass;
                $line->id = $cart[$i]["product"];
                $line->count = $cart[$i]["count"];
                $line->product = $lines->product;
                $line->total = ($lines->price*$cart[$i]["count"]);
                $totalCart += $line->total;
                $cartArray["products"][] = $line;
            }
        }
    }
    $cartArray["total"] = $totalCart;
    return $cartArray;
}

这将返回如下数组：

Array(
   "products" => Array(
       [0] = ...
       [1] = ...
   ),
   "total" => 300
);

使用数组值PHP添加总价格的价格

2 个答案: