如何从多个 Arrays 列中添加一起 PRICE？

Question

我正在尝试构建自己的“购物车”系统，我想获取所有 ['Price'] 列并将它们加在一起以获得销售总额。 我试图将它们推出 $variable 或 $_SESSION['total']; 所以我可以将它展示给最终用户。

array(3) {
    [1]=>
    array(4) {
      ["Qty"]=>
      string(1) "1"
      ["Price"]=>
      string(1) "1"
      ["Name"]=>
      string(4) "Coke"
    }
    [2]=>
    array(4) {
      ["Qty"]=>
      string(1) "1"
      ["Price"]=>
      string(1) "1"
      ["Name"]=>
      string(4) "Coke"
    }
    [3]=>
    array(4) {
      ["Qty"]=>
      string(1) "1"
      ["Price"]=>
      string(1) "1"
      ["Name"]=>
      string(4) "Coke"
    }
  }

Answer 1

您需要遍历购物车数组中的每个产品，并将总价格添加到变量中。 像这样的东西：

$price_total = 0;

// If you need to take quantity into account
foreach ($order_product as $product) {
  $price_total = $price_total + ($product['Qty'] * $product['Price']);
}

// If you don't need to take quantity into account
foreach ($order_product as $product) {
  $price_total = $price_total + $product['Price'];
}

Answer 2

假设您已经拥有上面提到的相同数组：

$total = array_column( $array, 'Price' ); // taking the array and getting the values of the price
$total = array_sum( $total ); // add the values together to get the total price from it
// now you can put it in session too if you want
$_SESSION['CART_TOTAL_PRICE'] = $total;