Php 将答案相乘并返回它的数组

这就是我想做的。我希望我的代码返回以下内容：

“这个小盒子的体积是：300”

但我似乎不知道该怎么办：

<?php
    $box = array(
       "Small box" => array("length" => 12, "width" => 10, "depth" => 2.5),
       "Medium box" => array("length" => 30, "width" => 20, "depth" => 4),
       "Large box" => array("length" => 60, "width" => 40, "depth" => 11.5)

    );
    foreach ($box as $number => $boxes)
    {
        echo "The volume of the "."$number"." is: \t";
        foreach ($boxes as $value)            
        {
            if (is_numeric($value))
            {
               $sum = array_product($boxes);
               echo "$sum";
            }
        }
        echo "<br />";
    }
    ?>

---

您正在通过

$value

循环，计算并显示

$sum

多次。只需计算产品：

foreach ($box as $number => $boxes)
{
    echo "The volume of the "."$number"." is: \t";
    echo array_product($boxes);

    echo "<br />";
}

---

您可以将框的大小放入索引数组中

 $sum = 1;/*set variable sum to 1 so if it's * in another numerics it's not 0*/
 $i = 0; /*set i condition to reset value of condition*/
    foreach ($box as $number => $boxes) { 
        foreach ($boxes as $value)            
        {
            if (is_numeric($value)){
               $sum = $sum*$value; /*it's product length*width*depth */
            }
            /*cek the condition if count of boxes is limit lengt so define variable data["box type"]*/
            if(($i+1) == count($boxes)){
              $data[$number] = $sum; /*give value for $data["box type"]*/
            }
            $i++;
        }
        $sum = 1;/*reset sum to 1*/
        $i   =0;/*reset i to 0*/
    }

这是打印（数据）的结果

您可以使用访问任何类型的框的变量

echo "sample : The volume of the Medium Box is ". $data["Medium box"]." : \t";

结果会是这样

sample : The volume of the Medium Box is 2400

---

如果您正在寻找，请告诉我。

$code>$sum=array\u product（$box）使用了错误的变量use

$sum*=$value但不
$sum=1位于foreach上方。和
回显“$sum”然后应该在foreach之后。非常感谢您的解决方案！！！它显然有效。谢谢你这样的解释，我理解代码的作用。这确实有效，谢谢你的解释，现在我明白我做错了什么。
Array
(
    [Small box] => 300
    [Medium box] => 2400
    [Large box] => 27600
)

echo "sample : The volume of the Medium Box is ". $data["Medium box"]." : \t";

sample : The volume of the Medium Box is 2400