Question

这就是我想要做的。我希望我的代码返回以下内容：

＆＃34;小方框的音量为：300＆＃34;

但我似乎无法弄明白该怎么做：

<?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 />";
    }
    ?>

Answer 1

您循环遍历$value，计算并显示$sum倍（3）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 />";
}

如果您没有包含length，width和depth的可预测数组，那么完全没有任何意义，但您也可以这样做：< / p>

    echo $boxes['length'] * $boxes['width'] * $boxes['depth'];

Answer 2

$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 $key => $boxes) {
    $volume = array_product($boxes);
    echo "The volume of the $key is: $volume\n";
}

Answer 3

你可以将盒子的大小变成索引数组

 $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print_r（$ data）;

的结果

Array
(
    [Small box] => 300
    [Medium box] => 2400
    [Large box] => 27600
)

您可以使用。

将变量访问到任何类型的框

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

，结果就像

sample : The volume of the Medium Box is 2400

如果您正在寻找，请告诉我。

数组乘以答案并返回它

3 个答案: