在 PHP 中使数组循环动态化

Question

我有 2 个数组，$rekeningnum_array 和 $weights。两个数组都包含 10 位数字。

$rekeningnum_array includes: {3,7,1,6,2,9,3,4,5,2}
$weights always includes: {1,2,3,4,5,6,7,8,9,10}

每个$rekeningnum_array[i] 对象都转到*times 一个$weights[i] 数组对象。所以是[ i ] x [ i ]。

计算完所有 10 个总和后，将它们存储在 $answers[i] 数组中并相乘，然后将最终答案除以 11。我附上了一张图片以便于理解。

这是我的代码：

$rekeningnum_array = array(3, 7, 1, 6, 2, 9, 3, 4, 5, 2);
$weights = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);

for($i=0; $i <= 9; $i++) {
    $ant[$i] = $rekeningnum_array[$i] * $weights[$i];
    echo $rekeningnum_array[$i] . " x " . $weigts[$i] . " = " . $answer[$i] . "</br>"; 

};



// Multiply all answers and devide them by 11.

$sum = $answer[0] + $answer[1] + $answer[2] + $answer[3] + $answer[4] + $answer[5] + $answer[6] + $answer[7] + $answer[8] + $answer[9];
$antwoord = $sum / 11;

我的问题是，如何让我的代码更具动态性？

（$gewichten 代表 $weights）

Answer 1

是的，您也可以动态创建循环。使用此代码

<?php
$rekeningnum_array = array(3, 7, 1, 6, 2, 9, 3, 4, 5, 2);
$weights = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
$sum=0;
foreach($rekeningnum_array as $key => $value) {
    $ans[$key] = $value * $weights[$key];
     $sum+=$ans[$key];

};

// Multiply all answers and devide them by 11.
echo $antwoord = $sum / 11;

?>

Answer 2

您使用了ant[$i]（第 4 行）作为结果，$weights[$i]（第 5 行）的拼写不正确。

$rekeningnum_array = array(3, 7, 1, 6, 2, 9, 3, 4, 5, 2);
    $weights = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);

for($i=0; $i <= 9; $i++) {
    $answer[$i] = $rekeningnum_array[$i] * $weights[$i];
    echo $rekeningnum_array[$i] . " x " . $weights[$i] . " = " . $answer[$i] . "</br>"; 

};



// Multiply all answers and devide them by 11.

$sum = $answer[0] + $answer[1] + $answer[2] + $answer[3] + $answer[4] + $answer[5] + $answer[6] + $answer[7] + $answer[8] + $answer[9];
$antwoord = $sum / 11;

Answer 3

解决了您的问题请通过此代码更新您的代码

<?php

$rekeningnum_array = array(3, 7, 1, 6, 2, 9, 3, 4, 5, 2);
$weights = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
$ant =0;
for($i=0; $i <= 9; $i++) {
    $ant += $rekeningnum_array[$i] * $weights[$i];
    $now_result = $rekeningnum_array[$i] * $weights[$i];
    echo $rekeningnum_array[$i] . " x " . $weights[$i] . " = " . $now_result . "</br>"; 
};
echo $antwoord = $ant / 11;

?> 

这里我在循环之前定义了一个空白变量 $ant 在循环内部我添加（+=），它在循环的每次迭代中添加并存储每个值。 变量 $now_result 我仅用于打印循环内的每个迭代值 在循环之外，我根据需要将 $ant 除以 11 就是这么简单

Answer 4

用我的代码改变你的代码

<?php
    $rekeningnum_array = array(3, 7, 1, 6, 2, 9, 3, 4, 5, 2);
    $weights = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
    $answer = array(); //New Blank Array is initialized
    for($i=0; $i <= 9; $i++) {
       $answer[$i] = $rekeningnum_array[$i] * $weights[$i];//Here ant variable is changed to answer
       echo $rekeningnum_array[$i] . " x " . $weights[$i] . " = " . $answer[$i] . "</br>"; //Here $weigts spelling mistake

    };



 // Multiply all answers and devide them by 11.

 $sum = $answer[0] + $answer[1] + $answer[2] + $answer[3] + $answer[4] + 
 $answer[5] + $answer[6] + $answer[7] + $answer[8] + $answer[9];
 $antwoord = $sum / 11;

Answer 5

试试这个

$rekeningnum_array = array(3, 7, 1, 6, 2, 9, 3, 4, 5, 2);
$weight = 1;
$count = count($rekeningnum_array)-1;
$answer = array();
for($i=0; $i <= $count; $i++) {
    $weight = $weight > 10?1:$weight;
    $answer[$i] = $rekeningnum_array[$i] * $weight ;
    echo $rekeningnum_array[$i] . " x " . $weight . " = " . $answer[$i] . "</br>"; 
 $weight++;
}    
$sum = array_sum($answer);
$antwoord = $sum / 11;

Answer 6

使用类似的东西

$rekeningnum_array = array(3, 7, 1, 6, 2, 9, 3, 4, 5, 2);
$weights = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
$sum=0;
for($i=0; $i <= 9; $i++) {
    $ans[$i] = $rekeningnum_array[$i] * $weights[$i];
     $sum+=$ans[$i];

};

// Multiply all answers and devide them by 11.
$antwoord = $sum / 11;