如何获取每个子数组的每一列的数组和？

Question

这是我的数组：

Array ( 
    [HRI] => Array (
        [0] => Array (
            [0] => 14157.72
            [1] => 10157.72
        )
        [1] => Array (
            [0] => 39140.94
            [1] => 39140.94
        )
        [2] => Array (
            [0] => 36383.66
            [1] => 36383.66
        )
        [3] => Array (
            [0] => 38508.00
            [1] => 38508.00
        )
        [4] => Array (
            [0] => 8424.00
            [1] => 8424.00
        )
    )
    [MPU] => Array (
        [0] => Array (
            [0] => 432.00
            [1] => 1200.00
        )
    )
    [RHA] => Array (
        [0] => Array (
            [0] => 111562.50
            [1] => 94237.50
        )
        [1] => Array (
            [0] => 37880.00
            [1] => 31400.00
        )
        [2] => Array (
            [0] => 11364.00
            [1] => 9420.00
        )
        [3] => Array (
            [0] => 23719.50
            [1] => 18832.50
        )
        [4] => Array (
            [0] => 26705.00
            [1] => 21800.00
        )
        [5] => Array (
            [0] => 5190.00
            [1] => 3816.00
        )
        [6] => Array (
            [0] => 8707.50
            [1] => 6966.00
        )
        [7] => Array (
            [0] => 0.00
            [1] => 0.00
        )
        [8] => Array (
            [0] => 0.00
            [1] => 0.00
        )
        [9] => Array (
            [0] => 0.00
            [1] => 0.00
        )
        [10] => Array (
            [0] => 128952.00
            [1] => 94500.00
        )
        [11] => Array (
            [0] => 0.00
            [1] => 0.00
        )
    )
    [PBA] => Array (
        [0] => Array (
            [0] => 58816.26
            [1] => 50784.36
        )
    )
)

我想遍历每个子数组并获取每列的总和。

例如

对于键为HRI的子数组：

[HRI] => 
    Array (
        [0] => Array ( [0] => 14157.72 [1] => 10157.72 )
        [1] => Array ( [0] => 39140.94 [1] => 39140.94 )
        [2] => Array ( [0] => 36383.66 [1] => 36383.66 )
        [3] => Array ( [0] => 38508.00 [1] => 38508.00 )
        [4] => Array ( [0] => 8424.00 [1] => 8424.00 )
    )

预期输出：

column 0:
  14157.72 + 39140.94 + 36383.66 + 38508.00 + 8424.00 = ?

column 1:
  10157.72 + 39140.94 + 36383.66 + 38508.00 + 8424.00 = ?

我当前的代码：

$amount = [];
for($o=0;$o<count($totalamount);$o++){
    print_r($totalamount[$o]['login']); 
    
    if($totalamount[$o]['login'] == $totalamount[$o]['login']){
        //$amount[$totalamount[$o]['login']] += $totalamount[$o]['piamount'];
        $piamount[$totalamount[$o]['login']][] = array_sum(array($totalamount[$o]['piamount'].','));
    }
}

如何更改我的代码以获得预期的结果？

Answer 1

这应该适合你：

只需遍历数组并得到每个子数组的总和 array_sum()

foreach($arr as $k => $v)
    echo $k . " = " . array_sum($v) . "<br>";

示例input/output:

$arr = [
        [1,2,3],
        [4,5,6],
        [7,8,9],
    ];

输出：

0 = 6
1 = 15
2 = 24

编辑：

既然你更新了你的数组结构，就用这个：

foreach($arr as $k => $v)
    echo $k . " = " . array_sum(array_map("array_sum", $v)) . "<br>";

编辑 2：

如果你想要子数组的每个数组的总和，你必须像这样使用两个 foreach 循环：

foreach($arr as $k1 => $innerArray) {
    foreach($innerArray as $k2 => $v)
        echo "$k1-$k2 = " . array_sum($v) . "<br>";
    echo "<br><br>";
}

编辑 3：

我想我终于明白你想要什么了：你只想遍历每个子数组并获得子数组每一列的总和：

foreach($arr as $k1 => $innerArray) {
    foreach($innerArray[0] as $k2 => $v)
        echo "$k1-$k2 = " . array_sum(array_column($innerArray, $k2)) . "<br>";
    echo "<br><br>";
}

Answer 2

$a=Array (
    'HRI'=> Array (14157.72, 39140.94 , 36383.66,38508, 8424 ),
    'RHA'=> Array (111562.5, 37880 ,  11364 ,23719.5,  26705 ),
    'PBA'=> Array (58816.26),
    'MPU'=> Array (432 )
);
$sumHRI=0;

foreach ($a['HRI'] as $key=>$value) $sumHRI+=$value;

echo "HRI=$sumHRI";

更新后的问题：

  $a=[
    'HRI'=>[
        [14157.72, 39140.94 , 36383.66,38508, 8424],
        [14157.72, 39140.94 , 36383.66,38508, 8424],
        [14157.72, 39140.94 , 36383.66,38508, 8424],
        [14157.72, 39140.94 , 36383.66,38508, 8424],
        ],
    'RHA'=>[111562.5, 37880 ,  11364 ,23719.5,  26705 ],
    'PBA'=> [58816.26],
    'MPU'=> [432]
];

$sumArray=[];
foreach ($a as $k=>$bigArray){
    $sumArray[$k]=0;
    foreach($bigArray as $subArray) $sumArray[$k]+=array_sum($subArray);
    echo "$k={$sumArray[$k]}";
}

如果我没理解错的话，你想要计算出的总和。如果你想实际打印数字和符号 +，它必须在某处添加一个字符串连接。

如何获取每个子数组的每一列的数组和？

How to get the array sum of each column of each sub array?

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