添加数组 [英] Adding arrays

问题描述

考虑以下多维数组：

---------------------------

$ arr =数组（

数组（3,5,7,9），

数组（2,4,6,8），
数组（1,3,5,7）

）;


函数add_arrays（$ arr）{

for（$ row = 0; $ row< count（$ arr [0]）; $ row ++）{

for（$ column = 0; $ column< count（$ arr [ $ column]）; $ column ++）{

$ totals [$ row] = $ totals [$ row] + $ arr [$ column] [$ row];

}

}

print_r（$ totals）;

}


add_arrays（$ arr） ;

---------------------------

返回以下数组：

数组（[0] = 6 [1] = 12 [2] = 18 [3] = 24）


这些是数组的总数在$ arr：6（3 + 2 + 1，添加所有

第一个元素），12（5 + 4 + 3，添加所有第二个元素）等等。这个

花了我一天的时间来构建;）但是，我会像add_arrays一样返回一个亩的
像这样的ltidimensional数组：


数组（

数组（[0] = 3 [1] = 5 [2] = 7 [3] = 9） //第1行

数组（[0] = 5 [1] = 9 [2] = 13 [3] = 17）//第1行+第2行

行（即5 = 3 + 2）

数组（[0] = 6 [1] = 12 [2] = 18 [3] = 24）// 1st _ 2nd + 3rd

行（即6 = 3 + 2 + 1）

）


有人可以帮我构建一个功能吗？
将一行添加到前一行并将结果添加到输出

数组？任何帮助都会非常感激！

解决方案

arr = array（

array（3,5， 7,9），

数组（2,4,6,8），

数组（1,3,5,7）

）;


函数add_arrays（

arr）{

for（

< blockquote> row = 0;

Consider the following multi-dimensional array:
---------------------------
$arr = array(
array(3, 5, 7, 9),
array(2, 4, 6, 8),
array(1, 3, 5, 7)
);

function add_arrays($arr) {
for ($row = 0; $row < count($arr[0]); $row++) {
for ($column = 0; $column < count($arr[$column]); $column++) {
$totals[$row] = $totals[$row] + $arr[$column][$row];
}
}
print_r($totals);
}

add_arrays($arr);
---------------------------
This returns the following array:
Array ( [0] =6 [1] =12 [2] =18 [3] =24 )

These are the totals of the array''s in $arr: 6 (3 + 2 + 1, added all
first elements), 12 (5 + 4 + 3, added all second elements), etc. This
took me quite a portion of the day to construct ;) However, I would
like add_arrays to return a multidimensional array like this:

Array (
Array ( [0] =3 [1] = 5 [2] = 7 [3] = 9 ) // 1st row
Array ( [0] =5 [1] = 9 [2] =13 [3] =17 ) // 1st row + second
row (i.e. 5 = 3 + 2)
Array ( [0] =6 [1] =12 [2] =18 [3] =24 ) // 1st _ 2nd + 3rd
row (i.e. 6 = 3 + 2 + 1)
)

Could somebody please help me building a function that does just that?
Adding one row to the previous one and adding the result to the output
array? Any help would be greatly apprectiated!

解决方案

arr = array(
array(3, 5, 7, 9),
array(2, 4, 6, 8),
array(1, 3, 5, 7)
);

function add_arrays(

arr) {
for (

row = 0;

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