子数组中所有元素的总和 - PHP

问题描述

我有以下数组作为 $main_array .想要对子数组中的所有元素求和，例如 [0]=>6, [1]=>11, [2]=>15.

I've got the following array as $main_array .Wanted to sum up all the elements in the sub array such as [0]=>6, [1]=>11, [2]=>15.

Array 
( 
[0] => Array 
       ( 
         [0] => 1 
         [1] => 2 
         [2] => 3 
       ) 
[1] => Array 
       ( 
         [0] => 2 
         [1] => 4 
         [2] => 5 
       ) 
[2] => Array 
       ( 
         [0] => 8 
         [1] => 4 
         [2] => 3 
         ) 
)

尝试了以下代码.

foreach ($main_array as $key => $value)
  $main_array[$key] = Array('1'=>array_sum($value));
print_r($main_array);

但是我得到的数组结构是，

But the array structure I got was,

Array 
( 
    [0] => Array 
    ( 
        [1] => 6 
    ) 
    [1] => Array 
    ( 
        [1] => 11
    ) 
    [2] => Array 
    ( 
        [1] => 15 
    ) 
)

我期待数组结构如下.

Array 
( 
    [0] => 6

    [1] => 11

    [2] => 15

)

提前致谢！

推荐答案

当你调用 Array 函数时，你明确地创建了一个数组，所以你必须从 Array('1'=>array_sum($value));

When you're calling Array function you're explicitly making an array so you have to remove this from Array('1'=>array_sum($value));

这就是你的代码应该是什么样子

This is how your code should look like

foreach ($main_array as $key => $value)
  $main_array[$key] = array_sum($value);

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