子数组中所有元素的求和 - PHP

Question

我有以下数组作为$ main_array.想要总结子数组中的所有元素,如[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 
         ) 
)

试过以下代码.

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

但我得到的阵列结构是,

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!

Answer 1

当你调用Array函数时,你明确地创建一个数组,所以你必须从中删除它 Array('1'=>array_sum($value));

这就是你的代码应该是这样的

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