小编Sab*_*ish的帖子

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] …

我有以下数组$ weight,我想将这些值存储到mysql表中的weight列.

Array
(
    [0] => 12
    [1] => 14
    [2] => 16
    [3] => 9
    [4] => 7
)

数据库表结构是,

+----------------------------+--------+------+
| Indicators                 | Weight | Rank |
+----------------------------+--------+------+
| Elevation                  |      0 |    0 |
| Distance from the sea      |      0 |    0 |
| Natural Coastal Protection |      0 |    0 |
| Water Bodies               |      0 |    0 |
| Precipitation              |      0 |    0 |
+----------------------------+--------+------+

我期待结果为,

+----------------------------+--------+------+
| Indicators                 | Weight | Rank …