在PHP中如何从一个阵列中添加值到另一个时，他们的键值对匹配吗？ [英] How in PHP to add values from one array to another when their key value pairs match?

问题描述

下面是我的两个数组：

  $ ARRAY1 =（[0] =＆GT;数组（[ROW_ID] =＆GT; 237 [评论] =＆GT;'hello0'）
           [1] =＆GT;阵列（[ROW_ID] =大于5 [评论] =＆GT;'hello1'）
           [2] =＆GT;阵列（[ROW_ID] =＆GT; 6 [评论] =＆GT;'hello2'））;$数组2 =（[0] =＆GT;数组（[ROW_ID] =大于5 [投票] =＆GT; 1）
           [1] =＆GT;阵列（[ROW_ID] =大于7 [投票] =＆GT; 1）
           [2] =＆GT;阵列（[ROW_ID] =＆GT; 237 [投票] = 0））;
 

我想匹配 $数组1 和 $数组2 在 [ROW_ID]的并添加 $数组2
  [投票] 键/值对$ ARRAY1其中， $数组1 [ROW_ID] = $数组2 [ROW_ID]

这是怎么想我的输出是：

  $数组1 =（[0] =＆GT;数组（[ROW_ID] =＆GT; 237 [评论] =＆GT;'hello0[投票] = 0）
           [1] =＆GT;阵列（[ROW_ID] =大于5 [评论] =＆GT;'hello1[投票] =＆GT; 1）
           [2] =＆GT;阵列（[ROW_ID] =＆GT; 6 [评论] =＆GT;'hello2[投票] =＆GT; 1））;
 

我敢肯定有很多方法可以做到这一点，所以在计算速度最快的想法也将是AP preciated！

解决方案

 的foreach（数组1 $ $为KEY1 =＆GT; $值1）
{
  的foreach（$数组2为$键2 =＆GT; $值2）
  {
     如果（$值1 ['ROW_ID'] == $ 2 ['ROW_ID']）
     {
         $值1 ['投票'] = $ 2 ['投票'];
         $结果[$键1] [] = $值1;
     }
 }
}$结果是你需要的东西！
 

Here are my two arrays:

$array1 =( [0] => Array ( [row_id] => 237 [comment] => 'hello0' )
           [1] => Array ( [row_id] => 5 [comment] => 'hello1' ) 
           [2] => Array ( [row_id] => 6 [comment] => 'hello2' ) );

$array2= ( [0] => Array ( [row_id] => 5 [vote] => 1 ) 
           [1] => Array ( [row_id] => 7 [vote] => 1 ) 
           [2] => Array ( [row_id] => 237 [vote] => 0 ) );

I'd like to match $array1 and $array2 on [row_id] and add $array2's [vote] key/value pairs to $array1 where $array1[row_id]=$array2[row_id]

This is how I'd like the output to be:

$array1 =( [0] => Array ( [row_id] => 237 [comment] => 'hello0' [vote] => 0  )
           [1] => Array ( [row_id] => 5 [comment] => 'hello1' [vote] => 1 ) 
           [2] => Array ( [row_id] => 6 [comment] => 'hello2' [vote] => 1 ) );

I'm sure there are many ways to do this, so thoughts on the fastest computationally would also be appreciated!

解决方案

foreach($array1 as $key1=>$value1)
{
  foreach($array2 as $key2=>$value2)
  {
     if($value1['row_id']==$value2['row_id'])
     {
         $value1['vote'] = $value2['vote'];
         $result[$key1][]=$value1;
     }
 }
}

$result is what you need!

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