PHP搜索數組，並在id相等的位置添加內容

Question

我有2個。 具有相同結構但只有一個ID相同的陣列。 每當特定ID相同時，我都需要從IncludeArray向MainArray添加內容。

這是一個數組示例（MainArray最多可以容納100個或更多項目，該示例僅包含真實內容的一部分）：

$MainArray = Array
 (
   [0] => Array
      (
        [item_id] => 1
        [name] => Test1
        [helptxt] => Helptext for item-id 1.
        [type_id] => 1      #could be the same for many other items!!
      )
   [1] => Array
      (
        [item_id] => 2
        [name] => Test2
        [helptxt] => Helptext for item-id 2.
        [type_id] => 2      #could be the same for many other items!!
      )
   and a lot more Arrays
 )


$IncludeArray = Array
(
  [0] => Array
      (
        [type_id] => 1
        [typetitle] => Number
        [typedesc] => Description Text type_id 1
      )
  [1] => Array
      (
        [type_id] => 2
        [typetitle] => Value
        [typedesc] => Description Text type_id 2
      )
 )

所需的新數組應為：

 $NewMainArray = Array
 (
   [0] => Array
      (
        [item_id] => 1
        [name] => Test
        [helptxt] => Helptext for item-id 1.
        [type_id] => 1
        [typetitle] => Number
        [typedesc] => Description Text type_id 1
      )
   [1] => Array
      (
        [item_id] => 2
        [name] => Test2
        [helptxt] => Helptext for item-id 2.
        [type_id] => 2
        [typetitle] => Value
        [typedesc] => Description Text type_id 2
      )
    And so on with all other items in the Array.
 )

因此，每次在$ MainArray中找到type_id時，應將[typetitle] + [typedesc]的內容添加到$ NewMainArray中。

我的大多數測試都以僅合並Array或僅添加一次$ IncludeArray結束。 甚至我的論壇搜索也無法幫助我解決。

數組是從2個單獨的DB請求創建的，我無法加入（已經嘗試了幾次）。 這與不同的WHERE和AND子句有關，這些子句不適用於聯接的請求。

我希望有一個聰明的方法來獲取所需的$ NewMainArray。 順便說一句，我使用PHP4，而且我是PHP的新手（至少針對這種問題）。

非常感謝你的幫助。

Answer 1

嘗試這個：

/**
 * Simulates relational table behaviour by joining data matching an ID value.
 * Works with single-nested arrays.
 *
 * @author Joel A. Villarreal Bertoldi
 *
 * @param  $source           array     The source array.
 * @param  $include_to_row   array     The row where we'll deposit the joined data.
 * @param  $match            string    Unique id field name.
 * 
 * @return array             Row with joined data.
 */

function includeFromArray($source, $include_to_row, $match)
{
  foreach ($source as $source_row)
  {
    if ($source_row[$match] == $include_to_row[$match])
    {
      foreach ($source_row as $source_column_key => $source_column_value)
      {
        $include_to_row[$source_column_key] = $source_column_value;
      }
    }
  }
  return $include_to_row;
}

for ($ma = 0; $ma < count($MainArray); $ma++)
  $NewMainArray[$ma] = includeFromArray($IncludeArray, $MainArray[$ma], "type_id");

結果：

Array
(
    [0] => Array
        (
            [item_id] => 1
            [name] => Test1
            [helptxt] => Helptext for item-id 1.
            [type_id] => 1
            [typetitle] => Number
            [typedesc] => Description Text type_id 1
        )


[1] => Array
    (
        [item_id] => 2
        [name] => Test2
        [helptxt] => Helptext for item-id 2.
        [type_id] => 2
        [typetitle] => Value
        [typedesc] => Description Text type_id 2
    )


) 

Answer 2

看一下array_merge_recursive函數;）

http://nl2.php.net/manual/en/function.array-merge-recursive.php