從數組中檢索值，然後將其添加到新的PHP

Question

我有一個大問題，因爲我不知道如何從該數組中獲取值，其中值是鍵入新數組的值。這是我的源陣列

Array 
(
    [0] => Array 
     (
      [ID] => 250602 
      [NAME] => qwe 
     ) 

    [1] => Array 
     (
      [ID] => 250603 
      [NAME] => wer 
     ) 

    [2] => Array 
     (
      [ID] => 250629 
      [NAME] => sdf 
     ) 

    [3] => Array 
     (
      [ID] => 250629 
      [NAME] => xcv 
     ) 

    [4] => Array 
     (
      [ID] => 250629 
      [NAME] => fghfgh 
     ) 

    [5] => Array 
     (
      [ID] => 250601 
      [NAME] => pggd 
     ) 

    [6] => Array 
     (
      [ID] => 250601 
      [NAME] => dfgdfg 
     ) 

    [7] => Array 
     (
      [ID] => 250606 
      [NAME] => dfgdfg 
     ) 
) 

當ID相同，將創建一個新的表看起來像如何foreach循環這樣的id = 250629

[NAME] => Array 
     (
      [0] => sdf 
      [1] => xcv 
      [2] => fghfgh 
     ) 

Answer 1

？

<?php 
$final_array=array(); 
foreach($arrays as $sub_arr){ //it will traverse loop for all sub-arrays 
    $final_array[$sub_arr['ID']][]=$sub_arr['NAME'];  
} 
print_r($final_array); //you should see expected output. 
?> 

將產品下面的輸出爲您給出的數據：

Array 
(
    [250602] => Array 
     (
      [0] => qwe 
     ) 

    [250603] => Array 
     (
      [0] => wer 
     ) 

    [250629] => Array 
     (
      [0] => sdf 
      [1] => xcv 
      [2] => fghfgh 
     ) 

    [250601] => Array 
     (
      [0] => pggd 
      [1] => dfgdfg 
     ) 

    [250606] => Array 
     (
      [0] => dfgdfg 
     ) 

) 

Working Demo

Answer 2

喜歡這個

$by_name = array(); 
foreach($your_array as $item) 
    $by_name[$item['ID']] []= $item['name']; 

這使得使用PHP的懶惰數組初始化（[]=創建新數組隱式）。

如果你從mysql獲得你的數組，你也可以考慮GROUP_CONCAT。