douzhong5902 2013-04-05 22:02
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两个MySQL结果集到嵌套数组

I'm having two tables of data "Item" and "Subsidiary" with the following structure:

ITEM ItmCod ItmName

SUBSIDIARY ItmCodParent ItmCodChild

I need to show a list of Items each with a list of its subsidiaries, like in this json:

{
   "ItmCod":1,
   "ItmName":"BogusItem1",
   "Subsidiaries":
   [
      {
         "ItmCodParent":1,
         "ItmCodChild":15
      },{
         "ItmCodParent":1,
         "ItmCodChild":16      
      }
   ]
},{
   "ItmCod":2,
   "ItmName":"BogusItem2",
   "Subsidiaries":
   [
      {
         "ItmCodParent":2,
         "ItmCodChild":17
      },{
         "ItmCodParent":2,
         "ItmCodChild":18      
      }
   ]
}

How can I add the second result set to the first one to have the nested as shown above. I have this code so far:

$sql = "SELECT ItmCod, ItmName FROM item";

$item_rows = array();

while($item_row = $database->fetch_array_assoc($item_result)){

   $sub_sql = "SELECT ItmCodParent, ItmCodChild FROM subsidiary WHERE subsidiary.ItmCodParent = " . $item_row["ItmCod"];

   $sub_result = $database->query($sub_sql);

   $sub_rows = array();

   while($sub_row = $database->fetch_array_assoc($sub_result)){
      $sub_rows[] = $sub_row;
   }

   $item_rows[] = $item_row;
}

print json_encode($item_rows);

Thanks.

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3条回答 默认 最新

  • drake900918 2013-04-05 22:13
    关注

    just above the line

    $item_rows[] = $item_row;
    

    simply add

    $item_row['Subsidiaries']=$sub_rows;
    
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