PHP：根據特定的鍵和值合並數組的元素

Question

為此，我嘗試了20種不同的想法，但我想我已經走了很多圈，以至於我都不記得我從哪里開始。 我敢肯定這也是一個簡單的方法。

我有一個數組；

Array
(
    [0] => Array
        (
            [employee] => 15
            [first_name] => Person1
            [surname] => Person1
            [totaltime] => 183.75
            [type] => 0

        )

    [1] => Array
        (
            [employee] => 15
            [first_name] => Person1
            [surname] => Person1
            [totaltime] => 64.50
            [type] => 1            
        )

    [2] => Array
        (
            [employee] => 23
            [first_name] => Person2
            [surname] => Person2
            [totaltime] => 2.00
            [type] => 0
        )

    [3] => Array
        (
            [employee] => 51
            [first_name] => Person3 
            [surname] => Person3
            [totaltime] => 119.25
            [type] => 0            
        )

    [4] => Array
        (
            [employee] => 59
            [first_name] => Person4
            [surname] => Person4
            [totaltime] => 170.75
            [type] => 0
        )
)

我需要合並employee人數相同的元素，並根據type將totaltime元素添加到新鍵中。 這就是我的意思。

Array
(
    [0] => Array
        (
            [employee] => 15
            [first_name] => Person1
            [surname] => Person1
            [totaltime_type_0] => 183.75
            [totaltime_type_1] => 64.50

        )       

    [1] => Array
        (
            [employee] => 23
            [first_name] => Person2
            [surname] => Person2
            [totaltime_type_0] => 2.00
            [totaltime_type_1] => 0
        )

    [2] => Array
        (
            [employee] => 51
            [first_name] => Person3 
            [surname] => Person3
            [totaltime_type_0] => 119.25
            [totaltime_type_1] => 0            
        )

    [3] => Array
        (
            [employee] => 59
            [first_name] => Person4
            [surname] => Person4
            [totaltime_type_0] => 170.75
            [totaltime_type_1] => 0
        )
)

我可以在查詢級別執行此操作，但是創建原始數組的SQL非常復雜，我只希望維護它的一個版本。

關於最佳方法的任何建議都將真正幫助我重回正軌。 並且將不勝感激。

Answer 1

嘗試這個 ：

$res      = array();
foreach($your_array as $val){
   $res[$val['employee']]['employee']         = $val['employee'];
   $res[$val['employee']]['first_name']       = $val['first_name'];
   $res[$val['employee']]['surname']          = $val['surname'];
   if($val['type'] == 0){
      if(array_key_exists("totaltime_type_0",$res[$val['employee']])){
         $res[$val['employee']]['totaltime_type_0'] += $val['totaltime'];
      }
      else{
         $res[$val['employee']]['totaltime_type_0'] = $val['totaltime'];
      }
   }
   if($val['type'] == 1){
      if(array_key_exists("totaltime_type_1",$res[$val['employee']])){
         $res[$val['employee']]['totaltime_type_1'] += $val['totaltime'];
      }
      else{
         $res[$val['employee']]['totaltime_type_1'] = $val['totaltime'];
      }
   }
}

echo "<pre>";
print_r(array_values($res));