组合两个数据数组

我想组合两个数组，其中每个数组都有相同的索引（此处为ID），但我不想删除重复的ID（对不起我的英语…）

First array name :   $data['student']
Second array name:  $data_student_name

我有这个阵列（$data['student']）

Array ( [0] => Array ( [id] => 16 [groups_id] => 1 [group_number] => 301 ) [1] => Array ( [id] => 17 [groups_id] => 1 [group_number] => 301 ) [2] => Array ( [id] => 18 [groups_id] => 1 [group_number] => 301 ) [3] => Array ( [id] => 5 [groups_id] => 1 [group_number] => 301 ) [4] => Array ( [id] => 14 [groups_id] => 1 [group_number] => 301 ) [5] => Array ( [id] => 18 [groups_id] => 2 [group_number] => 434 ) [6] => Array ( [id] => 19 [groups_id] => 2 [group_number] => 434 ) [7] => Array ( [id] => 19 [groups_id] => 1 [group_number] => 301 ) ) 

和这个阵列$data_student_name

Array ( [0] => Array ( [id] => 5 [firstname] => Bruno [sex] => M ) [1] => Array ( [id] => 14 [firstname] => David [sex] => M ) [2] => Array ( [id] => 16 [firstname] => Élyse [sex] => F ) [3] => Array ( [id] => 17 [firstname] => Jean [sex] => M ) [4] => Array ( [id] => 18 [firstname] => Julie [sex] => F ) [5] => Array ( [id] => 19 [firstname] => Marie [sex] => F ) )

我把我的两个阵列和这个结合起来

  $data['group_student']= array(); 
    foreach ($data_student_name as $arr) { 
        $match = false; 
        foreach ($data['student'] as $arr2) { 
            if ($arr['id'] == $arr2['id']) { 
               $match = true; 
               $data['group_student'][] = array_merge($arr, $arr2); 
               break; 
            } 
        } 
        if ( !$match ) $data['group_student'][] = $arr; 
    } 

我选择了这个结果（玛丽不重复：（）（$data['group_student']）

Array ( [0] => Array ( [id] => 5 [firstname] => Bruno [sex] => M [groups_id] => 1 [group_number] => 301 ) [1] => Array ( [id] => 14 [firstname] => David [sex] => M [groups_id] => 1 [group_number] => 301 ) [2] => Array ( [id] => 16 [firstname] => Élyse [sex] => F [groups_id] => 1 [group_number] => 301 ) [3] => Array ( [id] => 17 [firstname] => Jean [sex] => M [groups_id] => 1 [group_number] => 301 ) [4] => Array ( [id] => 18 [firstname] => Julie [sex] => F [groups_id] => 1 [group_number] => 301 ) [5] => Array ( [id] => 19 [firstname] => Marie [sex] => F [groups_id] => 2 [group_number] => 434 )  1 )) 

我想要这个结果（玛丽是重复的）

Array ( [0] => Array ( [id] => 5 [firstname] => Bruno [sex] => M [groups_id] => 1 [group_number] => 301 ) [1] => Array ( [id] => 14 [firstname] => David [sex] => M [groups_id] => 1 [group_number] => 301 ) [2] => Array ( [id] => 16 [firstname] => Élyse [sex] => F [groups_id] => 1 [group_number] => 301 ) [3] => Array ( [id] => 17 [firstname] => Jean [sex] => M [groups_id] => 1 [group_number] => 301 ) [4] => Array ( [id] => 18 [firstname] => Julie [sex] => F [groups_id] => 1 [group_number] => 301 ) [5] => Array ( [id] => 19 [firstname] => Marie [sex] => F [groups_id] => 2 [group_number] => 434 )  [6] => Array ( [id] => 19 [firstname] => Marie [sex] => F [groups_id] => 2 [group_number] => 301 )) 

我该怎么做？