php - 将数组 KEY 更改为子数组中的值

Question

这是我数据库的结果集

print_r($plan);
Array
(
    [0] => Array
        (
            [id] => 2
            [subscr_unit] => D
            [subscr_period] => 
            [subscr_fee] => 
        )

    [1] => Array
        (
            [id] => 3
            [subscr_unit] => M,Y
            [subscr_period] => 1,1
            [subscr_fee] => 90,1000
        )

    [2] => Array
        (
            [id] => 32
            [subscr_unit] => M,Y
            [subscr_period] => 1,1
            [subscr_fee] => 150,1500
        )

)

如何将 $plan[0] 更改为 $plan[value_of_id]

谢谢。

Answer 1

这不会就地执行，但是:

$new_plan = array();
foreach ($plan as $item)
{
  $new_plan[$item['id']] = $item;
}