在PHP中，如何遍歷數組並動態更改密鑰？

Question

我有一個數組$people 。 當我執行print_r($people) ，我得到以下結果：

[people] => Array
(
  [500] => Array
          (
              [firstName] => Fred
              [age] => 19
          )

  [501] => Array
          (
               [firstName] => Bob
               [age] => 12
          )
  [502] => Array
          (
               [firstName] => Steve
               [age] => 52
          )
)

我想更改所有鍵以使其看起來更“普通”，從0開始，然后從1、2等開始。如何實現此目的？ 為了澄清，我希望結果數組看起來像這樣：

    [people] => Array
(
  [0] => Array
          (
              [firstName] => Fred
              [age] => 19
          )

  [1] => Array
          (
               [firstName] => Bob
               [age] => 12
          )
  [2] => Array
          (
               [firstName] => Steve
               [age] => 52
          )
)

Answer 1

內置函數array_values（）將僅從數組中獲取值，而忽略鍵，而是返回從零開始重新編號的數組。

$people = array_values($people);

Answer 2

就像這樣：

foreach ($people as $value) {
  $people_new[] = $value;
}

Answer 3

嘗試這個

$people['people'] = array_values($people['people']);
print_r($people);