在PHP中，如何遍历数组并动态更改密钥？

Question

我有一个数组$people 。 当我执行print_r($people) ，我得到以下结果：

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

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

我想更改所有键以使其看起来更“普通”，从0开始，然后从1、2等开始。如何实现此目的？ 为了澄清，我希望结果数组看起来像这样：

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

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

Answer 1

内置函数array_values（）将仅从数组中获取值，而忽略键，而是返回从零开始重新编号的数组。

$people = array_values($people);

Answer 2

就像这样：

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

Answer 3

尝试这个

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