如何显示数组的键？

Question

我有一个数组看起来如此：

Array
(
 [0] => a
 [1] => b
 [3] => c
 [4] => d
 [15] => e
)

我希望得到类似的东西：

Array
(
 [0] => a
 [1] => b
 [2] => c
 [3] => d
 [4] => e
)

如何获得预期的效果？

Answer 1

array_values($array)

Easy as pie :)

Answer 2

$new_array = array_values($old_array); //this will return sorted  one