natsort ?

Hello:
I am trying to get an array sorted naturally.

I do something like

$list = scandir($dirname);
natsort($list);

According to the manual page the array values are sorted but
the keys remain the same. So running the array through a loop
does not produce the sorted order. I produces the original order.

How to I get a sorted version of the array that I can loop through
and produce the revised order?

journal-1.2020.php
journal-10.2020.php
journal-11.2020.php
journal-12.2020.php
journal-2.2020.php
journal-3.2020.php
journal-4.2020.php
journal-5.2020.php
journal-6.2020.php
journal-7.2020.php
journal-8.2020.php
journal-9.2020.php

Thank you for time and attention
Jeff K.