Access created_on from response object - get file action PODIO API - php

Question

Hello folks I'm trying to access the created_on object using code below but it is not working, I'm getting incorrect date January 1, 1970 12:00. Also tried
$item = PodioItem::get($item_id);
$file_id = "";
$created_on = "";
foreach ($item->files as $file) {
echo date('F j, Y h:i',strtotime($file->created_on))."<br>";
}
Below is the response object from print_r($file,true), I can access the other object without any issue like $file->file_id, $file->link. What I'm trying to accomplish is store the created_on data in a variable then create a function to check and grab the latest date, then grab the file_id of it.
PodioFile Object
[__attributes:PodioObject:private] => Array
(
[file_id] => 464714088
[link] => https://files.podio.com/464714088
[perma_link] =>
[thumbnail_link] =>
[hosted_by] => podio
[name] => KEjj4UQSUV.PDF
[description] =>
[mimetype] => application/pdf
[size] => 785849
[created_on] => 2017-12-08 23:03:36
[rights] => Array
(
[0] => download
[1] => view
[2] => delete
[3] => update
)
PodioFile Object
(
[__attributes:PodioObject:private] => Array
(
[file_id] => 464716575
[link] => https://files.podio.com/464716575
[perma_link] =>
[thumbnail_link] =>
[hosted_by] => podio
[name] => IiaCfJjwws.PDF
[description] =>
[mimetype] => application/pdf
[size] => 785849
[created_on] => 2017-12-08 23:15:30
[rights] => Array
(
[0] => download
[1] => view
[2] => delete
[3] => update
)
PodioFile Object
(
[__attributes:PodioObject:private] => Array
(
[file_id] => 464728331
[link] => https://files.podio.com/464728331
[perma_link] =>
[thumbnail_link] =>
[hosted_by] => podio
[name] => g6cmAeUCiV.PDF
[description] =>
[mimetype] => application/pdf
[size] => 785849
[created_on] => 2017-12-08 23:49:15
[rights] => Array
(
[0] => download
[1] => view
[2] => delete
[3] => update
)

Answer 1

Luckily found the answer on sample provided here - https://hotexamples.com/examples/-/PodioItem/filter/php-podioitem-filter-method-examples.html
date_format($file->created_on, 'Y/m/d H:i:s') did the trick