- print_r: documentation ( source)
- usort: documentation ( source)
<?php
$display = [
'dateChanged' => '2019-09-17T19:42:56',
'dateChanged' => '2018-09-17T19:42:56',
'dateChanged' => '2017-09-17T19:42:56',
'dateChanged' => '2030-09-17T19:42:56'
];
usort($display, function($a, $b) {
$ad = new DateTime($a['dateChanged']);
$bd = new DateTime($b['dateChanged']);
if ($ad == $bd) {
return 0;
}
return $ad < $bd ? -1 : 1;
});
print_r($display);