- var_dump: documentation ( source)
- natsort: documentation ( source)
<?php
$datas = array(
'10:00:00 - 11:00:00',
'11:00:00 - 12:00:00',
'12:00:00 - 13:00:00',
'13:00:00 - 14:00:00',
'8:00:00 - 9:00:00',
'9:00:00 - 10:00:00',
);
var_dump($datas);
natsort($datas);
var_dump($datas);