- rtrim: documentation ( source)
- var_export: documentation ( source)
- array_values: documentation ( source)
- natsort: documentation ( source)
<?php
$data = [
'Light Blue1',
'Blue2',
'Blue1',
'Black3',
'Black12',
'Black2'
];
natsort($data);
$result = [];
foreach ($data as $value) {
$result[rtrim($value, '0..9')] = $value;
}
var_export(array_values($result));