http://jp2.php.net/natsort
http://jp2.php.net/natcasesort
<?php
$array = ['a1', 'a2', 'a10'];
sort($array);
print_r($array);
/*
Array
(
[0] => a1
[1] => a10
[2] => a2
)
*/
natsort($array);
print_r($array);
/*
Array
(
[0] => a1
[2] => a2
[1] => a10
)
*/
$array = ['a1' ,'A2', 'a10'];
natsort($array);
print_r($array);
/*
Array
(
[1] => A2
[0] => a1
[2] => a10
)
*/
natcasesort($array);
print_r($array);
/*
Array
(
[0] => a1
[1] => A2
[2] => a10
)
*/
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