- var_dump: documentation ( source)
- strcmp: documentation ( source)
- usort: documentation ( source)
<?php
$arr = ['12', '14.25', '14.25', '17.10', '17.10', '14.25', '21.00', '21.00'];
usort($arr, function($a,$b) {
return strcmp($a,$b);
});
var_dump($arr);