[sort hex] Sort an array of hexadecimal numbers in PHP #php

sort_hex.php

<?php
$hexValues = array(
    dechex(10), // a
    dechex(42), // 2a
    dechex(111), // 6f
    dechex(78), // 4e
    dechex(16) // 10
);

usort($hexValues, function($a, $b){
    $a_dec = hexdec($a);
    $b_dec = hexdec($b);
    if ($a_dec == $b_dec){
        return 0;
    } elseif ($a_dec > $b_dec){
        return -1;
    } else {
        return 1;
    }
});

var_dump($hexValues);
/* output
array(5) {
  [0] =>
  string(2) "6f"
  [1] =>
  string(2) "4e"
  [2] =>
  string(2) "2a"
  [3] =>
  string(2) "10"
  [4] =>
  string(1) "a"
}
*/