<!DOCTYPE html>
<html>
<body>

<?php
function my_sort($a,$b)
{
if ($a==$b) return 0;
   return ($a<$b)?-1:1;
}

$arr=array("a"=>4,"b"=>2,"c"=>8,d=>"6");
uksort($arr,"my_sort");

foreach($arr as $x=>$x_value)
    {
    echo "Key=" . $x . ", Value=" . $x_value;
    echo "<br>";
    }

?>

</body>
</html>