asort php code example

Example 1: php rsort retain keys

//Sort an array in reverse order and maintain index association
arsort($myArray)

Example 2: usort in php

<?php

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

$a=array(4,2,8,6);
usort($a,"my_sort");
?>