shuffle an array while preserving keys

shuffle_assoc

<?php

function shuffle_assoc($list) { 
  if (!is_array($list)) return $list; 
  $keys = array_keys($list); 
  shuffle($keys); 
  $random = array(); 
  foreach ($keys as $key) 
    $random[$key] = $list[$key]; 
  return $random; 
}

?>