<?php
function kshuffle(&$array) {
    if(!is_array($array) || empty($array)) {
        return false;
    }
    $tmp = array();
    foreach($array as $key => $value) {
        $tmp[] = array('k' => $key, 'v' => $value);
    }
    shuffle($tmp);
    $array = array();
    foreach($tmp as $entry) {
        $array[$entry['k']] = $entry['v'];
    }
    return true;
}