Randomize array

This function simply randomizes array values.

// I noticed that there is already a built-in function that
// does the same - so don't use mine ;-)
//
// --> shuffle($Array);
//
// http://de2.php.net/manual/de/function.shuffle.php
//

function RandomizeArray($array){

    // error check:
    $array = (!is_array($array)) ? array($array) : $array;

    $a = array();
    $max = count($array) + 10;

    while(count($array) > 0){       
        $e = array_shift($array);
        $r = rand(0, $max);

        // find a empty key:
        while (isset($a[$r])){
            $r = rand(0, $max);
        }       
        $a[$r] = $e;
    }

    ksort($a);
    $a = array_values($a);

    return $a;
}

/*
** Example:
*/

$test_array = array('why','dont','visit','www','jonas','john','de',':-)');

print implode(", ", $test_array);
print "\n";
print implode(", ", RandomizeArray($test_array));

/*
Example output:

why, dont, visit, www, jonas, john, de, :-)
www, de, jonas, john, visit, why, :-), dont
*/