PHP: suche Code

<?php
function get_variants($letters){
    $words = array();
    $word = $letters;
    # $numbers equals the maximum number of possibilities
    $numbers = factorial(strlen($letters));

    for($i = 1;$i<=$numbers[0];$i++) {
        while(in_array($word,$words)){
            $word = str_shuffle($word);
        }
        array_push($words,$word);
    }
    sort($words);
    return $words;
}
# returns $integer!
function factorial ($integer){
    $num = 1;
    $return[1] = 1;
    for($i = 2;$i<=$integer;$i++){
        $num *= $i;
        $return[$i] = $num;
    }
    rsort($return);
    return $return;
}


$string = 'hablue';
print_r(get_variants($string));
?>

foreach(get_variants($string) as $v){
  echo $v."<br />\n";
}