creando un generador de numero y letras

[privatefta]

tengo este codigo pero no me muestra resultado

Código PHP:

<?php
function createpassword() {
$conn = @mysql_connect('localhost','1414','9Js') or sqlerror();
mysql_select_db('test', $conn);
$sql = mysql_query("SELECT * FROM settings WHERE id='1'", $conn);
$line=mysql_fetch_array($sql);
    $chars = $line["rndpasschr"];
    srand((double)microtime()*1000000);
    $i = 0;
    $pass = "";
    while ($i <= $line["rndpasschrlength"]-1) {
        $num = rand() % 33;
        $tmp = substr($chars, $num, 1);
        $pass = $pass . $tmp;
        $i++;
    }
    return($pass);
}
if (isset($_POST["addgen"]) and $_POST["addgen"] == "random") {
    $adduserstatus = "10";
    $password = createpassword();
}
?>
<form id="addgen" name="addgen" action="" method="post">
 <input type="submit" name="badduser" value="random" tabindex="20" class="submit" accesskey="r" title="(ALT+R)">
</form>
<?php if ($adduserstatus == "10") { print($password); } ?>