Gerar password aleatória

<?php
$chars = '23456789ABCDEFGHIJKLMNPQRSTUVWXYZabcdefghjkpqrstuvwxyz';
$maxChars=strlen($chars)-1;
$token = '';
for ($i = 0; $i < 10; $i++)
$token .= $chars[mt_rand(0, $maxChars)];
?>