protected function generatePassword($length = 9)
{
$sets = ['abcdefghjkmnpqrstuvwxyz', 'ABCDEFGHJKMNPQRSTUVWXYZ', '23456789'];
$all = '';
$password = '';
foreach ($sets as $set) {
$password .= $set[array_rand(str_split($set))];
$all .= $set;
}
$all = str_split($all);
for ($i = 0; $i < $length - count($sets); $i++) {
$password .= $all[array_rand($all)];
}
$password = str_shuffle($password);
return $password;
}