Insert multiple users and random passwords Php&mysql - php

Question

I am struggling to create multiple user&password and insert it in mysql column.
inserting multiple username is working but not multiple random password.
mysql table "users" - columns 'user' & 'password' primary key = user column
How it works:
A user enters a username and numbers (how many user & pass to create) in an HTML form.
The code uses the submitted username and adds a serial from "1" to limit (submitted number).
Example input:
submitted user is john
submitted numbers is 20
Example result:
john1, john2... john20
In the future when the user requests another 10 user & pass with same name "john" the number will start from 21 (john21, john22... john30)
adding another series is not done yet any help and tips are welcome.
My code:
function muser() {
function randomPassword() {
$alphabet = "abcdefghjkmnpqrstuwxyz23456789"; // skip 0OoIl1
$pass = array();
$alphaLength = strlen($alphabet) - 1;
for ($i = 0; $i < 6; $i++) {
$n = rand(0, $alphaLength);
$pass[] = $alphabet[$n];
}
return implode($pass);
}
if(isset($_REQUEST['submit'])) {
$user_input_user = $_REQUEST["user"];
$user_input_limit = $_REQUEST["limit"];
$ipass = randomPassword();
}
$uiuser = $user_input_user;
$uilimit = $user_input_limit;
$limit = $uilimit;
for($x = 1; $x <= $limit; $x++) {
$queryuser[] = "('$uiuser$x', '$ipass'),";
}
return implode($queryuser);
}
$mquery = 'INSERT INTO `users` (`user`, `pass`) VALUES ';
$imuser = muser();
$fquery = substr($imuser, 0, -1);
$sql = $mquery . $fquery .';';

Answer 1

The problem is caused because you give value to $ipass only once.
change the for loop from this
for($x = 1; $x <= $limit; $x++) {
$queryuser[] = "('$uiuser$x', '$ipass'),";
}
to
for($x = 1; $x <= $limit; $x++) {
$queryuser[] = "('$uiuser$x', '$ipass'),";
$ipass = randomPassword();
}