restrict new users by username & IP address

I have it so a user cannot register with a new user name, but I would also like to restrict it so that a user cannot register on the same computer with the same IP address. Is there a way to restrict both of these independently of each other?

create two separate recordsets. one to filter the username column with the username that was entered, the other to filter the IP address column with the $_SERVER["REMOTE_ADDR"] variabel:
<?php echo((isset($_SERVER["REMOTE_ADDR"]))?$_SERVER["REMOTE_ADDR"]:"") ?>



for each recordset, a variable will be created containing the number of rows:
$totalRows_<Recordset Name>


use the Server Validation - number validation

you will need to create one for each the user name recordset, and the ip recordset, use the total rows variable for the server variable and set the minimum to -1 and maximum to 0.

this will cause validation to pass only if both recordsets are empty.