[Admin]

Create a new PHP file, named newest.php for example, and put this in it:

PHP Code:

<?php

require('./global.php');
$numbersmembers=$DB_site->query_first('SELECT COUNT(*) AS users,MAX(userid) AS max FROM user');
$getnewestusers=$DB_site->query_first("SELECT userid,username FROM user WHERE userid=$numbersmembers[max]");
$newusername=$getnewestusers['username'];
$newuserid=$getnewestusers['userid'];

?>

and change the path to global.php.
Now you can use SSI to include this page in your homepage.
Good luck!