Retrieving lastvisit, should be easy...

[Admin]

If you use query_first() you don't need fetch_array(), because it does that internally.

So instead of:

$getuser=$DB_site->query("SELECT * FROM user WHERE userid=$bbuserinfo[userid]");

while ($user=$DB_site->fetch_array($getuser)) {
$username=$user[username];
$userlastvisit=$user['lastvisit'];
$newposts="<a href=\"search.php?s=$session[sessionhash]&action=getnew\">View New Posts</a>";
$logout="<smallfont><a href=\"member.php?s=$session[sessionhash]&action=logout\">Log Out</a>";
$markallread="<a href=\"member.php?s=$session[sessionhash]&action=markread\">Mark All Forums Read</a>";
}

You just use this:

$user=$DB_site->query_first("SELECT * FROM user WHERE userid=$bbuserinfo[userid]");

$username=$user[username];
$userlastvisit=$user['lastvisit'];
$newposts="<a href=\"search.php?s=$session[sessionhash]&action=getnew\">View New Posts</a>";
$logout="<smallfont><a href=\"member.php?s=$session[sessionhash]&action=logout\">Log Out</a>";
$markallread="<a href=\"member.php?s=$session[sessionhash]&action=markread\">Mark All Forums Read</a>";