<?php
if($un==""){
   include("iddup2.php");
   exit();
}

include("../include/connect.php");
$user=trim($user);
$query=mysql_query("select * from $biz_user where user='$un'");
$num=mysql_num_rows($query);

if ($num>0) {
include("iddup2.php"); //用戶名重復
exit();

}

$query=mysql_query("select * from en_user where loginname='$un'");
$num=mysql_num_rows($query);
if ($num>0) {
include("iddup2.php"); //用戶名重復
exit();
}

include("iddup3.php");

?>