PHP 遇到个问题。。

写个注册页面，遇到个问题，看了半天，看不明白。。代码如下PHP code:
<?php
//注册页面

//include("mysql.php") ;
mysql_connect("localhost","root","zd123456") ;
mysql_select_db("mysql") ;

if($_POST){

$landname=$_POST['landname'] ;
$password=$_POST['password'] ;
//echo $password ;
//die() ;
$repassword=$_POST['repassword'] ;
$email =$_POST['email'] ;
//echo $password ;
//echo $repassword ;
//echo $email ;
//if(empty($password)){
// echo "请输入密码。" ;
// die() ;
//}
if($password!==$repassword){
echo "两次密码不一致。" ;
die() ;
}
//check name
$name_sql= "select count(*) from `login` where `landname`='".$landname."'" ;
$name_que=mysql_query($name_sql) ;
$name_Num=mysql_fetch_object($name_que) ;//就是这里出错了
echo $name_Num ;
if($name_Num==1)
echo "<script language='javascript'>alter('该用户名已注册，请更换注册名')</script>";
else
$insert_sql = "insert into `login`(`landname`,`password`,`email`) values('".$landname."','".$password."','".$email."') " ;
$Insert =mysql_query($insert_sql) ;
echo "<script language='JavaScript'>alter('注册成功');</script>" ;

}
?>


错误代码如下：
  Catchable fatal error: Object