登录界面弹出框有关问题

登录界面弹出框问题

PHP code

<?php //session_start();
?> 
    

        
 
        
 
        
 
        


Email:
                

            


密码:
                

            


            




<?php require 'connect_to_database.php';
$email=$_POST["email"];
$password=$_POST["password"];
$dt=mysql_query("select * from userinfo where email='".$email."' and password='".$password."'");
if($dt == true ) //访问数据库成功
{
    $row = mysql_fetch_row($dt);
    if($row == false)//是否从数据库里提出到了东西
    {
        echo '';
            
        }
        else
        {
            $_SESSION['email']=$email;
            $_SESSION['password']=$password;
            echo '';       
        }
    }
}
?>