php中的会话更改在多个选项卡上打开时记录的用户数据

Question

plz建议我......

我的项目有3个部门。 paginetion，ctp，machine 当用户登录后，登录后会进入各自的部门页面。 但是当我在浏览器上的不同选项卡上打开两个登录时。网页自动更改用户登录。

for ex--如果我登录分页部门。在一个选项卡上，并在浏览器的另一个选项卡上使用ctp dept登录，然后将分页部门的数据加载到ctp部门，并将ctp的用户更改为分页用户。

下面是我的登录代码

<?php 
  $usermaster = new usermaster;
  if(isset($_POST['login']))
  {   
$city = make_safe($_POST['city']);
        $username = make_safe($_POST['username']);
        $password = make_safe($_POST['password']);          
        $result = $usermaster->select($usermaster->table,'',"username='$username' AND password='$password' AND city='$city'",'');

    if(count($result))
        {        
           $_SESSION ['Auth']['id'] = $result['id'];        
           $_SESSION['Auth'] = $result[0];        
           unset($_SESSION['Auth']['password']);                  
           $_SESSION['city'] = $_REQUEST['city'];                  
          if($_SESSION['Auth']['department'] == 'Pagination')
          {
             header ("Location: main.php");
              exit;
          }
          else
          if($_SESSION['Auth']['department'] == 'CTP')
          {
             header ("Location: ctp_final.php");
              exit;
          }
          else
          if($_SESSION['Auth']['department'] == 'Machine')
          {
             header ("Location: machine_final.php");
              exit;
          } 
          else
          if($_SESSION['Auth']['department'] == 'LocalAdmin')
          {
             header ("Location: city_report.php");
              exit;
          }     
           }
          else
          { 
            $_SESSION['message1'] = "Wrong user Name or password";
             header ("Location: index.php");    
              exit;

          }          

  }
 ?> 

此代码是每个部门页面上的检查会话

if(!isset($_SESSION['Auth']['id']) || (trim($_SESSION['Auth']['id']) == '')) {
         header('Location: index.php');
        exit();
    }