我的php应用程序中遇到了双重登录问题？

Question

我通过登录弹出窗口登录我的php应用程序前端我的php应用程序，但问题是当我第一次输入我的登录凭据时它不会重定向到我我的破折号无聊它将重定向到我的前端页面但我登录再次使用相同的凭证或仪表板的不同用户的其他有效凭证，它将登录仪表板。

if(isset($_POST['login']))
{

    //for super admin login detials
    $username = cleanstr_header($_POST['username']);
    $password = cleanstr_header($_POST['password']);
    $adminresu = mysql_query("select * from users where username='$username' and password=md5('".$password."')");
    if(mysql_num_rows($adminresu) > 0)
    {
        $adminrow = mysql_fetch_assoc($adminresu);

                    //start super admin login 
        if(isset($adminrow['id']))
        {
            unset($adminrow['password']);
            $_SESSION['Auth'] = $adminrow;

            if($_SESSION['Auth']['role'] == 'admin')
            {
                //MENU MANAGEMENT SECTION
                $query_privileges = mysql_query("select * from privileges where user_id='".$adminrow ['id']."'");
                @$row_privileges = mysql_fetch_assoc($query_privileges);
                @$_SESSION['Auth']['privileges'] = $row_privileges;
                @$_SESSION['Auth']['privileges']['menu_grandParent_menu'] = explode(', ',$_SESSION['Auth']['privileges']['menu_grandParent_menu']);
                @$_SESSION['Auth']['privileges']['menu_parent_menu'] = explode(', ',$_SESSION['Auth']['privileges']['menu_parent_menu']);
                @$_SESSION['Auth']['privileges']['menu_sub_menu'] = explode(', ',$_SESSION['Auth']['privileges']['menu_sub_menu']);
                @$_SESSION['Auth']['privileges']['menu_footer_menu'] = explode(', ',$_SESSION['Auth']['privileges']['menu_footer_menu']);

                //NEWS MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['news_add_news'] = explode(', ',$_SESSION['Auth']['privileges']['news_add_news']);

                //TENDER MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['tender_add_tender'] = explode(', ',$_SESSION['Auth']['privileges']['tender_add_tender']);
                @$_SESSION['Auth']['privileges']['tender_expired_tender'] = explode(', ',$_SESSION['Auth']['privileges']['tender_expired_tender']);
                @$_SESSION['Auth']['privileges']['tender_application_tender'] = explode(', ',$_SESSION['Auth']['privileges']['tender_application_tender']);

                //GALLARY MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['gallery_photo_gallery'] = explode(', ',$_SESSION['Auth']['privileges']['gallery_photo_gallery']);
                @$_SESSION['Auth']['privileges']['gallery_video_gallery'] = explode(', ',$_SESSION['Auth']['privileges']['gallery_video_gallery']);

                //SLIDER MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['slider_header_slider'] = explode(', ',$_SESSION['Auth']['privileges']['slider_header_slider']);
                @$_SESSION['Auth']['privileges']['slider_promotional_slider'] = explode(', ',$_SESSION['Auth']['privileges']['slider_promotional_slider']);

                //DIGNITARIES MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['dignitaries_statutory'] = explode(', ',$_SESSION['Auth']['privileges']['dignitaries_statutory']);
                @$_SESSION['Auth']['privileges']['dignitaries_registrar'] = explode(', ',$_SESSION['Auth']['privileges']['dignitaries_registrar']);

                               //DEAPARTMENT MANAGEMENT SECTION
                                @$_SESSION['Auth']['privileges']['add_links'] = explode(', ',$_SESSION['Auth']['privileges']['add_links']);
                @$_SESSION['Auth']['privileges']['add_departments'] = explode(', ',$_SESSION['Auth']['privileges']['add_departments']);

                //USER SECTION
                //USER MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['user_add_user'] = explode(', ',$_SESSION['Auth']['privileges']['user_add_user']);

                //PRIVILEGES MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['privileges_assing_privileges'] = explode(', ',$_SESSION['Auth']['privileges']['privileges_assing_privileges']);


                //BCUD SECTION
                //LINK ACTIVATION MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['bcud_link_activation'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_link_activation']);

                //LETTERS MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['bcud_letters'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_letters']);

                //SUBJECTS MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['bcud_study'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_study']);
                @$_SESSION['Auth']['privileges']['bcud_faculty'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_faculty']);
                @$_SESSION['Auth']['privileges']['bcud_course'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_course']);
                @$_SESSION['Auth']['privileges']['bcud_group'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_group']);
                @$_SESSION['Auth']['privileges']['bcud_subject'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_subject']);

                //DISTRICT MANAGEMENT SECTION
                @$_SESSION['Auth']['privileges']['bcud_district'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_district']);
                @$_SESSION['Auth']['privileges']['bcud_talukas'] = explode(', ',$_SESSION['Auth']['privileges']['bcud_talukas']);

            }
             echo '<script type="text/javascript">window.location="admin/admin/index.php";</script>';
             exit;
        }
   }
   //start college login
   elseif(mysql_num_rows($adminresu) == 0)
   {
    //for college login detials
    $colgresu = mysql_query("select * from college_login where username='$username' and password=md5('".$password."')");
    $colgrow = mysql_fetch_assoc($colgresu);
    if(mysql_num_rows($colgresu)>0)
    {
        if(isset($colgrow['id']) and $colgrow['role'] == 'college_member')
        {
            unset($colgrow['password']);
            $_SESSION['Auth'] = $colgrow;
            echo '<script type="text/javascript">window.location="admin/user_admin/index.php";</script>';
            exit; 
        }
    }
    else
    { 
        $loginError= "The email or password you entered is incorrect."; 
    }
}
//  }