每次单击ctrl + F5都会丢弃

Question

当我登录该网站时，我转到blabla.com/login /

HTML：

<?php
 if(isset($_POST["login"]))
 {
     $logind = $mebe->logind();
 }
 ?>
 <form action="<?php $_SERVER['PHP_SELF'];?>" method="post">
     <table width="100%" cellpadding="0" cellspacing="0">
         <tr>
             <td>Brugernavn</td>
             <td><input type="text" name="brugernavn" maxlength="300"></td>
         </tr>
         <tr>
             <td>Adgangskode</td>
             <td><input type="password" name="pass"></td>
         </tr>
         <tr>
             <td></td>
             <td><input type="submit" name="login" value="Log ind"></td>
         </tr>
     </table>                
 </form>

PHP：（登录功能在这里：）

function logind()
 {
     if($_POST["brugernavn"] == "")
     {
         $error = 1;    
     }
     if($_POST["pass"] == "")
     {
         $error = 1;    
     }
     if($error != 1)
     {
         if ($stmt = $this->mysqli->prepare("SELECT id, brugernavn, rank, ranknavn FROM bruger WHERE brugernavn = ? AND adgangskode = ?"))
         {
             $stmt->bind_param('ss', $brugernavn, $adgangskode);
             $brugernavn = $_POST["brugernavn"];
             $adgangskode = sha1($_POST["pass"]);


             $stmt->execute();
             $stmt->store_result();
             $stmt->bind_result($id, $brugernavn, $rank, $ranknavn);
             $stmt->fetch();
             $count = $stmt->num_rows;
             $stmt->close();

             if($count > 0)
             {
                 $_SESSION["logged_in"] = true;
                 $_SESSION["id"] = $id;
                 $_SESSION["brugernavn"] = $brugernavn;
                 $_SESSION["rank"] = $rank;
                 $_SESSION["ranknavn"] = $ranknavn;

                     if($_SESSION["logged_in"] == true and $_SESSION["rank"] >= 1)
                     {
                         ?>
                         <script language="javascript" type="text/javascript">  
                             window.location.href = "/wall/";  
                         </script> 
                         <?php
                     }
                     else
                     {
                         echo "Fejl..";    
                     }
             }
             else
             {
             ?>
             <div class="alert error fade in">
                 <p>Forkert Brugernavn / Password.</p>
                 <a class="close" data-dismiss="alert" href="#" aria-hidden="true"><i class="fa fa-times-circle"></i></a>
             </div>
             <?php
             }
         }
         //fejl
         else
         {
             echo 'Der opstod en fejl i erklæringen: ' . $this->mysqli->error;
         }
     }
     else
     {
     ?>
     <div class="alert error fade in">
         <p>Forkert, Prøv igen!</p>
         <a class="close" data-dismiss="alert" href="#" aria-hidden="true"><i class="fa fa-times-circle"></i></a>
     </div>
     <?php    
     }
 }

如果我使用标题（'Location：/ wall /'）;然后它将只是在登录页面上，并没有显示一个人以某种方式登录该网站。

EIDT

它关闭网站 - 仅限用户;

<?php
session_start();
include("phpFiler/fun.php");
$mebe = new mebe;
$db = $mebe->db_c();
error_reporting(E_ERROR);
if($_SESSION["logged_in"] == true)
{
?>

并向alle用户开放

<?php
session_start();
include("phpFiler/fun.php");
$mebe = new mebe;
$db = $mebe->db_c();
error_reporting(E_ERROR);
?>