php - 需要清除session值，session值不能带入另一个页面

Question

我在页面之间传递 session 值时遇到问题。

我为这个问题苦苦挣扎了 3 天。

帮助我克服这个问题。

index.php(登录页面):

// initially declaring a variable with null value

!! include "conn.php";
   @session_start();
   if(isset($_SESSION['uname']))
   {
    $_SESSION['uname'] = " ";
   }
   else
   {
    $_SESSION['uname'] = " ";
   }
?>
//later assigning the value
$usrname = $_POST['uname'];
    $pass  = $_POST['pass'];
    $chk = mysqli_query($con,"select * from members WHERE username='$usrname'");
    while($value = mysqli_fetch_array($chk))
    {
        $realpassword = $value['password'];
        $_SESSION['uname'] = $_POST['uname'];
    }
    if(!isset($realpassword))
    {
        $realpassword  = "";
    }
    if($realpassword == $pass)
    {
         echo "<script>window.location.assign('dashboard.php');</script>";
    }

Dashboard.php(仪表板):

// In dashboard

@session_start();
include "conn.php";
if(isset($_SESSION['uname'])&&$_SESSION['uname']!="")
{
$uname =$_SESSION['uname'];
}
else{
 echo "<script>window.location.assign('http://www.website.com');</script>";
}

/// This page working fine

在第 3 页中:

/// Session value not carried into this page .. when this page loads automatically logouts and redirect into home page

session_start();
include "conn.php";
if(!isset($_SESSION['uname'])&&$_SESSION['uname']=="")
{
  echo "<script>window.location.assign('http://www.website.com');</script>";
}
$uname =$_SESSION['uname'];

Answer 1

你写道:

if(!isset($_SESSION['uname']) && $_SESSION['uname'] == "")
 {
 echo "<script>window.location.assign('http://www.website.com');</script>";
 }

应该是(或不是 AND):

if(!isset($_SESSION['uname']) OR $_SESSION['uname']==""){
    echo "<script>window.location.assign('http://www.website.com');</script>";
}