在注销页面中创建$ _SESSION [“logged_user”] =“”而不是销毁会话

Question

I need to display different content for logging users and others. So I make that part as following code.

<?php 
            if($_SESSION["logged_user"]=="")
            {
                ?>        
                <div id="test">Display for un-logged users</div>        
                <?php
            }
            else
            {
                ?>        
                <div id="test>Display for Logged Users</div>        
                <?php
            }
?>

I can't destroy all sessions in sign-out page because of I use "$_SESSION["logged_user"]" in every page.

So I make sign-out page like this.

<?php
session_start();
$_SESSION["logged_user"]="";
?>

I just empty the $_SESSION["logged_user"] instead of destroying session.

Is it a bad idea? If it is a bad idea what is the solution for me?

Answer 1

<?php
// remove all session variables
session_unset();

// destroy the session
session_destroy();
?>