array(0) {
}
<br>Value of session variable  Go to log out<pre>
    session_start();
    var_dump($_SESSION);
    $var = $_SESSION['user'];
    
    if(!isset($_SESSION['user'])) 
    {
        echo "<br>Value of session variable  ".$var."Go to log out";
    }
    else
    {
        echo "<br>Value of session variable  ".$var."Go Index";
    }
</pre>