users.php

<?php
    include("config.php");
    $sql=$dbh->prepare("SELECT name FROM chatters");
    $sql->execute();
    $aktip = "";

    while($r=$sql->fetch()){
         if(isset($_SESSION['user'])){
            if($_SESSION['user'] == $r['name']){
                $aktip = "<a href='logout.php' class='keluar'>Keluar</a>";
            }
        }
        echo "<div class='user'>{$r['name']} $aktip</div>";
    }
?>