session.php

 <?php
 session_start();
$uid = $_SESSION['uid'];
$email= $_SESSION['username'];
//jika session username belum dibuat, atau session username kosong
if (!isset($_SESSION['username']) || empty($_SESSION['username'])) {
    //redirect ke halaman login
    header('location:index.php');
}
 //$uid = $_SESSION['username'];
//$uid=2; // User Session ID
?>