watch.twip-network.org/index.php

<?php
session_start();
require_once 'config.php';

$paths_to_check = array();
$paths_to_check[] = "pages/global";


$page = basename($_SERVER['QUERY_STRING']);
$nav = file_get_contents("$template_dir/navigation.html");

if(empty($page)){
    $page = 'index';
}

// Check if user is logged in
if (isset($_SESSION['user_id'])) {
    if ($user['isAdmin'] == 1) {
        $paths_to_check[] = "pages/admin";
    }

    $paths_to_check[] = "pages/user";

    // Fetch user details
    $user_id = $_SESSION['user_id'];
    $query = "SELECT * FROM users WHERE id = $user_id";
    $result = mysqli_query($mysqli, $query);
    $user = mysqli_fetch_assoc($result);
}

$page_file = "$template_dir/404.html";

foreach($paths_to_check as $page_dir){
    $page_file_tmp = "$page_dir/$page.html";
    if(file_exists($page_file_tmp)){
        $page_file = $page_file_tmp;
        break;
    }
}
ob_start();
include $page_file;
$page_data = ob_get_clean();

$page_data = str_replace("__NAV_TEMPLATE__", $nav, $page_data);

echo $page_data;
?>