EngineGP/system/engine/pages.php

<?php
if (!DEFINED('EGP'))
    exit(header('Refresh: 0; URL=http://' . $_SERVER['SERVER_NAME'] . '/404'));

if (!$id)
    include(ENG . '404.php');

$sql->query('SELECT `name`, `file` FROM `pages` WHERE `id`="' . $id . '" LIMIT 1');

if (!$sql->num())
    include(ENG . '404.php');

$page = $sql->get();

$title = $page['name'];

$html->nav($page['name']);

$html->get('page');

$html->set('content', file_get_contents(FILES . 'pages/' . $page['file']));

$html->pack('main');
?>