index.php

<?php

require __DIR__ . '/vendor/autoload.php';
require __DIR__ . '/helpers/connection.php';
require __DIR__ . '/helpers/sanitizer.php';
require __DIR__ . '/config.php';

date_default_timezone_set('America/Sao_Paulo');
session_start();

$fb = new Facebook\Facebook([
   'app_id' => $appId_facebook,
   'app_secret' => $secret_facebook,
   'default_graph_version' => 'v3.2',
]);

$user = null;

if (isset($_SESSION['fb_access_token'])) {
    try {
        // Proceed knowing you have a logged in user who's authenticated.
        $response = $fb->get('/me?fields=id,name', $_SESSION['fb_access_token']);
        $user_profile = $response->getGraphUser();
        $user = $user_profile['id'];
    } catch (FacebookApiException $e) {
        error_log($e);
        $user = null;
    }
} else {
    $helper = $fb->getRedirectLoginHelper();
    $permissions = ['email'];
    $loginUrl = $helper->getLoginUrl($url_full.'/?p=fb-callback&ant='.urlencode($_SERVER['REQUEST_URI']), $permissions);
}

$page = 'index';
if(isset($_GET['p'])&&$_GET['p']!='') {
    $page  = $_GET['p'];
}

// Configuracoes templates
$no_template_pages = array(
   'logout',
   'votar',
   'comentar',
   'votarcomentario',
   'fb-callback',
   'search',
   'vote'
);
$header = 'view/template/header.php';
$footer = 'view/template/footer.php';

$template = !in_array($page, $no_template_pages);
if ($template) {
    include($header);
}
if(file_exists("view/" . $page . ".php")) {
    include('view/' . $page . '.php');
} else {
    include('view/error.php');
}
if ($template) {
    include($footer);
}

if ($connection) {
    $connection->close();
}