index.php

<?php

if (session_status() == PHP_SESSION_NONE)
{
    session_start();
}

require_once 'config.php';
require_once 'functions.php';
require_once 'classes/User.php';
require 'classes/flashmessages.php';

if (User::loggedIn())
{
    $user = new User($_SESSION['id']);
    $updateQuery = $db->prepare('UPDATE users SET ip_last = :ip_last WHERE id = :id');
    $updateQuery->execute([
        ':ip_last' => getIP(),
        ':id' => $_SESSION['id'],
    ]);
    $insertQuery = $db->prepare('INSERT INTO activiteiten(DT, user_id, ip_address) VALUES(:DT, :user_id, :ip_address)');
    $insertQuery->execute([
        ':DT' => date("Y-m-d H:i:s"),
        ':user_id' => $_SESSION['id'],
        ':ip_address' => getIP()
    ]);
}

$error = null;
if(isset($_GET['p']))
{
    $page = $_GET['p'];
    $allowedFiles = ['home', 'profiel', 'illegaaladd', 'illegaalov', 'gebruikersov', 'activiteiten', 'gezochtov', 'gezochtadd', 'beslagov', 'beslagadd', 'strafbladov', 'strafbladadd', 'index', 'logout', 'cellenadd', 'cellenov', 'gebruikersadd', 'gebruikersov', 'gevangenenadd', 'gevangenenov', 'noodoproepen', 'oproepmaken'];
    if($page && in_array($page, $allowedFiles))
    {
        include("pages/$page.php");
    }
    else
    {
        include('pages/index.php');
    }
}
else
{
    include('pages/index.php');
}