sakura/app/Controllers/HomeController.php

<?php
/**
 * Holds the homepage controller.
 * @package Sakura
 */

namespace Sakura\Controllers;

use Sakura\Config;
use Sakura\DB;
use Sakura\News\Post;
use Sakura\Template;
use Sakura\User;
use stdClass;

/**
 * Homepage controller.
 * @package Sakura
 * @author Julian van de Groep <me@flash.moe>
 */
class HomeController extends Controller
{
    /**
     * Serves the site index.
     * @return string
     */
    public function index(): string
    {
        // Get the newest user
        $newestUserId = DB::table('users')
            ->where('rank_main', '!=', config('rank.banned'))
            ->where('user_activated', 1)
            ->where('user_restricted', 0)
            ->orderBy('user_id', 'desc')
            ->limit(1)
            ->get(['user_id']);

        $newestUser = User::construct($newestUserId ? $newestUserId[0]->user_id : 0);

        // Get all the currently online users
        $timeRange = time() - 120;

        // Create a storage variable
        $onlineUsers = [];

        // Get all online users
        $getOnline = DB::table('users')
            ->where('user_last_online', '>', $timeRange)
            ->get(['user_id']);
        $getOnline = array_column($getOnline, 'user_id');

        foreach ($getOnline as $user) {
            $user = User::construct($user);

            // Do a second check
            if (!$user->isOnline()) {
                continue;
            }

            $onlineUsers[$user->id] = $user;
        }

        $news = DB::table('news_posts')
            ->whereIn('category_id', explode(',', config('general.homepage-news')))
            ->limit(3)
            ->get();

        $news = array_map(function (stdClass $row) {
            return Post::fromRow($row);
        }, $news);

        $userCount = DB::table('users')
            ->where('rank_main', '!=', config('rank.banned'))
            ->where('user_activated', 1)
            ->where('user_restricted', 0)
            ->count();

        $lastRegDate = date_diff(
            date_create(date('Y-m-d', $newestUser->registered)),
            date_create(date('Y-m-d'))
        )->format('%a');

        $trashId = config('forum.trash');
        $topicCount = DB::table('topics')
            ->where('forum_id', '!=', $trashId)
            ->count();
        $postCount = DB::table('posts')
            ->where('forum_id', '!=', $trashId)
            ->count();

        return view('home/index', compact('news', 'userCount', 'newestUser', 'lastRegDate', 'topicCount', 'postCount', 'onlineUsers'));
    }
}