web/app/inc.php

<?php
/*
    This is the main file to be included on every page.
    It will act as a front controller of our application.
      _____
     /     \
    | () () |
     \  ^  /
      |||||
      |||||

    Tread carefully
*/

// Autoloader
spl_autoload_register(function ($class_name) {
    require __DIR__ . '/core/' . $class_name . '.php';
});

// Define global CONFIG constant.
define("CONFIG",
    require __DIR__ . '/config.php'
);