AppTemplate/required.php

<?php

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

require_once __DIR__ . "/settings.php";

require_once __DIR__ . "/vendor/autoload.php";

use Medoo\Medoo;

$database;
try {
    $database = new Medoo([
        'database_type' => DB_TYPE,
        'database_name' => DB_NAME,
        'server' => DB_SERVER,
        'username' => DB_USER,
        'password' => DB_PASS,
        'charset' => DB_CHARSET
    ]);
} catch (Exception $ex) {
    header('HTTP/1.1 500 Internal Server Error');
    die("Database error.  Try again later. (" . $ex->getMessage() . ")");
}