index.php

<?php
  
  @include_once "./utils/httpException.php";
  @include_once "./app/app.controller.php";
  
  header('Access-Control-Allow-Origin: *');
  header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE, OPTIONS');
  header('Access-Control-Allow-Headers: Origin, Content-Type, X-Auth-Token, Authorization');
  
  if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
    return 0;
    exit;
  }
  
  # Disable errors, should be false in production
  # error_reporting(false);
  
  # Check if function loaded successfully, or throw error
  if (!function_exists("httpException")) {
    echo json_encode([
      "message" => "Runtime error",
      "statusCode" => 500
    ]);
    exit;
  }
  
  # Safely load config
  unset($dbConfig);
  @include "./db/db.config.php";
  if (empty($dbConfig)) {
    httpException("Config load error", 500)['end']();
  }
  
  # Setup app
  $app = new AppController($dbConfig);