r2c/system/router.php

<?php
/**
 * @package    Grav.Core
 *
 * @copyright  Copyright (C) 2015 - 2018 Trilby Media, LLC. All rights reserved.
 * @license    MIT License; see LICENSE file for details.
 */

if (PHP_SAPI !== 'cli-server') {
    exit('This script cannot be run from browser. Run it from a CLI.');
}

$_SERVER['PHP_CLI_ROUTER'] = true;

if (is_file($_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . $_SERVER['SCRIPT_NAME'])) {
    return false;
}

$_SERVER = array_merge($_SERVER, $_ENV);
$_SERVER['SCRIPT_FILENAME'] = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . 'index.php';
$_SERVER['SCRIPT_NAME'] = DIRECTORY_SEPARATOR . 'index.php';
$_SERVER['PHP_SELF'] = DIRECTORY_SEPARATOR . 'index.php';

require 'index.php';

error_log(sprintf('%s:%d [%d]: %s', $_SERVER['REMOTE_ADDR'], $_SERVER['REMOTE_PORT'], http_response_code(), $_SERVER['REQUEST_URI']), 4);