Mautic 4.x router for built-in php webserver

router.php

<?php

## Development router for built-in PHP webserver
require __DIR__ . '/autoload.php';

## using Sparie\Url\Url to avoid the query string (such as cache busting)
## without having to monkey around with parse_url and $_SERVER['REQUEST_URI']
## assumes `composer require --dev spatie/url`
use Spatie\Url\Url;
$url = Url::fromString($_SERVER['REQUEST_URI']);

## Dev mode:
## workaround for Dev mode IP restriction: https://github.com/mautic/mautic/blob/features/app/middlewares/Dev/IpRestrictMiddleware.php#L60
putenv('DDEV_TLD=true');

if (preg_match('#^/phpinfo$#', $url->getPath())) {
    ## Special route for phpinfo
    echo phpinfo();
} elseif (preg_match('#\.(js|css|woff2|woff|ttf|ico)#', $url->getPath())) {
    ## bypassing for assets
    return false;
} elseif (file_exists(__DIR__ . $url->getPath())) {
    ## bypassing for files that exist
    return false;
} else {
    ## Prod mode:
    # include_once $_SERVER['DOCUMENT_ROOT'] . '/index.php';

    ## assumes `composer require --dev symfony/web-profiler-bundle:^4.0`
    ## assumes `composer require --dev webfactory/exceptions-bundle:^4.5`
    include_once $_SERVER['DOCUMENT_ROOT'] . '/index_dev.php';
}