.router.php

<?php

$_SERVER["SERVER_ADDR"] = $_SERVER["HTTP_HOST"];

$filename = $_SERVER["PATH_INFO"] ?? $_SERVER["SCRIPT_NAME"];

if (!file_exists($_SERVER["DOCUMENT_ROOT"] . $filename)) {
    require_once __DIR__ . '/error.php';

    return;
}

/* This could be an image or whatever, so don't try to compress it */
ini_set("zlib.output_compression", 0);
return false;