If you're interested in running ProcessWire using PHP's built in Webserver this one's for you:
<?php
/*****************************************************************************
* Router script for emulating Apache's "mod_rewrite" functionality.
* This router script is designed for testing ProcessWire instances quickly.
* Don't use this script and/or PHP's built in Webserver in production.
*
* Usage: php -S localhost:8000 -t /ProcessWire /ProcessWire/routing.php
*****************************************************************************/
$uri = urldecode(parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH));
if ($uri !== '/' && file_exists(__DIR__ . $uri)) return false;
$_GET['it'] = $uri; // emulate index.php?it=$1
require_once __DIR__.'/index.php';
Enjoy!