Whippet::run PHP Method

    function run()
    {
        //
        // Fetch options and set up the environment
        //
        $u = $_SERVER['REQUEST_URI'];
        $this->request_uri = \Sabre\Uri\parse($u);
        $this->requested_path = \Sabre\Uri\normalize($this->request_uri['path']);
        // Is this a Multisite install?
        if ($this->options['multisite']) {
            // We're in a Multisite install. There are a couple of extra steps. Or just one?
            if (preg_match('/^\\/[_0-9a-zA-Z-]+\\/(wp-(content|admin|includes).*)/', $this->requested_path, $matches)) {
                $this->requested_path = "/" . $matches[1];
            }
            // TODO: Is there anything else we need to do?
        }
        if ($this->startswith($this->requested_path, '/wp-content/')) {
            $this->request_path = $this->options['wp-content'] . substr($this->requested_path, 11);
        } else {
            $this->request_path = $this->options['wp-root'] . $this->requested_path;
        }
        // If the path is to a directory, append the default document
        if (is_dir($this->request_path)) {
            $this->request_path .= "index.php";
        }
        // If you don't set this, WordPress adds index.php into all the links.
        $_SERVER['SERVER_SOFTWARE'] = 'Apache';
        // Set up a custom error handler so that we can make errors and notices purty
        set_error_handler(array($this, "handle_php_error"), E_ALL);
        //
        // What sort of request is this?
        //
        // Save the start time
        $this->start_time = microtime(true);
        // Is it a real file, other than the root of the site?
        if ($this->request_path != '/' && file_exists($this->request_path)) {
            // If so, is it PHP that we need to execute?
            if (preg_match('/\\.php$/', $this->request_path) && !isset($this->options['no-scripts'])) {
                $this->request_message();
                return $this->serve_script();
            }
            // If not, assume it's a static asset
            if ($this->options['show-assets']) {
                $this->request_message();
            }
            // This gets set in load_whippet for wordpress requests, but that might not get included
            $this->register_shutdown_function();
            return $this->serve_file();
        }
        // It's not a real file, and Multisite is not enabled, so it must be a wordpress permalink. Execute index.php
        $this->request_message();
        $this->message("Processing {$this->request_path}");
        return $this->serve_wordpress();
    }

<?php

require dirname(__FILE__) . "/colours.class.php";
require dirname(__FILE__) . "/helpers.php";
require dirname(__FILE__) . "/whippet.class.php";
$whippet = new Whippet();
// Run returns some code that needs to be executed at global scope
$code = $whippet->run();
eval($code);
// The code eval'd above might call die() or exit(), so we won't necessarily end up here.
// If you want to run something that executes when WordPress is finished, add a shutdown
// filter for it, or add your code to Whippet::wps_filter_shutdown