var uri = new Uri(url);
var relurl = uri.Scheme + "://" + uri.Authority;
foreach (var v in uri.Segments.Take(uri.Segments.Count() - 1)) { relurl += v; }

module Rack
    class Request
      def subdomains
...

<?php
    function isvalid_url($url) 
    {
...

<?php
/*
E.g:
...

function create_link($string) {

		$input = media_title($string);
...

# This method searches a source by  the http, the www and the trailing / to a url
	def self.find_by_url(url)
		Source.find :first, :conditions => [ " url = ? OR url = ? OR url = ? OR url = ? ", url, url.gsub("http://", "http://www"), url + "/", url.gsub("http://", "http://www")+"/"] 
...

<? php
if $userinput = "http://www."
{
...

<script type="text/javascript">

window.onload = function() {
...

<script type="text/javascript">
var feature_stuff = new Array(
'<li><a href="#">URL 1</a></li>',
...