To extract scheme, host, path, ect. simply use 

<?php

  $url  = 'http://name:pass@';
  $url .= 'example.com:10000';
  $url .= '/path/to/file.php?a=1&amp;b=2#anchor';

  $url_data = parse_url ( $url );

  print_r ( $url_data );

?>
___
prints out something like:

Array
(
    [scheme] => http
    [host] => wild.subdomain.orgy.domain.co.uk
    [port] => 10000
    [user] => name
    [pass] => pass
    [path] => /path/to/file.php
    [query] => a=1&b=2
    [fragment] => anchor
)

In my tests parse_url is up to 15x faster than preg_match(_all)!