PHP parse_url

PHP's parse_url is a handy little function that will parse a URL and return the various components in an associative array. For instance, consider the following code:

$url = "http://www.google.com/search?hl=en&q=php+rules&btnG=Search";
$parts = parse_url($url);
print_r($parts);

This would return:

Array
(
    [scheme] => http
    [host] => www.google.com
    [path] => /search
    [query] => hl=en&q=php+rules&btnG=Search
)