I know this is a simple question. But I can't really seem to understand why this function is returning null. I am trying to just the url host, and it returns null. In the example below i passed google.com.. I am trying to return an array where it just says "google"

Also when I pass in <http://www.google.com> it just "www.google.com"

Below is my code

```
    $test = parse_url("google.com",PHP_URL_HOST);

    var_dump($test);

```

Any help would be really appreciated.