我怎样才能将（？）url分成maindomain + rest？

I am developing a php-mysql based page.

I stored a ton of google search result data (id, title, url) in my db and I want to show the list of it on my php page with each website's favicon next to them

maindomain.png / '<'a href = url'>'title'<'/a'>'

for example

http://stackoverflow.com/questions/ask?title=php+url -> stackoverflow.com -> echo '<''img src="img/stackoverflowcom.png">';

And i can't find right code or methods to separate url...

If there is a right way to do so, please..

$url="http://stackoverflow.com/questions/ask?title=php+url";
echo parse_url($url,PHP_URL_HOST);

You can also fetch all the parts of the url if you need them as well.

print_r(parse_url($url));       // that will also give you host with other parts