link for website

[eluser]PHP Programmer[/eluser]
I am trying to add a link by using anchor() function.
I have a string say "Click Here" and I want to establish a link on it say www.google.com
I am doing it like:
anchor("$search->url", "Click Here")

But I am conveyed to http://localhost/mySite/www.google.com because $search->url is assigned to www.google.com in my DB

How can make a link to www.google.com directly.

Please suggest