I am printing my custom URL's in footer which I am getting from database, Some thing like this Assume this contains www.google.com link.
<li><a href="<?php echo $links['link_url']?>"><?php echo $links['title'] ?></a></li>
When I click on this link at footer, it redirecting with my current page URL
www.mydomainname.com/www.google.com
How can I avoid attaching my current domain name to it? It should be redirect to "www.google.com"
The href attribute specifies the URL of the page you're linking to. If you don't provide a protocol to the URL it will assume it's a relative URL and therefore append it to your current path / URL. If you specify a protocol (such as http:// or https://) you'll be taking to the absolute URL. You want to link to use absolute URLs and not relative ones.
Add website url with protocol in your database.
So,it will redirect to google page.