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[eckline]

should i use www.  in my domain, whats the difference between that and if i dont use it?

also how do i redirect it from domain.com to www.domain.com

thanks

[inp o҉rtb]

That's like... the first search result: http://www.110mb.com/forum/empty-t31345.0.html

[SoCalSubbuteo]

Google regards www.your-site.com & your-site.com as 2 seperate web sites, therefore, if there are links to both URLs your site will suffer Google's duplicate content penalty & drop in their rankings.

If you are registered with Google Webmaster Tools (GWT) go to the 'Tools' tab & use the 'Set preferred domain' to set either the www or the non-www version of your site.

Ideally you would also want to have a 301 redirect (permenantly moved) from one to the other.  You can see how to do that using the .htaccess file as described in the previous post.

[islesv]

Or if you don't have .htaccess, you can do it via PHP.

[eckline]

how do i do it through php

[islesv]

Code:

<?php

// redirect www.domain.com to domain.com
if(preg_match('/www\.'.$_SERVER['HTTP_HOST'].'/i', $_SERVER['HTTP_VIA']))
{
header("HTTP/1.1 301 Moved Permanently");
header("Location: http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
exit();
}