first of all sorry admins i tried different forum and now trying this one remove one thats not suitable. Problem is my website downloads when you click url www.digicoon.com Instead of normal website opening its downloads im really stuck please someone help thanks.
That depends on how the user has his browser set up fpr that type of file - the site has no control over whether the user will see the page or be prompted to download or run it.
make u sure u have the right header() set u shd be header("Content-Type: text/html"); just to be sure remove any additional headers set unless u know what they are for content header defines how a browser handles the document (link says db connection prob btw)
This looks like it has more to do with www.digicoon.com than a link on your site. That url has issues with a database that is down and a few other things.
As KsNitro said, either the database is down (unlikely) or you have SMF set up incorrectly for the database. Check the database URL, name, login and password in the SMF configuration file.