i need the confirmition whether we can change the html code in to php.it is possible to do it.iam afraid about it.if it is convertable means i need some sample examples recording html.
PHP can handle HTML, so you shouldn't have any trouble. Try to make a copy of one of your pages, then change the extension from .htm or .html to .php. It should display exactly the same. Try this method before changing everything to make sure that will work. If it doesn't work then come back and post on this board. If it doesn't work you may not have PHP installed or your mime types are not correctly specified.
You could also tell your server to render html pages as if they're php pages, which would allow you to start adding php code to existing pages w/out having to rename files and change links.