Put a search function on a static php site

Do you have a working php script solution for a search function on a static php site? If so we want you to install it on our static site, configure it and integrate it into our page design. The search should be database driven, have the ability to reindex (the site will grow) and ideally should scan the web pages rather than just using keywords from meta tags. We know there are free search scripts on the web so dont bid over $30 for this work otherwise we will just do it ourselves. Thanks