php search engine multyple keywords/tags

Can anyone suggest me a database structure or some explicit tut开发者_如何学Goorial for creating a search engine with multiple keywords?

The keywords have to match multiple tags not to be part of a string (like an article title)

example: I type in the search field the words: php mysql database and the script should return all entries with this tags.

Thank you!

MyISAM has full text search, which basically allows you to search for strings, and returns the results in order of relevance (more info). I think that could be just what you're looking for!