Hi pavmoxo,
I'm currently using MySearchParser for all of my PHP / MySQL based search engines. It's a search engine for database, so what I do is add the keywords of my pages into MySQL and search it from there, with a reference URL to point to.
http://www.addedworth.com/php/urtfer...MySearchParser
Was trying many other types of search engines before, but the features provided by MySearchParser was something that I've been looking for a very long time, particularly the ability to perform AND, OR, NOT and phrase searches , the same way Altavista and Google does it.
Let me know if you find anything better.
Regards,
Spin