php is a shoddy programming language preferred by shoddy coders and software written with it, like SMF, tends to be shoddy
for carrying out forum searches, I find the following trick to work very effectively:http://www.google.com/search?q=site%3Aforum.vectorlinux.com+search+terms
where you obviously replace 'search terms' with what you were looking for
notice that this technique can be applied to any other websites you might use without a good search tool
also what were you looking for originally?