Super-light weight database engine to distribute part of tiny PHP script

I am looking for a super-light weight open-source database engine (could be a library that mimics one) to be 开发者_StackOverflow中文版packaged part of a tiny PHP script distributed to people without sudo access. Basic CRUD, no need for any complicated implementations with string search, etc.

I found txtSQL (uses flat files, which I believe is the way to go) but hesitant to use it given the last time it was updated (2005-03).

Suggestions anyone?

sqlite gives you a platform-independent file format and is heavily regression tested and widely used. It is also available in PHP via SQLite3.

sqlite is about as light as you can get and it does everything via text files.