Library for drawing trees?

Question

PHP

We need a simple PHP library to render data structures like trees and graphs. Unfortunately, I didn’t manage to google it myself :(
I don’t want to use JS or Flash for these purposes

Answer 1

code.google.com/p/phpsyntaxtree/
www.phpclasses.org/phptreegraph

Answer 2

pear.php.net/manual/en/package.images.image-graphviz.example.php