Bar and Line Graphs

[Arc]

Is it possible to make a graph like this with PHP that has bars and lines?

A simple bar graph is easy, just images that you adjust the hieght on based upon numbers.

But the hard part is those Horizontal lines that you see in this image.

http://www.getpowered.net/lee/graph.gif

What is the best way to go about drawing graphs?

Thanks!😃

[LordShryku]

I've seen a lot of bar graph generation classes on phpclasses. Might want to look through some of them....