Imagine, you have some data that you would like to visualize. But normally this is a really ugly job.
JpGraph is a really easy to use php library that helps you dealing with such problems.
diagram example code
$graph = new Graph(540,300);
results in the following diagram:
More information about JpGraph
You can find more information about JpGraph on the homepage of JpGraph. It’s free for non-commercial use; for commercial usage, the author charges little money – compared to other available (commercial) tools.