JpGraph is a object oriented graph drawing library for PHP 5 to create good looking charts. The library is completely written in PHP and ready to be used in any PHP scripts.
With JpGraph, Developer can create numerous types of graphs and charts such as bar, line, pie, scatter, radar, field, stock and much more.It makes it easy to create both "quick and dirty" graphs with a minimum of code as well as complex graphs which requires a very fine grained control.
In addition to the "normal" charts, JpGraph also support the easy creation of Anti-Spam images. featured included multiple scale types; anti-aliasing of lines; color-gradient fills; support for GIF, JPEG, and PNG formats; and support for multiple Y axes. Many plot types are supported, such as pie-charts, line plots, bar plots, impulse plots, polar plots, error plots, contour plots, matrix plots, Gantt charts, and many more.
JpGraph is released under a dual license. QPL 1.0 (Qt Free Licensee) For non-commercial, open-source or educational use.
Download : http://jpgraph.net/download/