Most of the time when we work on data driven projects, which involves user submitting records related to specific set of data, often there is the need of charts, to show user some diagramtic representation of the data entered.

When it comes to showing charts in the user browser, Fusion Charts is the best of the lot(in my opinion). It provides stunning looks, refreshing animations, interactive flash/javascript charts and much more. Also it provides user the options of many more charts to choose from. Fusion Charts along with Fusion widget provides a complete package of charts.

However to save/export a chart as a jpg/png or any valid picture image type, in fusion charts, you need to load the chart in the browser, which will not hold good if you want only to save charts as image type files, not load the chart in the client browser.

Here comes the utility of pChart, a small yet powerful package. pChart is a PHP class oriented framework designed to create charts. Only you have to include 3 php class file, create couple of objects, call few functions by passing some params, and you are ready to go.
Here you can have the option of showing the charts in the client browser, also to store the chart as an image file.

One plus thing for pChart is, it provides a much more better visual appeal to the charts, as provided by others(so as Google Charts & etc.)

For more detail please visit the following url:  http://www.pchart.net/

Go through the documentation to learn more about pChart.