pChart – PHP charting library
Looking for some good looking graphs without having to pay for a library or resort to Flash graphs? Try creating your own using pChart. pChart is a PHP class oriented framework designed to create aliased charts. This project focuses on allowing developers to generate great looking graphs by increasing rendering quality introducing an aliasing algorithm.
The graphs from pChart are generated using GD library, so you’ll need that installed on your server if you’re planning to use this library.
The documentation does mention that creating real time graphs will be pretty CPU intensive so you may want to look at caching or pre-generating the graphs. To help you with this, the pChart framework also comes with pCache which helps in caching graphs – so you don’t have to keep rendering graphs on the fly. To get to know more on pChart and how to use it, head over to their documentation page. For a look at the graphs you can generate using this library, take a look at the chart gallery.
Link: pChart Project Home Page

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