pChart - build graphs and diagrams in PHP

pChart is a PHP library for creating graphs, histograms and charts. Unlike most similar libraries, pChart is free (distributed under the GPL license). Of the free main rival - Google Chart API .

In addition to the class that renders images, there are classes for preparing data for graphing, as well as a built-in caching mechanism.


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Library operation scheme:



And now a couple of examples of work:

1. Demo plotting charts and histograms

Example:


Source

2. Demo of pie charts

Example:


Source