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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

Source: https://habr.com/ru/post/30202/



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