To add a pie series to the chart, you do:
$_series = new PieSeries("Browsers");
$_series->LabelsAppearance->DataFormatString="{0}%";
$_item = new PieItem(31.8,"Firefox");
$_item->BackgroundColor = "#ff9900";
$_item->Exploded = true;
$_series->AddItem($_item);
$_item = new PieItem(16.1,"Internet Explorer");
$_item->BackgroundColor = "#cccccc";
$_series->AddItem($_item);
$chart->PlotArea->AddSeries($_series);
<?php
/*
* This file is ready to run as standalone example. However, please do:
* 1. Add tags <html><head><body> to make a complete page
* 2. Change relative path in $KoolControlFolder variable to correctly point to KoolControls folder
*/
$KoolControlsFolder = "../../../../KoolControls";//Relative path to "KoolPHPSuite/KoolControls" folder
require $KoolControlsFolder."/KoolChart/koolchart.php";
$chart = new KoolChart("chart");
$chart->scriptFolder=$KoolControlsFolder."/KoolChart";
$chart->Width = 700;
$chart->Height = 470;
$chart->Title->Text = "Browser Statistics 2012";
$_series = new PieSeries("Browsers");
$_series->LabelsAppearance->DataFormatString="{0}%";
$_item = new PieItem(31.8,"Firefox");
$_item->BackgroundColor = "#ff9900";
$_item->Exploded = true;
$_series->AddItem($_item);
$_item = new PieItem(16.1,"Internet Explorer");
$_item->BackgroundColor = "#cccccc";
$_series->AddItem($_item);
$_item = new PieItem(44.9,"Chrome");
$_item->BackgroundColor = "#999999";
$_series->AddItem($_item);
$_item = new PieItem(4.3,"Safari");
$_item->BackgroundColor = "#666666";
$_series->AddItem($_item);
$_item = new PieItem(2.9,"Opera & Others");
$_item->BackgroundColor = "#333333";
$_series->AddItem($_item);
$chart->PlotArea->AddSeries($_series);
?>
<form id="form1" method="post">
<?php echo $chart->Render();?>
<div><i>* <u>Note</u>:</i>Generate your own chart with <a style="color:#B8305E;" target="_blank" href="http://codegen.koolphp.net/generate_koolchart.php">Code Generator</a></div>
</form>
KoolChart - Excellent PHP Chart and GraphFullVersion 2.6.0.2 released on 25/11/2016