function pacman()
{
$chart = new GooglePieChart('p', 130, 100);
$data = new GoogleChartData(array(80, -20));
$data->setColor('f9f900');
$chart->addData($data);
$chart->setFill('73A2BD');
// I pass null to enable the "legend" trick
$data = new GoogleChartData(null);
$data->setColor('73A2BD');
$data->setLegend('O O O');
$chart->addData($data);
$chart->setLegendPosition('r');
$chart->setRotation(0.628);
return $chart->getUrl();
}