php使用Jpgraph绘制3D饼状图的方法

<?php 
include ("src/jpgraph.php"); 
include ("src/jpgraph_pie.php"); 
include ("src/jpgraph_pie3d.php"); 
$data = array(19,23,34,38,45,67,71,78,85,87,90,96); 
$graph = new piegraph(400,300); 
$graph->setshadow(); 
$graph->title->set("年度收支表"); 
$graph->title->setfont(ff_simsun,fs_bold); 
$pieplot = new pieplot3d($data); //创建pieplot3d对象 
$pieplot->setcenter(0.4); //设置饼图中心的位置 
$pieplot->setlegends($gdatelocale->getshortmonth()); //设置图例 
$graph->add($pieplot); 
$graph->stroke(); 
?>