主要介绍了php使用Jpgraph绘制柱形图的方法,涉及Jpgraph通过定义数组、设置阴影、边距、字体等实现柱形图的相关技巧,需要的朋友可以参考下：

<?php 
include ("src/jpgraph.php"); 
include ("src/jpgraph_bar.php"); 
$data = array(19,23,34,38,45,67,71,78,85,87,90,96); //定义数组
$graph = new Graph(400,300); //创建新的Graph对象 
$graph->SetScale("textlin");                 
$graph->SetShadow(); //设置阴影 
$graph->img->SetMargin(40,30,20,40); //设置边距 
$barplot = new BarPlot($data); //创建BarPlot对象 
$barplot->SetFillColor('blue'); //设置颜色 
$barplot->value->Show(); //设置显示数字 
$graph->Add($barplot); //将柱形图添加到图像中 
$graph->title->Set("年度收支表"); //设置标题和X-Y轴标题
$graph->xaxis->title->Set("月份"); 
$graph->yaxis->title->Set("总金额（兆美元）"); 
$graph->title->SetFont(FF_SIMSUN,FS_BOLD); //设置字体 
$graph->yaxis->title->SetFont(FF_SIMSUN,FS_BOLD); 
$graph->xaxis->title->SetFont(FF_SIMSUN,FS_BOLD); 
$graph->Stroke(); 
?>