本文实例讲述了php使用Jpgraph绘制柱形图的方法。分享给大家供大家参考。具体实现方法如下：
<?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();
?>运行效果如下图所示：
希望本文所述对大家的php程序设计有所帮助。
