利用php Jpgraph绘制柱形图

<?php
 public function demo()
    {
        vendor("jpgraph.src.jpgraph");
        vendor("jpgraph.src.jpgraph_bar");

        $data  = array(19,23,34,38,45,67,71,78,85,87,96,145);
        $ydata = array("一","二","三","四","五","六","七","八","九","十","十一","十二");

        $graph = new \Graph(500,300);  //创建新的Graph对象
        $graph->SetScale("textlin");  //刻度样式
        $graph->SetShadow();          //设置阴影
        $graph->img->SetMargin(40,30,40,50); //设置边距

        $graph->graph_theme = null; //设置主题为null，否则value->Show(); 无效

        $barplot = new \BarPlot($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("CDN流量图");
        $graph->xaxis->title->Set("月份"); //设置标题和X-Y轴标题
        $graph->yaxis->title->Set("流 量(Mbits)");
        $graph->title->SetColor("red");
        $graph->title->SetMargin(10);
        $graph->xaxis->title->SetMargin(5);
        $graph->xaxis->SetTickLabels($ydata);

        $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->xaxis->SetFont(FF_SIMSUN,FS_BOLD);

        $graph->Stroke();
    }
?>