PHP jpgraph库的配置及生成统计图表:折线图、柱状图、饼状图等

• 花匠小妙招
• 2025-01-11 22:06

JpGraph简介

      JpGraph是开源的PHP统计图表生成库，基于PHP的GD2图形库构建，把生成统计图的相关操作封装，隐藏了部分复杂的操作，使在PHP页面上输出统计图表变得更加容易。JpGraph的官方网站为：http://jpgraph.net，开发者可以在上面免费下载最新版的JpGraph和阅读相关帮助文档或示例程序。

JpGraph的配置
（1）修改文件php.ini
      在include_path中添加jpgraph的目录路径，并将jpgraph解压后的src目录名称更改为jpgraph。

（2）检查PHP是否支持GD库

      在php.ini文件中找到语句;extension=php_gd2.dll。把上述语句前的;号去掉，即去掉注释。如果因为PHP版本不同而找不到此语句，则可直接添加extension=php_gd2.dll

  （3）修改文件jpgraph_gb2312.php
找到函数：function gb2utf8($gb)
把函数修改为：
   function gb2utf8($gb) {
    return $gb;
    }

即不使用gb2编码方式转utf8方式的那段代码。

折线图

<?php

require_once ("jpgraph/jpgraph.php");

require_once ("jpgraph/jpgraph_line.php");

$data1 = array(523,634,371,278,685,587,490,256,398,545,367,577);

$graph = new Graph(500,300);

$graph->SetScale("textlin");

$graph->SetShadow();

$graph->img->SetMargin(60,30,30,70);

$graph->graph_theme = null;

$lineplot1=new LinePlot($data1);

$lineplot1->value->SetColor("red");

$lineplot1->value->Show();

$graph->Add($lineplot1);

$graph->title->Set("CDN流量图");

$graph->xaxis->title->Set("月份");

$graph->yaxis->title->Set("流 量(Gbits)");

$graph->title->SetMargin(10);

$graph->xaxis->title->SetMargin(10);

$graph->yaxis->title->SetMargin(10);

$graph->title->SetFont(FF_SIMSUN,FS_BOLD);

$graph->yaxis->title->SetFont(FF_SIMSUN,FS_BOLD);

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

$graph->xaxis->SetTickLabels($gDateLocale->GetShortMonth());

$graph->Stroke();

?>

柱状图

<?php

require_once ("jpgraph/jpgraph.php");

require_once ("jpgraph/jpgraph_bar.php");

$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);

$graph->SetScale("textlin");

$graph->SetShadow();

$graph->img->SetMargin(40,30,40,50);

$graph->graph_theme = null;

$barplot = new BarPlot($data);

$barplot->SetFillColor('blue');

$barplot->value->Show();

$graph->Add($barplot);

$graph->title->Set("CDN流量图");

$graph->xaxis->title->Set("月份");

$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);

$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();

?>

饼状图

<?php

require_once ("jpgraph/jpgraph.php");

require_once ("jpgraph/jpgraph_pie.php");

require_once ("jpgraph/jpgraph_pie3d.php");

$data = array(19,23,34,38,45,67,71,78,85,87,90,96);

$graph = new PieGraph(550,500);

$graph->SetShadow();

$graph->title->Set("CDN流量比例");

$graph->title->SetFont(FF_SIMSUN,FS_BOLD);

$pieplot = new PiePlot3D($data);

$pieplot->SetCenter(0.4, 0.5);

$pieplot->SetLegends($gDateLocale->GetShortMonth());

$graph->Add($pieplot);

$graph->Stroke();

?>

前端可以使用Echart替代该方案

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