PHP jpgraph库的配置及生成统计图表

作者:袖梨 2022-06-24

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

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:

 

 代码如下 复制代码

functiongb2utf8($gb) {

return$gb;

}

 

即不使用gb2编码方式转utf8方式的那段代码。

折线图

 

 代码如下 复制代码

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);//第一条曲线的数组

 

$graph=newGraph(500,300); 

$graph->SetScale("textlin");

$graph->SetShadow();  

$graph->img->SetMargin(60,30,30,70);//设置图像边距

 

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

 

$lineplot1=newLinePlot($data1);//创建设置两条曲线对象

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

$lineplot1->value->Show();

$graph->Add($lineplot1);//将曲线放置到图像上

 

$graph->title->Set("CDN流量图"); //设置图像标题

$graph->xaxis->title->Set("月份");//设置坐标轴名称

$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);//设置字体

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

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

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

$graph->Stroke();//输出图像

?>

 

柱状图

 

 代码如下 复制代码

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=newGraph(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

 

$barplot=newBarPlot($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();

?>


饼状图

 

 代码如下 复制代码

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=newPieGraph(550,500);

$graph->SetShadow();

 

$graph->title->Set("CDN流量比例");

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

 

$pieplot=newPiePlot3D($data);//创建PiePlot3D对象

$pieplot->SetCenter(0.4, 0.5);//设置饼图中心的位置

$pieplot->SetLegends($gDateLocale->GetShortMonth());//设置图例

$graph->Add($pieplot);

$graph->Stroke();

?>

 

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