PHP中使用Jpgraph生成统计图

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2017-05-12

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Jpgraph是PHP图表类库，可以生成折线图、柱状图、大饼图等等统计图。如果你想使用PHP生成统计图来统计数据，使用它再方便不过啦。

如果说你要亲自使用GD库来写的话，那我只能膜拜大神啦（我不会哈哈哈）。

言归正传，首先你要确定你的PHP已经开启GD库啦，在php.ini配置文件中找到extension=php_gd2.dll确认没有被;注释。那表示已经开启GD库拉。

PHP中使用Jpgraph生成统计图

然后就可以去网上下一个Jpgraph的压缩包啦。解压保存到一个任意文件夹，之后会引用其中的文件，所以最好保存到一个你熟悉的文件夹。

1）生成折线图

<?php  

require_once ("jpgraph/src/jpgraph.php");  
require_once ("jpgraph/src/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 = new Graph(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  
   
$lineplot1=new LinePlot($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(iconv("UTF-8","GB2312//IGNORE","网志博客信息统计表"));   //设置图像标题  
$graph->xaxis->title->Set(iconv("UTF-8","GB2312//IGNORE","月份")); //设置坐标轴名称  
$graph->yaxis->title->Set(iconv("UTF-8","GB2312//IGNORE","流量"));  
$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

效果如图

PHP中使用Jpgraph生成统计图

2）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);  //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();

效果如图

PHP中使用Jpgraph生成统计图

3）大饼图

require_once ("jpgraph/src/jpgraph.php");  
require_once ("jpgraph/src/jpgraph_pie.php");  
require_once ("jpgraph/src/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);  //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();

效果如图

PHP中使用Jpgraph生成统计图