《PHP实例:PHP jpgraph库的配置及生成统计图表:折线图、柱状图、饼状图》要点:
本文介绍了PHP实例:PHP jpgraph库的配置及生成统计图表:折线图、柱状图、饼状图,希望对您有用。如果有疑问,可以联系我们。
JpGraph简介PHP实战
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.PHP实战
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JpGraph的配置PHP实战
(1)修改文件php.iniPHP实战
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.PHP实战
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(2)检查PHP是否支持GD库PHP实战
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.dllPHP实战
(3)修改文件jpgraph_gb2312.phpPHP实战
找到函数:function gb2utf8($gb)PHP实战
把函数修改为:PHP实战
- function gb2utf8($gb) {
- return $gb;
- }
即不使用gb2编码方式转utf8方式的那段代码.PHP实战
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折线图PHP实战
- <?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); //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("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
- ?>
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柱状图PHP实战
- <?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();
- ?>
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饼状图PHP实战
- <?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); //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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