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解决JpGraph中文乱码问题的方法

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Release: 2016-05-26 08:20:35
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JpGraph是一个非常不错的图形类库了,我们可以直接使用它生成各种柱状图,饼图,折线图并且还可以增加文字说明了,在增加英文数字时没有问题,但增加中文汉字说明时会发现乱码问题,对此小编整理了一些解决JpGraph中文乱码问题的方法供各位参考。

JpGraph为什么会出现中文乱码

在JpGraph中默认是要把字符串转成utf8的,但是如果你的文件本身就是utf8的,并且要用中文字体,它还会转一遍,结果多转了一次,就会出现乱码。如图所示

JpGraph使用详解之中文乱码解决方法

解决JpGraph中文乱码问题的方法,取前篇的代码片断如下:

//设置图表的标题字体、大小 
$graph->title->Set("Accumulated bar plots"); 
$graph->xaxis->title->Set("X-title"); 
$graph->yaxis->title->Set("Y-title"); 
//和上面标题对应,设置标题的字体和大小 
$graph->title->SetFont(FF_FONT1,FS_BOLD); 
$graph->yaxis->title->SetFont(FF_FONT1,FS_BOLD); 
$graph->xaxis->title->SetFont(FF_FONT1,FS_BOLD); 
//把它改为 
//设置图表的标题字体、大小 
$graph->title->Set(iconv("UTF-8","GB2312//IGNORE","网志博客信息统计表"));  
$graph->xaxis->title->Set(iconv("UTF-8","GB2312//IGNORE","X-标题")); 
$graph->yaxis->title->Set(iconv("UTF-8","GB2312//IGNORE","Y-标题")); 
//和上面标题对应,设置标题的字体和大小 
$graph->title->SetFont(FF_SIMSUN,FS_BOLD); 
$graph->yaxis->title->SetFont(FF_SIMSUN,FS_BOLD); 
$graph->xaxis->title->SetFont(FF_SIMSUN,FS_BOLD);
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使用php函数据中文由UTF-8转为GB2312,记住由于iconv本身的一个bug,iconv在转换字符"-"到gb2312时会出错,所以在需要转成的编码后加上 "//IGNORE".

FF_SIMSUN表示中文简体,对应的字体文件是simsun.ttc,虽然FF_CHINESE和FF_BIG5也表示中文但是它们对应的字体文件是不同的,所以不要弄错.

解决JpGraph中文乱码问题的方法,下面是本例调试的完整代码:

require_once ('jpgraph/jpgraph.php'); 
require_once ('jpgraph/jpgraph_bar.php'); 
$data1y=array(0,8,9,3,5,6); 
$data2y=array(18,2,1,7,5,4); 
// Create the graph. These two calls are always required 
$graph = new Graph(500,400); 
$graph->SetScale("textlin"); 
$graph->SetShadow(); 
$graph->img->SetMargin(40,30,20,40);//设置图形的边距 
// Create the bar plots 
$b1plot = new BarPlot($data1y); 
$b1plot->SetFillColor("orange"); 
$b1plot->value->Show(); 
$b2plot = new BarPlot($data2y); 
$b2plot->SetFillColor("blue"); 
$b2plot->value->Show(); 
// Create the grouped bar plot 
$gbplot = new AccBarPlot(array($b1plot,$b2plot)); 
// ...and add it to the graPH 
$graph->Add($gbplot); 
//设置标题字体样式 
$graph->title->Set(iconv("UTF-8","GB2312//IGNORE","网志博客信息统计表")); 
$graph->xaxis->title->Set(iconv("UTF-8","GB2312//IGNORE","X-标题")); 
$graph->yaxis->title->Set(iconv("UTF-8","GB2312//IGNORE","Y-标题")); 
$graph->title->SetFont(FF_SIMSUN,FS_BOLD); 
$graph->yaxis->title->SetFont(FF_SIMSUN,FS_BOLD); 
$graph->xaxis->title->SetFont(FF_SIMSUN,FS_BOLD); 
$graph->Stroke();
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当然了,我这里只介绍了一种方法,还有一种就是修改源码,但不推荐,因为我觉得改动源码可能会给其它地方带来意想不到的麻烦.

使用JpGraph,要知道其版本、运行服务器以及操作系统的息息,不能张冠李戴,否则麻烦多多,好了,至此JpGraph使用介绍也就这么多了.


永久地址:

转载随意~请带上教程地址吧^^

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