pChart是一個開源的圖表生成庫，主要涉及3個Class：pChart.class, pData.class, pCache.class，可生成20多種簡單或復雜的圖表，支持PNG，JPG，GIF通用圖片格式。數據源可以來自于Database，CSV，當然也可以手寫。使用該程序PHP需要開啟GD服務，先來看看pChart的工作流程：

主要分為三步：

下面看一個簡單的柱狀圖表：

代碼如下：

<?php // Standard inclusions include('pChart/pData.class'); include('pChart/pChart.class'); // Dataset definition $DataSet = new pData; //圖表數據 $DataSet->AddPoint(array(1,4,-3,2,-3,3,2,1,0,7,4),'Serie1'); $DataSet->AddPoint(array(3,3,-4,1,-2,2,1,0,-1,6,3),'Serie2'); $DataSet->AddPoint(array(4,1,2,-1,-4,-2,3,2,1,2,2),'Serie3'); $DataSet->AddAllSeries(); $DataSet->SetAbsciseLabelSerie(); //數據圖例 $DataSet->SetSerieName('Microsoft','Serie1'); $DataSet->SetSerieName('IBM','Serie2'); $DataSet->SetSerieName('Google','Serie3'); // Initialise the graph $Test = new pChart(700,230); //設置圖表尺寸、樣式 $Test->setFontProperties('Fonts/tahoma.ttf',8); $Test->setGraphArea(50,30,680,200); $Test->drawFilledRoundedRectangle(7,7,693,223,5,240,240,240); $Test->drawRoundedRectangle(5,5,695,225,5,230,230,230); $Test->drawGraphArea(255,255,255,TRUE); $Test->drawScale($DataSet->GetData(),$DataSet->GetDataDescription(),SCALE_NORMAL,150,150,150,TRUE,0,2,TRUE); $Test->drawGrid(4,TRUE,230,230,230,50); // Draw the 0 line $Test->setFontProperties('Fonts/MankSans.ttf',6); $Test->drawTreshold(0,143,55,72,TRUE,TRUE); // Draw the bar graph //柱狀圖要使用drawBarGraph() $Test->drawBarGraph($DataSet->GetData(),$DataSet->GetDataDescription(),TRUE,80); // Finish the graph //制作圖例、標題、字體等屬性 $Test->setFontProperties('Fonts/MankSans.ttf',10); $Test->drawLegend(596,150,$DataSet->GetDataDescription(),255,255,255); $Test->setFontProperties('Fonts/MankSans.ttf',10); $Test->drawTitle(50,22,'Example',50,50,50,585); //生成圖表 $imageFile = 'example12.png'; $Test->Render($imageFile); echo ’<img src='http://www.cgvv.com.cn/bcjs/’.$imageFile.’'>’;?>

這個是雷達效果的：

代碼：

<?php // Standard inclusions include('pChart/pData.class'); include('pChart/pChart.class'); // Dataset definition $DataSet = new pData; $DataSet->AddPoint(array('Memory','Disk','Network','Slots','CPU'),'Label'); $DataSet->AddPoint(array(6,4,7,4,5),'Serie1'); $DataSet->AddPoint(array(2,3,5,2,4),'Serie2'); $DataSet->AddSerie('Serie1'); $DataSet->AddSerie('Serie2'); $DataSet->SetAbsciseLabelSerie('Label'); $DataSet->SetSerieName('Reference','Serie1'); $DataSet->SetSerieName('Tested computer','Serie2'); // Initialise the graph $Test = new pChart(400,400); $Test->setFontProperties('Fonts/tahoma.ttf',8); $Test->drawFilledRoundedRectangle(7,7,393,393,5,240,240,240); $Test->drawRoundedRectangle(5,5,395,395,5,230,230,230); $Test->setGraphArea(30,30,370,370); $Test->drawFilledRoundedRectangle(30,30,370,370,5,255,255,255); $Test->drawRoundedRectangle(30,30,370,370,5,220,220,220); // Draw the radar graph //要使用drawRadarAxis()生成雷達效果 $Test->drawRadarAxis($DataSet->GetData(),$DataSet->GetDataDescription(),TRUE,20,120,120,120,230,230,230); $Test->drawFilledRadar($DataSet->GetData(),$DataSet->GetDataDescription(),50,20); // Finish the graph $Test->drawLegend(15,15,$DataSet->GetDataDescription(),255,255,255); $Test->setFontProperties('Fonts/tahoma.ttf',10); $Test->drawTitle(0,22,'Example',50,50,50,400); $imageFile = 'example8.png'; $Test->Render($imageFile); echo ’<img src='http://www.cgvv.com.cn/bcjs/’.$imageFile.’'>’;?>

再看幾個其他的效果

1，餅圖：

2, 雙座標曲線圖：

3, 層疊柱狀圖：

4, 多圖表：

圖表的種類已經相當豐富了，具體圖表設置請參考

http://pchart.sourceforge.net/documentation.php?topic=pChart

::源代碼下載::：

http://xiazai.jb51.net/202007/yuanma/pChart_jb51.rar

到此這篇關于PHP生成圖表pChart的示例解析的文章就介紹到這了,更多相關PHP生成圖表pChart內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！