因为在开发内部BI系统中需要画出统计图表，我选了Jpgraph 开源绘图工具实现需求。
之前实现过需求，没想到这次又花了很多时间回忆，各种搜索，真的是好记性不如烂笔头，
不会总结的人没有未来啊。
常用的三种图表样式：
|———— 3D饼图：
include ("jpgraph/jpgraph.php");
include ("jpgraph/jpgraph_pie.php");
include ("jpgraph/jpgraph_pie3d.php");
$data = array(218,100);
$datatitle = array('男','女');
$title = "男女占比";
$width = 490;
$height = 350;
$graph = new PieGraph($width,$height,'auto');
$graph->SetShadow();
$graph->title->Set($title);
$graph->title->SetFont(FF_SIMSUN,FS_BOLD,12);
$p1 = new PiePlot3D($data);//创建3D饼形图对象
$p1->ExplodeSlice(1); //分割线
$p1->SetCenter(0.45);
$graph->legend->SetFont(FF_SIMSUN,FS_BOLD,10); //设置旁注字体
$graph->legend->Pos(0.89,0.9,'center','bottom');//设置旁注位置
$graph->legend->SetFrameWeight(0); //图例文字外框边框border设置为0
$graph->legend->SetFillColor('#FFFFFF'); //图例文字框内的填充颜色
$graph->legend->SetShadow('#C8C8C8', 0);
$graph->legend->SetLayout(LEGEND_VERT);//旁注摆放形式[竖直]
$p1->SetLegends($datatitle);
$graph->Add($p1);
$graph->Stroke();
|—————普通圆形图：
include ("jpgraph/jpgraph.php");
include ("jpgraph/jpgraph_pie.php");
$data = array(218,100);
$datatitle = array('男','女');
$title = "男女占比";
$width = 490;
$height = 350;
$graph = new PieGraph($width,$height,'auto');
$graph->SetShadow();
$graph->title->Set($title);
$graph->title->SetFont(FF_SIMSUN,FS_BOLD,12);
$graph->legend->SetFont(FF_SIMSUN,FS_BOLD,10); //设置旁注字体
$graph->legend->Pos(0.89,0.9,'center','bottom');//设置旁注位置
$graph->legend->SetFrameWeight(0); //图例文字外框边框border设置为0
$graph->legend->SetFillColor('#FFFFFF'); //图例文字框内的填充颜色
$graph->legend->SetShadow('#C8C8C8', 0);
$graph->legend->SetLayout(LEGEND_VERT);//旁注摆放形式[竖直]
// Create pie plot
$p1 = new PiePlot($data);
$p1->SetCenter(0.5,0.55);
$p1->SetSize(0.3);
// Enable and set policy for guide-lines. Make labels line up vertically
$p1->SetGuideLines(true,false);
$p1->SetGuideLinesAdjust(1.1);
$p1->SetLegends($datatitle);
// Setup the labels
$p1->SetLabelType(PIE_VALUE_PER);
$p1->value->Show();
$p1->value->SetFont(FF_ARIAL,FS_NORMAL,9);
$p1->value->SetFormat('%2.1f%%');
$graph->legend->SetLayout(LEGEND_VERT);
$graph->Add($p1);
$graph->Stroke();
|————柱状图：
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_bar.php');
$datay = array('23','12','4','67','9');
$datax = array('0-10','11-50','51-100','101-500','500+');
$title = "综合排名";
$width=520;
$height=380;
// Set the basic parameters of the graph
$graph = new Graph($width,$height,'auto');
$graph->SetScale("textlin");
$top = 50;
$bottom = 80;
$left = 80;
$right = 25;
$graph->Set90AndMargin($left,$right,$top,$bottom);
$graph->xaxis->SetPos('min');
// Nice shadow
$graph->SetShadow();
// Setup title
$graph->title->Set($title);
$graph->title->SetFont(FF_SIMSUN,FS_BOLD,10);
// Setup X-axis
$graph->xaxis->SetTickLabels($datax);
//
$graph->xaxis->SetFont(FF_SIMSUN,FS_BOLD,12);
// Some extra margin looks nicer
$graph->xaxis->SetLabelMargin(5);
// Label align for X-axis
$graph->xaxis->SetLabelAlign('right','center');
// Add some grace to y-axis so the bars doesn't go
// all the way to the end of the plot area
$graph->yaxis->scale->SetGrace(20);
// Setup the Y-axis to be displayed in the bottom of the
// graph. We also finetune the exact layout of the title,
// ticks and labels to make them look nice.
$graph->yaxis->SetPos('max');
// First make the labels look right
$graph->yaxis->SetLabelAlign('center','top');
$graph->yaxis->SetLabelFormat('%d');
$graph->yaxis->SetLabelSide(SIDE_RIGHT);
// The fix the tick marks
$graph->yaxis->SetTickSide(SIDE_LEFT);
// Finally setup the title
$graph->yaxis->SetTitleSide(SIDE_RIGHT);
$graph->yaxis->SetTitleMargin(35);
// Now create a bar pot
$bplot = new BarPlot($datay);
$bplot->SetFillColor("orange");
$bplot->SetShadow();
//You can change the width of the bars if you like
//$bplot->SetWidth(0.5);
// We want to display the value of each bar at the top
$bplot->value->Show();
$bplot->value->SetFont(FF_ARIAL,FS_BOLD,12);
$bplot->value->SetAlign('left','center');
$bplot->value->SetColor("black","darkred");
$bplot->value->SetFormat('%.1f mkr');
// Add the bar to the graph
$graph->Add($bplot);
$graph->Stroke();
以上为常用的图表及对应的后端实现：给自己记忆和需要人的便捷;