php 画饼图,给你一个画饼图的，画直方图直接用img控

直方图直接用img控"/>

php 画饼图,给你一个画饼图的，画直方图直接用img控

//调用方法：

//chart.php为本文文件名

/*

.html给你一个画饼图的，画直方图直接用img控_php

把角度转换为弧度

*/

function radians ($degrees)

{

return($degrees * (pi()/180.0));

}

/*

** 取得在圆心为(0，0)圆上 x,y点的值

*/

function circle_point($degrees, $diameter)

{

$x = cos(radians($degrees)) * ($diameter/2);

$y = sin(radians($degrees)) * ($diameter/2);

return (array($x, $y));

}

// 填充图表的参数

$ChartDiameter = 200; //图表直径

$ChartFont = 2; //图表字体

$ChartFontHeight = imagefontheight($ChartFont);//图表字体的大小

require('mysql.php3');

$sql=new mysql_class;

$sql->create('star');

$sql->query("select * from serch where answer='富士通常昊 九段'");

$record1=$sql->rows;

$sql->query("select * from serch where answer='富士通曹薰铉 九段'");

$record2=$sql->rows;

$ChartData = array( $record1,$record2);//用于生成图表的数据，可通过数据库来取得来确定

//$ChartLabel = array("常昊九段", "曹薰铉九段"); //数据对应的名称

//确定图形的大小

$ChartWidth = $ChartDiameter + 20;

$ChartHeight = $ChartDiameter + 20 +

(($ChartFontHeight + 2) * count($ChartData));

//确定统计的总数

for($index = 0; $index < count($ChartData); $index++)

{

$ChartTotal += $ChartData[$index];

}

$ChartCenterX = $ChartDiameter/2 + 10;

$ChartCenterY = $ChartDiameter/2 + 10;

//生成空白图形

$image = imagecreate($ChartWidth, $ChartHeight);

//分配颜色

$colorBody = imagecolorallocate($image, 0xe4, 0xe6, 0xd1);

$colorBorder = imagecolorallocate($image, 0x00, 0x00, 0x00);

$colorText = imagecolorallocate($image, 0x00, 0x00, 0x00);

$colorSlice[] = imagecolorallocate($image, 0xFF, 0x00, 0x00);

$colorSlice[] = imagecolorallocate($image, 0x00, 0x00, 0xFF);

//填充背境

imagefill($image, 0, 0, $colorBody);

/*

** 画每一个扇形

*/

$Degrees = 0;

for($index = 0; $index < count($ChartData); $index++)

{

$StartDegrees = round($Degrees);

$Degrees += (($ChartData[$index]/$ChartTotal)*360);

$EndDegrees = round($Degrees);

$CurrentColor = $colorSlice[$index%(count($colorSlice))];

//画图F

imagearc($image,$ChartCenterX,$ChartCenterY,$ChartDiameter,

$ChartDiameter,$StartDegrees,$EndDegrees, $CurrentColor);

//画直线

list($ArcX, $ArcY) = circle_point($StartDegrees, $ChartDiameter);

imageline($image,$ChartCenterX,$ChartCenterY,floor($ChartCenterX + $ArcX),

floor($ChartCenterY + $ArcY),$CurrentColor);

//画直线

list($ArcX, $ArcY) = circle_point($EndDegrees, $ChartDiameter);

imageline($image,$ChartCenterX,$ChartCenterY,ceil($ChartCenterX + $ArcX),

ceil($ChartCenterY + $ArcY),$CurrentColor);

//填充扇形

$MidPoint = round((($EndDegrees - $StartDegrees)/2) + $StartDegrees);

list($ArcX, $ArcY) = circle_point($MidPoint, $ChartDiameter/2);

imagefilltoborder($image,floor($ChartCenterX + $ArcX),floor($ChartCenterY + $ArcY),

$CurrentColor,$CurrentColor);

}

//画边框

imagearc($image,

$ChartCenterX,

$ChartCenterY,

$ChartDiameter,

$ChartDiameter,

0,

180,

$colorBorder);

imagearc($image,

$ChartCenterX,

$ChartCenterY,

$ChartDiameter,

$ChartDiameter,

180,

360,

$colorBorder);

imagearc($image,

$ChartCenterX,

$ChartCenterY,

$ChartDiameter+7,

$ChartDiameter+7,

0,

180,

$colorBorder);

imagearc($image,

$ChartCenterX,

$ChartCenterY,

$ChartDiameter+7,

$ChartDiameter+7,

180,

360,

$colorBorder);

imagefilltoborder($image,

floor($ChartCenterX + ($ChartDiameter/2) + 2),

$ChartCenterY,

$colorBorder,

$colorBorder);

//画图例

for($index = 0; $index < count($ChartData); $index++)

{

$CurrentColor = $colorSlice[$index%(count($colorSlice))];

$LineY = $ChartDiameter + 20 + ($index*($ChartFontHeight+2));

//draw color box

imagerectangle($image,

10,

$LineY,

10 + $ChartFontHeight,

$LineY+$ChartFontHeight,

$colorBorder);

imagefilltoborder($image,

12,

$LineY + 2,

$colorBorder,

$CurrentColor);

//画标签

imagestring($image,

$ChartFont,

20 + $ChartFontHeight,

$LineY,

"$ChartData[$index]",

$colorText);

}

//到此脚本 已经生了一幅图像的，现在需要的是把它发到浏览器上，重要的一点是要将标头发给浏览器，让它知道是一个GIF文件。不然的话你只能看到一堆奇怪的乱码

header("Content-type: image/gif");

//输出生成的图片

imagegif($image);

?>

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