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Home Backend Development PHP Tutorial PHP 生成环形图程序

PHP 生成环形图程序

Jun 23, 2016 pm 01:42 PM

各位大神 有没有php 环形图生成程序,  就像这样子的 


回复讨论(解决方案)

你是要产生图片还是要在网页上显示
如果只是为了在网页上显示,可以使用 jqPlot、Highcharts 这类 js 图表插件来做
如果是要生成图片,可以考虑用 jpGraph。不知是否有支持你需要的样式
自己写的话也不难,就是一段段环缺计算量比较大

php运行在服务端只是提供数据,图标显示需要用到js,如上斑竹所说的库.

你说的是PHP程序画圆吧!我也做过跟你的差不多!给你个参考.....程序仅供参考!
//填充图表的参数
$ChartDiameter = 140; //图表直径
$ChartData = array(20,80);//用于生成图表的数据,可通过数据库来取得来确定也可以多个不过和颜色数组对应
$msg = '56%';

//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);
}
//确定图形的大小
$ChartWidth = $ChartDiameter + 22;
$ChartHeight = $ChartDiameter + 56;
//确定统计的总数
$ChartTotal = '';
for($index = 0;$index  $ChartTotal += $ChartData[$index];
}
$ChartCenterX = $ChartDiameter/2 + 11;
$ChartCenterY = $ChartDiameter/2 + 28;
//生成空白图形
$image = imagecreatetruecolor($ChartWidth, $ChartHeight);
//分配颜色
$colorBody=imagecolorallocate($image,255,255,255);//白色
$colorBorder=imagecolorallocate($image,0,0,0);
$colorText=imagecolorallocate($image, 0, 0, 0);
$colorSlice[] = imagecolorallocate($image, 255,255,255);//这里是和你上面写的数组对应的颜色
$colorSlice[] = imagecolorallocate($image, 241,120,129);//数据完成显示的背景色
//$colorSlice[] = imagecolorallocate($image,0,0,0);//数据完成显示的背景色

//填充背境
imagefill($image, 0, 0, $colorBody);
//画每一个扇形
$Degrees = 0;
for($index = 0; $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
$tempnum = $EndDegrees - $startDegrees;
$MidPoint = round(($tempnum/2)+$startDegrees); 
list($ArcX, $ArcY) = circle_point($MidPoint, $ChartDiameter/2);
imagefilltoborder($image,floor($ChartCenterX + $ArcX),floor($ChartCenterY + $ArcY),
$CurrentColor,$CurrentColor);
}
$red = imagecolorallocate($image,255,0,0);//分配红色
$white = imagecolorallocate($image,255,255,255);//分配白色
imagefilledellipse($image,81,98,120,120,$red);
$font = 'simhei.ttf';
imagettftext($image, 20,0, 63, 108, $white, $font,$msg);

//到此产生了一幅图像,把它发到浏览器上,重要是要将标头发给浏览器,让它知道是一个GIF文件。
header("Content-type: image/png");
imagegif($image);
imagedestroy($image);
?>

补充一下有个simhei.ttf是字体文件需要下载,可以问我要!

还有就是你说的这个图,控制画图的半径,控制每个扇形的起始点,这就需要你去想想算法了!

问题已解决, 谢谢各位. 

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