根据传入参数自动生成饼图。
-
- /*
- * 生成饼形图片
- */
- class PieChart {
- private $center; //饼形中点
- private $width; //饼形直径
- private $image; //图形对象
- function __construct($width,$backcolor = array(array("r"=>0xFF,"g"=>0xFF,"b"=>0xFF))) {
- $this->width = $width;
- $this->center = $width / 2;
-
- //创建图形对象
- $this->image = imagecreatetruecolor($this->width, $this->width);
-
- //将初始图形填充为白色
- $color = imagecolorallocate($this->image, $backcolor[0]["r"], $backcolor[0]["g"], $backcolor[0]["b"]);
- imagefill($this->image, 0, 0, $color);
- }
-
- //设置图形数据
- public function graphData($data, $colors){
- $black = imagecolorallocate($this->image, 0x00, 0x00, 0x00);
-
- $sum = array_sum($data);
-
- $start = -90;
-
- for($i=0; $i $color = imagecolorallocate($this->image, $colors[$i]["r"], $colors[$i]["g"], $colors[$i]["b"]);
-
- $stop = @($data[$i] / $sum * 360) $start;
-
- imagefilledarc($this->image, $this->center, $this->center,
- $this->width, $this->width, $start, $stop, $color, IMG_ARC_PIE);
- imagefilledarc($this->image, $this->center, $this->center,
- $this->width, $this->width, $start, $stop, $black, IMG_ARC_NOFILL | IMG_ARC_EDGED);
-
- $start = $stop;
- }
- }
-
- //生成图形
- public function flushImage(){
- header("Content-type:image/png");
- imagepng($this->image);
- }
- }
- ?>
-
- include_once 'piechart.cls.php';
- $total = $_GET["total"];
- $count = $_GET["count"];
- $data = array($total-$count,$count);
- $colors = array(
- array('r'=>0xDD,'g'=>0xEE,'b'=>0xFF),
- array('r'=>0xFF,'g'=>0xBB,'b'=>0xAA)
- );
-
- $chart = new PieChart(200,array(array("r"=>0xF9,"g"=>0xF9,"b"=>0xF9)));
- $chart->graphData($data, $colors);
- $chart->flushImage();
- ?>
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