PHP generates 3D pie shape data statistics chart_PHP tutorial

php generates 3D pie shape data statistics chart

/*
* Created on 2009-5-26
*author:deepblue
*/

$image = imagecreatetruecolor(200,200); //Create a 200*200 canvas;

//Create multiple and differentiated colors
$red = imagecolorallocate($image,255,0,0);
$blue = imagecolorallocate($image,0,0,255);
$yellow = imagecolorallocate($image,255,255,0);
$violet = imagecolorallocate($image,255,0,255);
$white = imagecolorallocate($image,255,255,255);
$black = imagecolorallocate($image,0,0,0);

//Use for loop to create 3D effect underlying effect
for($i=120;$i>100;$i--){
Imagefilledarc($image,100,$i,200,120,0,30,$red,IMG_ARC_PIE);//IMG_ARC_PIE annotation is as follows:

imagefilledarc($image,100,$i,200,120,30,80,$blue,IMG_ARC_PIE);
Imagefilledarc($image,100,$i,200,120,80,360,$yellow,IMG_ARC_PIE);
}
//bool imagefilledarc (resource image, int cx, int cy, int w, int h, int s, int e, int color, int style)
//
//imagefilledarc() draws an elliptical arc using cx, cy (the upper left corner of the image is 0, 0) in the image represented by image. Returns TRUE on success, FALSE on failure. w and h specify the width and height of the ellipse respectively, and the s and e parameters specify the start and end points in angles. style can be the bitwise OR (OR) of the following values:
//
//IMG_ARC_PIE
//
//IMG_ARC_CHORD
//
//IMG_ARC_NOFILL
//
//IMG_ARC_EDGED

//This layer is the effect of the top layer, so that the three-dimensional effect comes out!
Imagearc($image,100,100,200,120,0,360,$black);//Add a black border so that the 3D effect looks more obvious
Imagefilledarc($image,100,100,200,120,0,30,$red,IMG_ARC_PIE);
Imagefilledarc($image,100,100,200,120,30,80,$blue,IMG_ARC_PIE);
Imagefilledarc($image,100,100,200,120,80,360,$yellow,IMG_ARC_PIE);

//Add percentage data. Of course, if necessary, you can perform certain operations in batches and input the input to the picture
$str = iconv ("gbk","UTF-8","36%");//This conversion is required if you want to input Chinese. example: Occupied: 30%;
Imagettftext($image,10,360-15,100+70,115,$white,"simhei.ttf",$str);

imagejpeg($image);
imagedestroy($image);

?>

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