(PHP 4, PHP 5, PHP 7)
imagepolygon — 画一个多边形
$image
, array $points
, int $num_points
, int $color
)
imagepolygon() 在图像中创建一个多边形。points
是一个 PHP 数组,包含了多边形的各个顶点坐标,即 points[0]
= x0,points[1] = y0,points[2]
= x1,points[3] = y1,以此类推。num_points
是顶点的总数。
Example #1 imagepolygon() 例子
<?php
// create a blank image
$image = imagecreatetruecolor(400, 300);
// fill the background color
$bg = imagecolorallocate($image, 0, 0, 0);
// choose a color for the polygon
$col_poly = imagecolorallocate($image, 255, 255, 255);
// draw the polygon
imagepolygon($image,
array (
0, 0,
100, 200,
300, 200
),
3,
$col_poly);
// output the picture
header("Content-type: image/png");
imagepng($image);
?>