(PHP 4, PHP 5, PHP 7)
imagepolygon — ��һ�������
$image
, array $points
, int $num_points
, int $color
) : bool
imagepolygon() ��ͼ���д���һ������Ρ�points
��һ�� PHP ���飬�����˶���εĸ����������꣬�� points[0]
= x0��points[1] = y0��points[2]
= x1��points[3] = y1���Դ����ơ�num_points
�Ƕ����������
Example #1 imagepolygon() ����
<?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);
?>
�μ� imagecreate() �� imagecreatetruecolor()��