(PHP 4, PHP 5, PHP 7, PHP 8)
imagepolygon — 畫一個(gè)多邊形
$image
,$points
,$color
imagepolygon() 在圖像中創(chuàng)建一個(gè)多邊形。points
是一個(gè) PHP 數(shù)組,包含了多邊形的各個(gè)頂點(diǎn)坐標(biāo),即 points[0]
= x0,points[1] = y0,points[2]
= x1,points[3] = y1,以此類推。num_points
是頂點(diǎn)的總數(shù)。
示例 #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);
?>