PHP/Graphics Image/imagefilledpolygon

Complex Shapes

 
<?
    $points = array(
            20, // x1, top-left
            20, // y1
            230, // x2, top-right
            20, // y2
            230, // x3, bottom-right
            230, // y3
            20, // x4, bottom-left
            230 // y4
    );
    $image = imagecreatetruecolor(250, 250);
    $green = imagecolorallocate($image, 0, 255, 0);
    imagefilledpolygon($image, $points, 4, $green );
    header("Content-type: image/png");
    imagepng($image);
    imagedestroy($image);
?>

Drawing a Polygon with imagefilledpolygon()

 
<?php
header("Content-type: image/png");
$image = imagecreate( 200, 200 );
$red = imagecolorallocate($image, 255,0,0);
$blue = imagecolorallocate($image, 0,0,255 );
$points = array (   10, 10,
      190, 190,
      190, 10,
      10, 190
      );
imagefilledpolygon( $image, $points, count( $points )/2 , $blue );
imagepng($image);
?>