note 96871 added to function.imagefilledrectangle

That script draws Serpinski's carpet: <pre> <?php set_time_limit(5); $i = 4; // Iterations $xy = 500; // Picture size $img = imagecreatetruecolor($xy, $xy); $white = imagecolorallocate($img, 255, 255, 255); drawCarpet(0, 0, $xy, $xy, $i); function drawCarpet($a, $b, $c, $d, $n) { global $img, $white; if($n <= 0) return; $a1 = 2 * $a / 3 + $c / 3; $c1 = $a / 3 + 2 * $c / 3; $b1 = 2 * $b / 3 + $d / 3; $d1 = $b / 3 + 2 * $d / 3; imagefilledrectangle($img, $a1, $b1, $c1, $d1, $white); drawCarpet($a, $b, $a1, $b1, $n - 1); drawCarpet($a1, $b, $c1, $b1, $n - 1); drawCarpet($c1, $b, $c, $b1, $n - 1); drawCarpet($c1, $b, $c, $b1, $n - 1); drawCarpet($a, $b1, $a1, $d1, $n - 1); drawCarpet($c1, $b1, $c, $d1, $n - 1); drawCarpet($a, $d1, $a1, $d, $n - 1); drawCarpet($a1, $d1, $c1, $d, $n - 1); drawCarpet($c1, $d1, $c, $d, $n - 1); } header('Content-Type: image/png'); imagepng($img); ?> </pre> ---- Server IP: 69.147.83.197 Probable Submitter: 89.163.41.120 ---- Manual Page -- http://www.php.net/manual/en/function.imagefilledrectangle.php Edit -- https://master.php.net/note/edit/96871 Del: integrated -- https://master.php.net/note/delete/96871/integrated Del: useless -- https://master.php.net/note/delete/96871/useless Del: bad code -- https://master.php.net/note/delete/96871/bad+code Del: spam -- https://master.php.net/note/delete/96871/spam Del: non-english -- https://master.php.net/note/delete/96871/non-english Del: in docs -- https://master.php.net/note/delete/96871/in+docs Del: other reasons-- https://master.php.net/note/delete/96871 Reject -- https://master.php.net/note/reject/96871 Search -- https://master.php.net/manage/user-notes.php