<?

	if (!isset($_GET["fn"]) or !is_file($_GET["fn"]))
		exit();

	$width = 0; // returned image width
	if (isset($_GET["width"])) $width = (int)$_GET["width"];

	$height = 0; // returned image width
	if (isset($_GET["height"])) $height = (int)$_GET["height"];

	$maxwidth = 0; // returned image max width
	if (isset($_GET["maxwidth"])) $maxwidth = (int)$_GET["maxwidth"];

	$maxheight = 0; // returned image min width
	if (isset($_GET["maxheight"])) $maxheight = (int)$_GET["maxheight"];

	$size = getimagesize($_GET["fn"]);

	// Resize if image width is more than maxwidth
	if ($maxwidth and $size[0] > $maxwidth) {

		$width = $maxwidth;
		$height = 0;
	}

	// Resize if image height is more than maxheight
	if ($maxheight and $size[1] > $maxheight) {

		$height = $maxheight;
		$width = 0;
	}


	if ($size[2] != '1' and $size[2] != '2' and $size[2] != '3')
		exit();

	if ($size[2] == '1') $ext = '.gif';
	if ($size[2] == '2') $ext = '.jpg';
	if ($size[2] == '3') $ext = '.png';
	if ($size[2] == '1') $img = imagecreatefromgif ($_GET["fn"]);
	if ($size[2] == '2') $img = imagecreatefromjpeg ($_GET["fn"]);
	if ($size[2] == '3') $img = imagecreatefrompng ($_GET["fn"]);

	$k1 = 0;

	if ($width and $height) {

		$k1 = $size[0]/$width;
		$k2 = $size[1]/$height;
		$k = min($k1, $k2);

		$im_bg = imagecreatetruecolor ($width, $height);
        imagecopyresized($im_bg, $img, 0, 0, round(($size[0] - $width*$k)/2), round(($size[1] - $height*$k)/2), $size[0]/$k, $size[1]/$k, $size[0], $size[1]);

	}
	elseif ($width) {

		$k1 = $size[0]/$width;

		$im_bg = imagecreatetruecolor ($size[0]/$k1, $size[1]/$k1);
		imagecopyresized($im_bg, $img, 0, 0, 0, 0, $size[0]/$k1, $size[1]/$k1, $size[0], $size[1]);
	}
	elseif ($height) {

		$k1 = $size[1]/$height;

		$im_bg = imagecreatetruecolor ($size[0]/$k1, $size[1]/$k1);
		imagecopyresized($im_bg, $img, 0, 0, 0, 0, $size[0]/$k1, $size[1]/$k1, $size[0], $size[1]);
	}
	else {

		$im_bg = $img;
	}

	if ($size[2] == '1') header('Content-Type: image/gif');
	if ($size[2] == '2') header('Content-Type: image/jpeg');
	if ($size[2] == '3') header('Content-Type: image/png');

	if ($size[2] == '1') imagegif($im_bg);
	if ($size[2] == '2') imagejpeg($im_bg, '', 100);
	if ($size[2] == '3') imagepng($im_bg);

	imagedestroy($im_bg);

?>