<?php
	if (! $size > 0) {
		$size = 300;
	}
	$radius = floor($size / 2);

	header("content-Type: image/gif");

	$img = ImageCreate($size, $size);
	$color_alpha = ImageColorAllocate($img, 254, 254, 254);
	$color_white = ImageColorAllocate($img, 255, 255, 255);
	$color_black = ImageColorAllocate($img, 0, 0, 0);
	$color_gray  = ImageColorAllocate($img, 192, 192, 192);
	$color_red   = ImageColorAllocate($img, 255, 0, 0);
	$color_blue  = ImageColorAllocate($img, 0, 0, 255);
	ImageColorTransparent($img, $color_alpha);

	ImageArc($img,$radius, $radius, $size, $size, 0, 360, $color_black);
	ImageFill($img, $radius, $radius, $color_white);

	$min = 0;
	while($min++ < 60) {
		if ($min % 15 == 0)
			$len = $radius / 5;
		elseif ($min % 5 == 0)
			$len = $radius / 10;
		else
			$len = $radius / 25;

		$ang = (2 * M_PI * $min) / 60;
		$x1 = sin($ang) * ($radius - $len) + $radius;
		$y1 = cos($ang) * ($radius - $len) + $radius;
		$x2 = (1 + sin($ang)) * $radius;
		$y2 = (1 + cos($ang)) * $radius;

		ImageLine($img, $x1, $y1, $x2, $y2, $color_black);
	}

	list($hour, $min, $sec) = preg_split ("/-/", Date("h-i-s", Time()));
	$hour = $hour % 12;

	$xs = intval(cos($sec * M_PI/30 - M_PI/2) * 0.75 * $radius + $radius);
	$ys = intval(sin($sec * M_PI/30 - M_PI/2) * 0.75 * $radius + $radius);
	$xm = intval(cos($min * M_PI/30 - M_PI/2) * 0.65 * $radius + $radius);
	$ym = intval(sin($min * M_PI/30 - M_PI/2) * 0.65 * $radius + $radius);
	$xh = intval(cos($hour*5 * M_PI/30 - M_PI/2) * 0.5 * $radius + $radius);
	$yh = intval(sin($hour*5 * M_PI/30 - M_PI/2) * 0.5 * $radius + $radius);

	ImageLine($img, $radius, $radius,   $xs, $ys, $color_gray);
	ImageLine($img, $radius, $radius-1, $xm, $ym, $color_blue);
	ImageLine($img, $radius-1, $radius, $xm, $ym, $color_blue);
	ImageLine($img, $radius, $radius-1, $xh, $yh, $color_blue);
	ImageLine($img, $radius-1, $radius, $xh, $yh, $color_blue);

	ImageArc($img, $radius, $radius, $radius / 8, $radius / 8, 0, 360, $color_red);
	ImageFillToBorder($img, $radius, $radius, $color_red, $color_red);

	ImageGif($img);
	ImageDestroy($img);

?>