The following script creates a solid black circle in PHP 3.0.4, but in 3.0.5 the call to imagearc fails.  

It appears I can draw an arc of at most 360 degrees, which is insufficent for creating a closed loop on circles with diameters bigger than about 200 pixels.  Looks like an off-by-one bug.


<?
	$ChartDiameter = 300;
	$ChartWidth = $ChartDiameter + 20;
	$ChartHeight = $ChartDiameter + 20 +
		(($ChartFontHeight + 2) * 
                  count($ChartData));
	$ChartCenterX = $ChartDiameter/2 + 10;
	$ChartCenterY = $ChartDiameter/2 + 10;
	
	//create image
	$image = imagecreate($ChartWidth, $ChartHeight);

	//allocate colors
	$colorBody = imagecolorallocate($image, 0xFF, 
         0xFF, 0xFF);
	$colorBorder = imagecolorallocate($image, 0x00, 
            0x00, 0x00);

	//fill background
	imagefill($image, 0, 0, $colorBody);

	//draw border
	imagearc($image, 
		$ChartCenterX, 
		$ChartCenterY,
		$ChartDiameter+7, 
		$ChartDiameter+7, 
		0, 
		360, 
		$colorBorder);


	imagefilltoborder($image, 
		$ChartCenterX, 
		$ChartCenterY, 
		$colorBorder, 
		$colorBorder);

	
	//output image
	header("Content-type: image/gif");
	imagegif($image);
?>