Issue width JPG upload with conversion to PNG in php

I'm getting some odd behavior with an image upload function I have.  I can't seem to see where it is coming from and was hoping someone could take a look.

I have a function which I call to resize and convert images to png.  I have a parameter option to take the passed width and height and center/resize the passed image to that width and height width transparency to either the left and right or top and bottom.

So if I have an image (.jpg or .png) which is 400px X 200px and I pass the width and height of 200px X 200px.  I would end up with a 200px X 200px .png with the top 50px transparent and the bottom 50px transparent.

I am getting almost that exact behavior with exception to 2 end results.

1. If the image is wider then the destination width and height (ratio wise) then I get a 1px X 1px black dot in the 0px X 0px location with a black line just above my original image (save for the first pixel on the right which is transparent)

So input (820px X 520px all blue image with the function call

upload($location, 801, 543, 2)

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)
output  (http://dansdomain.com/Test/result-wider.png)

2. If the image is taller then the destination width and height (ratio wise) then I get a .png image which is 100% as expected with exception to a black pixel at the location 1px X 1px.  

So input (790px X 600px all blue image with the function call

upload($location, 801, 543, 2)

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)

output (http://dansdomain.com/Test/result-taller.png)

Here is my function:

if(!function_exists("upload")){
	//$image = $image file name
	//$width = intended width of resized image, if 0 it will proportion to height, overrides proportion
	//$height = intended width of resized image, if 0 it will proportion to width, overrides proportion
	//$proportion = 2,1,0;
	//------ 2 = Preserve proportions while adding a border to fill width and height  
	//------ 1 = retain proportion to fit within both given width and height
	//------ 0 = disregard proportions and resize to the exact width and height
	
	
	function upload($image, $width, $height, $proportion){
		// IS GD HERE?
		
		$gdv = get_gd_info();
		
		if (!$gdv){ 
			return FALSE;
		}
		
		// GET AN IMAGE THING
		
		$ext = trim(strtolower(end(explode('.', $image))));
		
		list($imageX, $imageY, $type) = getimagesize($image);	//gets information about new server image
				
		// GET THE LESSER OF THE RATIO OF THUMBNAIL H OR W DIMENSIONS
		$ratio_w = ($width / $imageX);
		$ratio_h = ($height / $imageY);
		$ratio   = ($ratio_w < $ratio_h) ? $ratio_w : $ratio_h;		
		
		if($width == 0){
			
			if($imageY > $height){
				$newHeight = $height;
				$newWidth = ($height/$imageY) * $imageX;	
			}else{
				$newHeight = $imageY;
				$newWidth = $imageX;	
			}
			
			$width = $newWidth;
			$height = $newHeight;
			
			// COMPUTE THUMBNAIL IMAGE CENTERING OFFSETS
			$fromMidX = 0;
			$fromMidY = 0;
			
		}elseif($height == 0){
			
			if ($imageX > $width){
				$newWidth = $width;
				$newHeight = ($width/$imageX) * $imageY;
			}else{
				$newHeight = $imageY;
				$newWidth = $imageX;	
			}
			
			$width = $newWidth;
			$height = $newHeight;
			
			// COMPUTE THUMBNAIL IMAGE CENTERING OFFSETS
			$fromMidX = 0;
			$fromMidY = 0;
			
		}elseif($proportion == 2){
			
			// COMPUTE THUMBNAIL IMAGE DIMENSIONS
			$newWidth = $imageX * $ratio;
			$newHeight = $imageY * $ratio;
			
			
			
			
			// COMPUTE THUMBNAIL IMAGE CENTERING OFFSETS
			$fromMidX = ($width - $newWidth) / 2.0;
			$fromMidY = ($height - $newHeight) / 2.0;
			
			
		}elseif($proportion == 1){
			
			if ($imageX > $width){
				$newHeight = ($width/$imageX) * $imageY;
				$newWidth = $width;
			}
			if ($imageY > $height){
				$newHeight = $height;
				$newWidth = ($height/$imageY) * $imageX;
			}
			
			$fromMidY = 0;
			$fromMidX = 0;
			
		}elseif($proportion == 0){
			
			$newWidth = $width;
			$newHeight = $height;
			
			$fromMidY = 0;
			$fromMidX = 0;			
		}
		
		switch($type)
		{
			case '2' :
				$source = imagecreatefromjpeg($image);
				break;
			case '3' :
				$source = imagecreatefrompng($image);
				break;
			default : die("UNKNOWN IMAGE TYPE: $image");
		}
		
		// WHICH FUNCTIONS CAN RESIZE / RESAMPLE THE IMAGE?
		if ($gdv >= 2)
		{

			// IF GD IS AT LEVEL 2 OR ABOVE
			$target = imagecreatetruecolor($width, $height);
			
			$color = imagecolorallocatealpha($target, 255, 255, 255, 127); 
			imagefill($target, 0, 0, $color);
			imagesavealpha($target, TRUE);
			$fromMidX = ceil($fromMidX);
			$fromMidY = ceil($fromMidY);
			imagecopyresampled ($target, $source, $fromMidX, $fromMidY, 0, 0, $newWidth, $newHeight, $imageX, $imageY);
			if($fromMidX > 0){
				imagefill($target, 0, 0, $color);
			}
			if($fromMidY > 0){ 
				imagefill($target, 0, 0, $color);
			}
			
		}
		else
		{
			// IF GD IS AT A LOWER REVISION LEVEL
		   	$target = imagecreate($width, $height);
		   	imagesavealpha($target, TRUE);
				$empty = imagecolorallocatealpha($thumb,0x00,0x00,0x00,127);
				imagefill($target, 0, 0, $empty);
		   	imagecopyresized($target, $source, $fromMidX, $fromMidY, 0, 0, $newWidth, $newHeight, $imageX, $imageY);
		}
		
		// SHARPEN THE PIC
		$sharpenMatrix = array
		( array( -1.2, -1, -1.2 )
		, array( -1,   20, -1 )
		, array( -1.2, -1, -1.2 )
		)
		;
		$divisor = array_sum(array_map('array_sum', $sharpenMatrix));
		$offset  = 0;
		imageconvolution($target, $sharpenMatrix, $divisor, $offset);
	
		if(imagepng($target, $image,9)){
			imagedestroy($target);
		}
		return $image;
	}
}

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Any help would be appreciated, Dan