Resize Image and upload problem

[BizzyLizzy]

Hi All

I am trying to resize an image (create a thumbnail) and then upload it. Now the uploading part works fine but when I add in the code for resizing it, all I get is a blank page saying http 500 internal server error. I have error reporting switched on but still not getting anything. Could somebody please have a look at my code and see if they can spot where I have gone wrong.

	function uploadImage($inputName, $uploadDir) {

		$image     = $_FILES[$inputName];
		$imagePath = '';

		//$inputName = uniqid("whc").".jpg";
		
		if (trim($image['tmp_name']) != '') {
        // get the image extension
        $ext = substr(strrchr($image['name'], "."), 1); 

        // generate a random new file name to avoid name conflict
        $imagePath = md5(rand() * time()) . ".$ext";
		
		$size = getimagesize($image['tmp_name']);
	
		if ($size[0] > 75) {
			$imagePath = createThumbnail($image['tmp_name'], $uploadDir . $imagePath, 75);
		} else {
			// move the image to category image directory
			// if fail set $imagePath to empty string
			if (!move_uploaded_file($image['tmp_name'], $uploadDir . $imagePath)) {
				$imagePath = '';
			}
		}	
    }

    
    return $imagePath;
}

	Create a thumbnail of $srcFile and save it to $destFile.
	The thumbnail will be $width pixels.
*/
function createThumbnail($srcFile, $destFile, $width, $quality = 75)
{
	$thumbnail = '';
	
	if (file_exists($srcFile)  && isset($destFile))
	{
		$size        = getimagesize($srcFile);
		$w           = number_format($width, 0, ',', '');
		$h           = number_format(($size[1] / $size[0]) * $width, 0, ',', '');
		
		$thumbnail =  copyImage($srcFile, $destFile, $w, $h, $quality);
	}
	
	// return the thumbnail file name on sucess or blank on fail
	return basename($thumbnail);
}

function copyImage($srcFile, $destFile, $w, $h, $quality = 75)
{
    $tmpSrc     = pathinfo(strtolower($srcFile));
    $tmpDest    = pathinfo(strtolower($destFile));
    $size       = getimagesize($srcFile);

    if ($tmpDest['extension'] == "gif" || $tmpDest['extension'] == "jpg")
    {
       $destFile  = substr_replace($destFile, 'jpg', -3);
       $dest      = imagecreatetruecolor($w, $h);
       imageantialias($dest, TRUE);
    } elseif ($tmpDest['extension'] == "png") {
       $dest = imagecreatetruecolor($w, $h);
       imageantialias($dest, TRUE);
    } else {
      return false;
    }

    switch($size[2])
    {
       case 1:       //GIF
           $src = imagecreatefromgif($srcFile);
           break;
       case 2:       //JPEG
           $src = imagecreatefromjpeg($srcFile);
           break;
       case 3:       //PNG
           $src = imagecreatefrompng($srcFile);
           break;
       default:
           return false;
           break;
    }

    imagecopyresampled($dest, $src, 0, 0, 0, 0, $w, $h, $size[0], $size[1]);

    switch($size[2])
    {
       case 1:
       case 2:
           imagejpeg($dest,$destFile, $quality);
           break;
       case 3:
           imagepng($dest,$destFile);
    }
    return $destFile;

}

I have a feeling that the code is breaking somewhere in the createthumbnail function but I am blowed if I can figure this out.

Here's hoping somebody out there will be able to help.

Cheers

Lizzy