PHP script not working

[rkrocks327]

Hello,

I have a script I've been planning on using to create temporary thumbnails for a picture gallery. I've adapted a code that just resizies an image into one that automatically adjusts the image size based on its orientation. This script is working. However, I would like to then crop that image into a square with a side length of the shortest side of the thumbnail (Kind of like Flickr.com thumbnails).

Here's the first script, the one that just detects the orientation and adjusts the size accordingly.

<?
function image_resize($image_file, $width, $height, $download)
         {
         $src = "jpg-resize.php?" . 
                "image_file=" . urlencode($image_file) . "&" .
                "width=" . $width . "&" .
                "height=" . $height;

     $img = "<img " .
            "border=\"0\" " .
            "width=\"" . $width . "\" " .
            "height=\"" . $height . "\" " .
            "src=\"" . $src . "\" />";

     if($download == true)
        $img = "<a href=\"" . $image_file . "\">\n" .
               $img . "</a>";

     echo($img);
     }

function image_horizontal_resize($image_file, $width, $download)
         {
         $original_size = getImageSize($image_file);
         $original_width = $original_size[0]; 
         $original_height = $original_size[1];

     $height = round($original_height * ($width / $original_width));

     image_resize($image_file, $width, $height, $download);
     }

function image_vertical_resize($image_file, $height, $download)
         {
         $original_size = getImageSize($image_file);
         $original_width = $original_size[0]; 
         $original_height = $original_size[1];

     $width = round($original_width * ($height / $original_height));

     image_resize($image_file, $width, $height, $download);
     }

if(isset($_GET))
{
  $original_size = getImageSize($image_file);
  $original_width = $original_size[0]; 
  $original_height = $original_size[1];

  if($original_height > $original_width)
  {

header("Content-type: image/jpeg");

$image_file = $HTTP_GET_VARS["image_file"];
$width = $HTTP_GET_VARS["height"];
$height = $HTTP_GET_VARS["width"];  

$original_jpg = imageCreateFromJPEG($image_file);
$resized_png = imageCreateTrueColor($width, $height);

imageCopyResampled($resized_png, $original_jpg, 0, 0, 0, 0, 
               $width, $height, $original_width, $original_height);

imagePNG($resized_png);
imageDestroy($resized_png);
  }

  else if($original_width > $original_height)
  {

header("Content-type: image/jpeg");

$image_file = $HTTP_GET_VARS["image_file"];
$width = $HTTP_GET_VARS["width"];
$height = $HTTP_GET_VARS["height"];  

$original_jpg = imageCreateFromJPEG($image_file);
$resized_png = imageCreateTrueColor($width, $height);

imageCopyResampled($resized_png, $original_jpg, 0, 0, 0, 0, 
               $width, $height, $original_width, $original_height);

imagePNG($resized_png);
imageDestroy($resized_png);
  }
}     

?>

And here's the script that crop them into squares (based on the previous script) that I can't seem to get working.

<?
function image_resize($image_file, $width, $height, $download)
         {
         $src = "jpg-resize.php?" . 
                "image_file=" . urlencode($image_file) . "&" .
                "width=" . $width . "&" .
                "height=" . $height;

     $img = "<img " .
            "border=\"0\" " .
            "width=\"" . $width . "\" " .
            "height=\"" . $height . "\" " .
            "src=\"" . $src . "\" />";

     if($download == true)
        $img = "<a href=\"" . $image_file . "\">\n" .
               $img . "</a>";

     echo($img);
     }

function image_horizontal_resize($image_file, $width, $download)
         {
         $original_size = getImageSize($image_file);
         $original_width = $original_size[0]; 
         $original_height = $original_size[1];

     $height = round($original_height * ($width / $original_width));

     image_resize($image_file, $width, $height, $download);
     }

function image_vertical_resize($image_file, $height, $download)
         {
         $original_size = getImageSize($image_file);
         $original_width = $original_size[0]; 
         $original_height = $original_size[1];

     $width = round($original_width * ($height / $original_height));

     image_resize($image_file, $width, $height, $download);
     }

function orientation_create($image_file, $height, $download)
{
if(isset($_GET))
{
  $original_size = getImageSize($image_file);
  $original_width = $original_size[0]; 
  $original_height = $original_size[1];

  if($original_height > $original_width)
  {

$image_file = $HTTP_GET_VARS["image_file"];
$width = $HTTP_GET_VARS["height"];
$height = $HTTP_GET_VARS["width"];  

$original_jpg = imageCreateFromJPEG($image_file);
$resized_png = imagecreatetruecolor($width, $height);
imageCopyResampled($resized_png, $original_jpg, 0, 0, 0, 0, $width, $height, $original_width, $original_height);
  }

  else if($original_width > $original_height)
  {

$image_file = $HTTP_GET_VARS["image_file"];
$width = $HTTP_GET_VARS["width"];
$height = $HTTP_GET_VARS["height"];  

$original_jpg = imageCreateFromJPEG($image_file);
$resized_png = imagecreatetruecolor($width, $height);
imageCopyResampled($resized_png, $original_jpg, 0, 0, 0, 0, $width, $height, $original_width, $original_height);
}

if($width >= $height)
{
$crop = $height;
$offset = round(($width - $height) / 2);
$final_png = imagecreatetruecolor($crop,$crop);
header("Content-type: image/png");
ImageCopy($final_png, $resized_png, 0, 0, $offset, 0, $crop, $crop);
}

else if($height > $width)
{
$crop = $width;
$offset = round(($height - $width) / 2);
$final_png = imagecreatetruecolor($crop,$crop);
header("Content-type: image/jpeg");
ImageCopy($final_png, $resized_png, 0, 0, 0, $offset, $crop, $crop);
}

imagepng($final_png);
imageDestroy($final_png);

}
}
?>

I'm running an Apache 2 server on a FreeBSD system. I have PHP v4.4.2, with GD library preinstalled. Any ideas?