I need help rotating a .gif image with a transparent background in php

[K.out]

Hello,

 

  I need help rotating a .gif with a transparent background in php.  I have php 5.2.8 and GD version bundled (2.0.34).  Below is that code that I currently have I developed it from a variety of sources.  The background appears to be black when I run it by itself.  However, I tried to add this code to the file that I intend to use it in and I prints a bunch of stuff that I don't understand.  Once, I have the code to rotate the image 180 degrees and keep the transparent background.  I would like to use it in a .php file where I will insert the new image in an HTML table.

 

<?php
header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" );
header( "Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT" );
header( "Cache-Control: no-store, no-cache, must-revalidate" );
header( "Cache-Control: post-check=0, pre-check=0", false );
header( "Pragma: no-cache" );
$imagepath="blkpc6.gif";
$degrees=180;
$image=imagecreatefromgif($imagepath);
imagealphablending($image, false);
imagesavealpha($image,true);
$transparent = imagecolorallocatealpha($image, 255, 255, 255, 127);
$rotate = imagerotate($image, $degrees, $transparent);
header('Content-Type: image/gif');
imagegif($rotate);
imagedestroy($rotate);
imagedestroy($image);
?>

 

Please, help me solve this problem.  I have tried to solve it to no end the last couple of days with no luck.  Thank you for your help.