PNG Transparency Not Maintained about timthumb HOT 7 CLOSED

I'd like to fix this but I don't know how... if anyone has any better knowledge 
of GD
could step in and help it'd be most appreciated.

This can be resolved by modifying the following line
//---------------
    $image = open_image( $mime_type, $src );
//---------------

with

//---------------
if($mime_type=='png'){
$image = imagecreatefrompng($src); // open image
imagealphablending($image, true); // setting alpha blending on
imagesavealpha($image, true); // save alphablending setting (important)

}else
{
    $image = open_image( $mime_type, $src );
}
//---------------

I can't get the PNG transparency to work with these changes. I still get black 
background where the alfa 
transparency is.

I also can't get the PNG transparency to work with these changes. I still get 
black background where the alfa 
transparency is.

I have tried the same and this does not appear to resolve the issue either --- 
it
should be noted though that the code for my timthumb script appears to have some
filtering of the type already -- maybe there is something not right with this.


CODE

// check to see if GD function exist
if(!function_exists('imagecreatetruecolor')) {
    $error = "GD Library Error: imagecreatetruecolor does not exist";
    die( $error );
}

if(strlen($src) && file_exists( $src ) ) {

    // open the existing image
    $image = open_image( $mime_type, $src );
    if( $image === false ) { die( 'Unable to open image : ' . $src ); }     

END CODE

Update for anyone else who finds this and can't figure out what's going wrong...
visit the Google Code site 
http://timthumb.googlecode.com/svn/trunk/timthumb.php and
download the latest version of timthumb and replace your existing file, this 
resolves
the transparency issues for me! Thanks to Darren for his pointing this out on 
the
thread
here:http://www.darrenhoyt.com/2008/04/02/timthumb-php-script-released/#comment-
19131