How to get rid of this black line around this png image with PHP?

[yepster123]

This script merges / watermarks too images together and then saves that final image to my server. But when it saves it to the server a black line appears around the new saved image on the corners on the image. The png image before the merge didnt have the black line. How do i get rid of it.

<?php 

header('content-type: image/png'); 

$watermark = imagecreatefrompng('watermark.png'); 

$watermark_width = imagesx($watermark); 

$watermark_height = imagesy($watermark); 

$image = imagecreatetruecolor($watermark_width, $watermark_height); 

$image = imagecreatefrompng($_GET['src']); 

$size = getimagesize($_GET['src']); 

$dest_x = $size[0] - $watermark_width - 2; 

$dest_y = $size[1] - $watermark_height - 25; 

imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100);

imagepng($image);

imagepng($image, 'lightwaves.png');

?>

[btherl]

I don't this is a core hacking issue.  It's more likely to do with the parameters you're passing to imagecopymerge()

[tippy_102]

I tested your code and didn't get the black line.  Maybe it's you're files?  If you want me to test with your files, please attached them and I'll give it a shot.

[freakstyle]

ps... png support on IE6 is horrid. use gif

[Jessica]

only if you're needing alpha transparency. Png is fine except for that in ie6