Ben şeffaf arka plan ile bir PNG filigran görüntü var. Ama rastgele yerine şeffaf kalma beyaz bir arka plan oluşturur.

// Watermark
$watermark = imagecreatefrompng($docRoot . '/images/misc/watermark.png');
list($mwidth, $mheight) = getimagesize($docRoot . '/images/misc/watermark.png');

// Combinde watermark image with image already generated in $dst
imagecopy($dst, $watermark, $tnWidth-$mwidth-5, $tnHeight-$mheight-5, 0, 0, $mwidth, $mheight);

Çözüm eklemek için:

imagealphablending($dst, true);
imagesavealpha($dst, true);

Tam kodu:

// Watermark
$watermark = imagecreatefrompng($docRoot . '/images/misc/watermark.png');
list($mwidth, $mheight) = getimagesize($docRoot . '/images/misc/watermark.png');

imagealphablending($dst, true);
imagesavealpha($dst, true);

// Combinde watermark image with image already generated in $dst
imagecopy($dst, $watermark, $tnWidth-$mwidth-5, $tnHeight-$mheight-5, 0, 0, $mwidth,