note 85678 added to function.imagecolortransparent

I found out the hard way that for two png's with alpha transparency to correctly stack you need to explicitly re-enable alpha blending. $img=imagecreatetruecolor($dx,$dy); $img1=imagecreatefrompng($png1); //first layer $img2=imagecreatefrompng($png2); //second layer (smaller image) imagealphablending($img, false); $transparent = imagecolorallocatealpha($img, 0, 0, 0, 127); imagefill($img, 0, 0, $transparent); imagesavealpha($img,true); imagealphablending($img, true); //removing this causes the second layer's transparency to go trough the 1st layer erasing it (the image >is< transparent there ... as is the 2nd layer ... but not the 1st so it should not be transparent) imagecopyresampled($img,$img1, imagecopyresampled($img,$img2, ---- Server IP: 69.147.83.197 Probable Submitter: 89.47.76.126 ---- Manual Page -- http://www.php.net/manual/en/function.imagecolortransparent.php Edit -- https://master.php.net/note/edit/85678 Del: integrated -- https://master.php.net/note/delete/85678/integrated Del: useless -- https://master.php.net/note/delete/85678/useless Del: bad code -- https://master.php.net/note/delete/85678/bad+code Del: spam -- https://master.php.net/note/delete/85678/spam Del: non-english -- https://master.php.net/note/delete/85678/non-english Del: in docs -- https://master.php.net/note/delete/85678/in+docs Del: other reasons-- https://master.php.net/note/delete/85678 Reject -- https://master.php.net/note/reject/85678 Search -- https://master.php.net/manage/user-notes.php