note 96283 added to function.imagesetpixel

Given an image $src and mask $mask, this applies the mask over the image, using different levels of transparency properly. <?php function image_mask(&$src, &$mask) { imagesavealpha($src, true); imagealphablending($src, false); // scan image pixels for ($x = 0; $x < imagesx($src); $x++) { for ($y = 0; $y < imagesy($src); $y++) { $mask_pix = imagecolorat($mask,$x,$y); $mask_pix_color = imagecolorsforindex($mask, $mask_pix); if ($mask_pix_color['alpha'] < 127) { $src_pix = imagecolorat($src,$x,$y); $src_pix_array = imagecolorsforindex($src, $src_pix); imagesetpixel($src, $x, $y, imagecolorallocatealpha($src, $src_pix_array['red'], $src_pix_array['green'], $src_pix_array['blue'], 127 - $mask_pix_color['alpha'])); } } } } ?> If your mask is reversed, change 127 - $mask_pix_color['alpha'] with just $mask_pix_color['alpha'] ---- Server IP: 117.55.229.1 Probable Submitter: 118.210.224.140 ---- Manual Page -- http://www.php.net/manual/en/function.imagesetpixel.php Edit -- https://master.php.net/note/edit/96283 Del: integrated -- https://master.php.net/note/delete/96283/integrated Del: useless -- https://master.php.net/note/delete/96283/useless Del: bad code -- https://master.php.net/note/delete/96283/bad+code Del: spam -- https://master.php.net/note/delete/96283/spam Del: non-english -- https://master.php.net/note/delete/96283/non-english Del: in docs -- https://master.php.net/note/delete/96283/in+docs Del: other reasons-- https://master.php.net/note/delete/96283 Reject -- https://master.php.net/note/reject/96283 Search -- https://master.php.net/manage/user-notes.php