Doğru fotoğraflar elde etmek için siyah arka plan olmadan strateji izlemelisiniz:
first create your new image item
set it's alphablending to false
set it's savealpha to true
fil it with transparent rectangle
copy your grayed picture over it
kodunuzu buna benzer olacaktır:
switch ($handle->file_src_name_ext) {
case 'gif':
$sourceIm = imagecreatefromgif($savepath.$handle->file_dst_name);
break;
case 'jpg':
$sourceIm = imagecreatefromjpeg($savepath.$handle->file_dst_name);
break;
case 'png':
default:
$sourceIm = imagecreatefrompng($savepath.$handle->file_dst_name);
break;
}
$iw = imagesx($sourceIm);
$ih = imagesy($sourceIm);
$im = imagecreatetruecolor($iw, $ih);
if (function_exists('imagecolorallocatealpha')) {
imagealphablending($im, false);
imagesavealpha($im, true);
$transparent = imagecolorallocatealpha($im, 255, 255, 255, 127);
imagefilledrectangle($im, 0, 0, $iw, $ih, $transparent);
}
if ($sourceIm ) {
imagefilter($sourceIm, IMG_FILTER_GRAYSCALE);
}
imagecopyresampled($im, $sourceIm, 0, 0, 0, 0, $iw, $ih, $iw, $ih);
switch ($handle->file_src_name_ext) {
case 'gif':
imagepng($im, $savepath.'grd'.$row->id.'.gif');
break;
case 'jpg':
imagejpeg($im, $savepath.'grd'.$row->id.'.jpg');
break;
case 'png':
default:
imagepng($im, $savepath.'grd'.$row->id.'.png');
break;
}
goodluck!
benim balda pomoshnik bir göz atın