PHP | imagejpeg() | from .gif to .jpg | black background?

Asked Jul 28 '17 at 19:05

Active Jul 28 '17 at 20:56

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Trying to take a .gif and make it a .jpg with white background using imagejpeg().

If I do this from a .jpg file all is well and good with a white background, but using from a .gif creates black background ...

$src = imagecreatefromgif($original_file);
$tmp = imagecreatetruecolor($new_width, $new_height);
imagealphablending($tmp, false);
imagesavealpha($tmp, true);
$transparent = imagecolorallocatealpha($tmp, 255, 255, 255, 127);
imagefilledrectangle($tmp, 0, 0, $new_width, $new_height, $transparent);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($tmp, $new_file, 80);

TROUBLESOME GIF

CODE IN THE DUPLICATE WORKS

The duplicate in question is about converting PNGs to JPG. But there is code that that works for converting GIFs to JPG.

edited Jul 28 '17 at 20:56

asked Jul 28 '17 at 19:05

ma77c

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To a JPEG with transparent background? I'm quite sure jpeg does not handle transparent. – Andreas Jul 28 '17 at 19:39
@Andreas You are correct. I mean a white background – ma77c Jul 28 '17 at 19:39
@Andreas That question is about PNG to JPG. The OP even states that he tried the same process with PNG and GIF and got different results. – ma77c Jul 28 '17 at 19:59
How about sharing your troublesome GIF? – Mark Setchell Jul 28 '17 at 20:10
@MarkSetchell I have added the troublesome GIF – ma77c Jul 28 '17 at 20:12
There is code in the question about Gif -> jpeg. – Andreas Jul 28 '17 at 20:28
@Andreas The code in the other question works for what I am trying to do .. I apologize. Not trying to start a flame war. – ma77c Jul 28 '17 at 20:55
No worries. I'm not angry or upset in any way. I'm just trying to help. – Andreas Jul 29 '17 at 05:18

PHP | imagejpeg() | from .gif to .jpg | black background?

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