Copy an image and preserve its EXIF/IPTC data with PHP imageCreateFromJpeg?

Question

I having some problems with an image that has EXIF/IPTC data stored in it.
When I use imageCreateFromJpeg (to rotate/crop or etc) the newly stored file doesn't preserve the EXIF/IPTC data.

My current code looks like this:

<?php
// Before executing - EXIF/IPTC data is there (checked)
$image = "/path/to/my/image.jpg";
$source = imagecreatefromjpeg($image);
$rotate = imagerotate($source,90,0);
imageJPEG($rotate,$image);
// After executing  - EXIF/IPTC data doesn't exist anymore. 
?>

Am I doing something wrong?

Answer 1

You aren't doing anything wrong, but GD doesn't deal with Exif of IPTC data at all as its beyond the scope of what GD does.

You will have to use a 3rd party library or other PHP extension to read the data from the source image and re-insert it to the output image created by imagejpeg.

Here are some libraries of interest: pel (php exif library), an example on php.net showing how to use pel to do what you want, php metadata toolkit, iptcembed() function.