Hello,
sorry about my bad english, I hope you understand me.
I tried to add tags for the gps-coordinates to a jpeg-file with existing
Exif-data.
This is, what I do (e.g. LAT 52° 30 45.0 and LON 9° 15 30.0):
$jpeg = new PelJpeg($filename);
$tiff = $exif->getTiff();
$ifd0 = $tiff->getIfd();
$desc1 = new PelEntryRational(PelTag::GPS_LATITUDE, array(52,1),
array(30,1), array(45,1));
$ifd0->addEntry($desc1);
$desc2 = new PelEntryRational(PelTag::GPS_LONGITUDE, array(9,1),
array(15,1), array(30,1));
$ifd0->addEntry($desc2);
$desc3 = new PelEntryAscii(PelTag::IMAGE_DESCRIPTION, 'only for test');
$ifd0->addEntry($desc3);
file_put_contents($new_filename, $jpeg->getBytes());
After processing the script (with no errors), there a no gps-tags in the
file.
If read the exif with:
$jpeg = new PelJpeg($filename);
$tiff = $exif->getTiff();
$ifd0 = $tiff->getIfd();
$lat = $ifd0->getEntry(PelTag::GPS_LATITUDE);
$lon = $ifd0->getEntry(PelTag::GPS_LONGITUDE);
$test = $ifd0->getEntry(PelTag:: IMAGE_DESCRIPTION);
The result is: $lat and $lon both are null, but $test is filled correctly.
What is my fault?
Greets, André
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