Legacy ImageMagick Discussions Archive

Code: Select all

<?

function read_jpg_desc($img_dir)
{
$mgck_wnd = NewMagickWand();
MagickReadImage($mgck_wnd, $img_dir);

$value=MagickGetImageProperty($mgck_wnd, "ImageDescription");

return $value;

}


function write_jpg_desc($img_dir, $desc)
{
$mgck_wnd = NewMagickWand();
MagickReadImage($mgck_wnd, $img_dir);

$result=MagickSetImageProperty($mgck_wnd, "ImageDescription", $desc);

MagickWriteImage($mgck_wnd, $img_dir);

return $result;
}


echo(read_jpg_desc("test.jpg")); // return null

write_jpg_desc("test.jpg", "Dabidi is cool"); // return true;

echo(read_jpg_desc("test.jpg")); // return null <--- !!!!!!
?>

Code: Select all

 <?
function write_jpg_desc($input, $description)
{

$output=$input;

require_once('pel/PelJpeg.php');
 
$data = new PelDataWindow(file_get_contents($input));
$jpeg = $file = new PelJpeg();
$jpeg->load($data);
 
$exif = $jpeg->getExif();

if(!$exif) 
{
$exif = new PelExif();
$jpeg->setExif($exif);

$tiff = new PelTiff();
$exif->setTiff($tiff);
}
else
{
 $tiff = $exif->getTiff();
}

$ifd0 = $tiff->getIfd();

if(!$ifd0) 
{
 $ifd0 = new PelIfd(PelIfd::IFD0);
  $tiff->setIfd($ifd0);
}

$desc = $ifd0->getEntry(PelTag::IMAGE_DESCRIPTION);

if(!$desc)
{
$desc = new PelEntryAscii(PelTag::IMAGE_DESCRIPTION, $description);
 $ifd0->addEntry($desc);
}
else
{
 $desc->setValue($description);
}

if(file_put_contents($output, $file->getBytes())) return true;
else return false;

}



function read_jpg_desc($file)
{
$metadata=exif_read_data($file);

if($metadata[ImageDescription]) 
return $metadata[ImageDescription];
else 
return false;
}

echo(read_jpg_desc("test.jpg")); // return null

write_jpg_desc("test.jpg", "Dabidi is cool"); // return true;

echo(read_jpg_desc("test.jpg")); // return Dabidi is cool   

?>