"Al Pro" <[EMAIL PROTECTED]> writes: Hi,
Your message was stuck in moderation -- I have now configured the list to allow your address to post. I've CCed this reply to you too, let us know if you don't want that. > I'm very new to OOP and PEL is really scares me. Well, PEL is rather OO heavy... consider it a fun way to learn OO :-) > I'm trying to read GPS data from photos, but I can't. > > I'm trying this: > > -------------------- > $file = "/home/re/gps1.jpg"; > $data = new PelDataWindow(file_get_contents($file)); > > $jpeg = new PelJpeg(); > $jpeg->load($data); In PEL 0.9.1 you can simply do $jpeg = new PelJpeg($file); and then PEL will figure out to load the data from the file. It is simply shorter than what you wrote, but does the same. > $app1 = $jpeg->getExif(); > $tiff = $app1->getTiff(); > > $ifd0 = $tiff->getIfd(); > $entry = $ifd0->getEntry(PelTag::GPS_LONGITUDE); > > print "Longitude: ".$entry; > -------------------- > > But I get nothing. What am I doing wrong? The GPS data is not stored in the IFD0. So the getEntry() call returns null. You need to do: $gps = $ifd0->getSubIfd(PelIfd::GPS); and then your GPS_LONGITUDE entry should be in the $gps IFD. If you think this is complicated, then I agree :-) PEL parses the structure for you, but you still need to know where to find the right bits of information. Using the dump-image.php file can help. > Another question is how can I easy add Exiff data, even if JPEG file > doesn't have any Exif data in it? Is there any PHP sample that shows > how can I do it? Please have a look at this URL in which a user explained how he added data (including GPS!) to an empty JPEG file: http://sf.net/tracker/?func=detail&atid=650323&aid=1815728&group_id=108380 -- Martin Geisler --- <[EMAIL PROTECTED]> --- http://mgeisler.net
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