adding EXIF Information from scratch

Support Requests item #1815728, was opened at 2007-10-18
05:05
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Category: None
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: adding EXIF Information from scratch 

Initial Comment:
Hi,

I wrote this function, adding EXIF Information from the
scratch to a JPG-Image.

Unfortunately in the second GPS entry, the minutes and
seconds are missing. If longitude is the second then its
missing there, if i switch their places its missing in
latitude? It doesnt make any sense, so ... well i'm asking
for help here 

Here's the function (with german comments):

function add_EXIFinfo(	
	$filename = "filename.jpg Default",
	$description ="DESCRIPTION Default",
	$USER_COMMENT ="USER_COMMENT Default",
	$MODEL ="MODEL Default",
	$GPS_VERSION_ID ="123",
	$GPS_LONGITUDE = 0,
	$GPS_LATITUDE = 0,
	$GPS_LONGITUDE_REF = "E",
	$GPS_LATITUDE_REF = "N",
	$GPS_ALTITUDE  = array(0, 0, 0),
	$GPS_ALTITUDE_REF = 0) {
	
	$GPS_LONGITUDE = convertGps($GPS_LONGITUDE);
	$GPS_LATITUDE = convertGps($GPS_LATITUDE);
	
	$jpeg = new PelJpeg($filename); //Ein PelJpeg Objekt wird
erstellt (mit dem gegebenen JPG)
	$exif = new PelExif(); //Exif Objekt wird erstellt
	$jpeg->setExif($exif); //Exif Objekt wird dem JPG
hinzugefügt
	$tiff = new PelTiff(); // Tiff Objekt wird erzeugt (Tiff
Objekt enthält exif info)
	$exif->setTiff($tiff); //Dem Exif-Objekt wird das Tiff
Objekt zugewiesen
	
	$ifd0 = $tiff->getIfd(); //erste Exif-Info wird aus dem
tiff Obj herausgelesen ( müsste "null" sein)
	
	
	if ($ifd0 == null) {
	  $ifd0 = new PelIfd(PelIfd::IFD0);
	  $tiff->setIfd($ifd0);
	}
	
	$GPSSubIFD = new PelIfd(PelIfd::GPS); //SubIFD für
GPS-Informationen wird erstellt.
	$ifd0->addSubIfd($GPSSubIFD); //dem Ifd0 wird GPS sub
IFD hinzugefügt
	
	$EXIFSubIFD = new PelIfd(PelIfd::EXIF); //SubIFD für
EXIF-Informationen wird erstellt.
	$ifd0->addSubIfd($EXIFSubIFD); //dem Ifd0 wird EXIF sub
IFD hinzugefügt
	
	$INTOSubIFD = new PelIfd(PelIfd::INTEROPERABILITY);
//SubIFD für INTEROPERABILITY-Informationen wird erstellt.
	$ifd0->addSubIfd($INTOSubIFD); //dem Ifd0 wird
INTEROPERABILITY sub IFD hinzugefügt
	
	
	echo "USER_COMMENT wird geschrieben<br>";
	$exif_entry = new PelEntryUserComment($USER_COMMENT);
	$ifd0->addEntry($exif_entry);
	
	echo "MODEL wird geschrieben<br>";
	$exif_entry = new PelEntryAscii(PelTag::MODEL, $MODEL);
	$ifd0->addEntry($exif_entry);
	
	echo "IMAGE_DESCRIPTION wird
geschrieben<br>";
	//IMAGE_DESCRIPTION
	$desc = new PelEntryAscii(PelTag::IMAGE_DESCRIPTION,
$description);
	$ifd0->addEntry($desc);
	
	echo "GPS_VERSION_ID wird geschrieben<br>";
	$exif_entry = new
PelEntryByte(PelTag::GPS_VERSION_ID,$GPS_VERSION_ID);
	$GPSSubIFD->addEntry($exif_entry);
	
	
	
	
	echo "GPS_LATITUDE_REF wird
geschrieben<br>";
	$exif_entry = new PelEntryAscii(PelTag::GPS_LATITUDE_REF,
$GPS_LATITUDE_REF);
	$GPSSubIFD->addEntry($exif_entry);
	
	echo "GPS_LATITUDE wird geschrieben<br>";
	$exif_entry = new PelEntryRational(PelTag::GPS_LATITUDE,
$GPS_LATITUDE);
	print_r($GPS_LATITUDE);
	$GPSSubIFD->addEntry($exif_entry);
	
	echo "GPS_LONGITUDE_REF wird
geschrieben<br>";
	$exif_entry4 = new PelEntryAscii(PelTag::GPS_LONGITUDE_REF,
$GPS_LONGITUDE_REF);
	$GPSSubIFD->addEntry($exif_entry4);

	echo "GPS_LONGITUDE wird geschrieben<br>";
	$exif_entry = new PelEntryRational(PelTag::GPS_LONGITUDE,
$GPS_LONGITUDE);
	print_r($GPS_LONGITUDE);
	$GPSSubIFD->addEntry($exif_entry);
	
	echo "GPS_ALTITUDE wird geschrieben<br>";
	$exif_entry = new PelEntryRational(PelTag::GPS_ALTITUDE,
$GPS_ALTITUDE);
	$GPSSubIFD->addEntry($exif_entry);
	
	echo "GPS_ALTITUDE_REF wird
geschrieben<br>";
	$exif_entry = new PelEntryAscii(PelTag::GPS_ALTITUDE_REF,
$GPS_ALTITUDE_REF);
	$GPSSubIFD->addEntry($exif_entry);
	
	$file = basename($filename);  
	
	file_put_contents("tagged_pics/".$file,
$jpeg->getBytes());
}

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