no longitude tags appearing

following is the full print out:

Array
(
[resolutionUnit] => Inches
[FileName] => 07140001.jpg
[FileSize] => 504276 bytes
[FileDateTime] => 11-Jun-2005 12:34:20
[FlashUsed] => 0
[make] => Canon
[model] => Canon PowerShot A70
[xResolution] => 180.00 (180/1) Inches
[yResolution] => 180.00 (180/1) Inches
[fileModifiedDate] => 2004:07:14 10:39:32
[YCbCrPositioning] => 1
[exposureTime] => 0.004 s (1/250) (1/250)
[fnumber] => f/2.8
[exifVersion] => 0220
[DateTime] => 2004:07:14 10:39:32
[dateTimeDigitized] => 2004:07:14 10:39:32
[componentConfig] => Does Not Exists
[jpegQuality] => Basic
[aperture] => 2.7979593450766
[exposureBias] => 0.00 (0/3)
[meteringMode] => matrix
[flashUsed] => No
[focalLength] => 5.41 (173/32)
[makerNote] => NOT IMPLEMENTED
[exifComment] => ASCIIMontane Grassy Woodland near start of Sam Jamieson Spur Track.
[flashpixVersion] => 0100
[colorSpace] =>

[Width] => 1024
[Height] => 768
[GPSLatitudeRef] => Reserved
[GPSLatitude] => Array
(
[Degrees] => 48
[Minutes] => 49
[Seconds] => 48
)

[focalPlaneYResolution] => 4923.08 (768000/156)
[sensing] => One-chip color area sensor
[sourceType] => 
[customRendered] => Normal Process
[exposureMode] => Auto Exposure
[whiteBalance] => 0
[zoomRatio] => 1.00 (2048/2048)
[screenCaptureType] => Standard
[compressScheme] => JPEG compression (thumbnails only)
[Thumbnail] => .cache_thumbs/07140001.jpg
[ThumbnailSize] => 6212 bytes
[CCDWidth] => 5.28mm
[imageComment] => Montane Grassy Woodland near start of Sam Jamieson Spur Track
[IsColor] => 1
[Process] => 192
[resolution] => 1024x768
[color] => Color
[jpegProcess] => Baseline
)


Read EXIF in 0.022079944610596 seconds

Is there any work around for this?

PhilE

Can you please send me the image containing GPS data at vinay@vinayras.com - i will analyse and reply back.

I have the same problem except no GPS data at all and the image does have the data. No latitude or longitude. Ref: http://journey2.net/map/gps/exampleReader.php

With the exception this is a great class.

Bill Kilborn, Florida, USA

Try the latest updated class at
open.vinayras.com/files/exifReader- ...

and please post your comments at:
open.vinayras.com/phpexifrw_exif_re ...


Vinay Yadav
Web-Developer
VinayRas Infotech
http://open.vinayras.com

"No Page Available" at the address posted for the upgrade.

Vinay,

Thanks for the module! I too had the latitude/longitude problem (along with the gps version). Using the information from these two sites I came up with the below changes that have worked for my application:
awaresystems.be/imaging/tiff/tiffta ...
en.wikipedia.org/wiki/Geotagging

The diff, sorry this is ugly:

--- exifReader.inc 2008-09-24 19:02:27.000000000 -0400
+++ exifReader.inc.new 2010-05-07 17:09:00.000000000 -0400
@@ -124,6 +124,8 @@

/** * Exif IFD */
define("TAG_EXIF_OFFSET","0x8769");
+/** * GPS tag */
+define("TAG_GPS_OFFSET","0x8825");
/** * Interoperability tag */
define("TAG_INTEROP_OFFSET","0xa005");
/** * Image input equipment manufacturer */
@@ -217,6 +219,7 @@
define("TAG_COLOR_SPACE","0xA001"); //ColorSpace
define("TAG_RELATED_SOUND_FILE","0xA004"); //Related audio file

+define("TAG_GPS_VERSION_ID","0x0000"); //
define("TAG_GPS_LATITUDE_REF","0x0001"); //
define("TAG_GPS_LATITUDE","0x0002"); //

@@ -1035,6 +1038,13 @@
case TAG_RELATED_SOUND_FILE:
$this->ImageInfo['h']["relatedSoundFile"] = $this->string_format(substr($ValuePtr,0,$ByteCount));
break;
+ case TAG_GPS_VERSION_ID:
+ if ($ByteCount == 4) {
+ $this->ImageInfo['h']["GPSVersionID"] = ord(substr($ValuePtr,0,1)) . ' '
+ . ord(substr($ValuePtr,1,1)) . ' '
+ . ord(substr($ValuePtr,2,1)) . ' '
+ . ord(substr($ValuePtr,3,1));
+ }
case TAG_GPS_LATITUDE_REF:
$this->ImageInfo['h']["GPSLatitudeRef"] = $this->string_format(substr($ValuePtr,0,$ByteCount));
$this->ImageInfo['h']["GPSLatitudeRef"] = trim($this->ImageInfo['h']["GPSLatitudeRef"]);
@@ -1048,20 +1058,37 @@
}
break;
case TAG_GPS_LATITUDE:
- $tmp = substr($ValuePtr,0,$ByteCount);
-
- $this->ImageInfo['h']["GPSLatitude"]["Degrees"] = ord(substr($tmp,0,1));
- $this->ImageInfo['h']["GPSLatitude"]["Minutes"] = ord(substr($tmp,1,1));
- $this->ImageInfo['h']["GPSLatitude"]["Seconds"] = ord(substr($tmp,2,1));
+ if ($ByteCount == 24) {
+ $degNum = $this->Get32s($ValuePtr[0],$ValuePtr[1],$ValuePtr[2],$ValuePtr[3]);
+ $degDen = $this->Get32s($ValuePtr[4],$ValuePtr[5],$ValuePtr[6],$ValuePtr[7]);
+ $minNum = $this->Get32s($ValuePtr[8],$ValuePtr[9],$ValuePtr[10],$ValuePtr[11]);
+ $minDen = $this->Get32s($ValuePtr[12],$ValuePtr[13],$ValuePtr[14],$ValuePtr[15]);
+ $secNum = $this->Get32s($ValuePtr[16],$ValuePtr[17],$ValuePtr[18],$ValuePtr[19]);
+ $secDen = $this->Get32s($ValuePtr[20],$ValuePtr[21],$ValuePtr[22],$ValuePtr[23]);
+ $deg = ($degNum/$degDen);
+ $min = ($minNum/$minDen);
+ $sec = ($secNum/$secDen);
+ $this->ImageInfo['h']["GPSLatitude"]["Degrees"] = $deg;
+ $this->ImageInfo['h']["GPSLatitude"]["Minutes"] = $min;
+ $this->ImageInfo['h']["GPSLatitude"]["Seconds"] = $sec;
+ }
break;

case TAG_GPS_LONGITUDE:
- $tmp = substr($ValuePtr,0,$ByteCount);
-
- $this->ImageInfo['h']["GPSLongitude"]["Degrees"] = ord(substr($tmp,0,1));
- $this->ImageInfo['h']["GPSLongitude"]["Minutes"] = ord(substr($tmp,1,1));
- $this->ImageInfo['h']["GPSLongitude"]["Seconds"] = ord(substr($tmp,2,1));
-
+ if ($ByteCount == 24) {
+ $degNum = $this->Get32s($ValuePtr[0],$ValuePtr[1],$ValuePtr[2],$ValuePtr[3]);
+ $degDen = $this->Get32s($ValuePtr[4],$ValuePtr[5],$ValuePtr[6],$ValuePtr[7]);
+ $minNum = $this->Get32s($ValuePtr[8],$ValuePtr[9],$ValuePtr[10],$ValuePtr[11]);
+ $minDen = $this->Get32s($ValuePtr[12],$ValuePtr[13],$ValuePtr[14],$ValuePtr[15]);
+ $secNum = $this->Get32s($ValuePtr[16],$ValuePtr[17],$ValuePtr[18],$ValuePtr[19]);
+ $secDen = $this->Get32s($ValuePtr[20],$ValuePtr[21],$ValuePtr[22],$ValuePtr[23]);
+ $deg = ($degNum/$degDen);
+ $min = ($minNum/$minDen);
+ $sec = ($secNum/$secDen);
+ $this->ImageInfo['h']["GPSLongitude"]["Degrees"] = $deg;
+ $this->ImageInfo['h']["GPSLongitude"]["Minutes"] = $min;
+ $this->ImageInfo['h']["GPSLongitude"]["Seconds"] = $sec;
+ }
break;

case TAG_GPS_LONGITUDE_REF:
@@ -1319,6 +1346,13 @@
break;
//---------------------------------------------
case TAG_EXIF_OFFSET:
+ case TAG_GPS_OFFSET:
+ {
+
+ $SubdirStart = substr($OffsetBase,$this->Get32u($ValuePtr[0],$ValuePtr[1],$ValuePtr[2],$ValuePtr[3]));
+ $this->ProcessExifDir($SubdirStart, $OffsetBase, $ExifLength);
+ continue;
+ }
case TAG_INTEROP_OFFSET:
{

Thanks for improving ! It's works well.