#41748 [Opn]: exif_read_data returns corrupted GPS data

ID: 41748 Updated by: auroraeosrose@php.net Reported By: frederic dot maziere1 at neuf dot fr Status: Open -Bug Type: PHP-GTK related +Bug Type: EXIF related Operating System: W2000 and WXP PHP Version: 4.4.7 New Comment: Moved bug to right category Previous Comments: ------------------------------------------------------------------------ [2007-06-20 12:37:57] frederic dot maziere1 at neuf dot fr Description: ------------ While it works on many files exif_read_data returns corrupted GPS data on others. exif_read_data returns bad latitude and longitude values for the following file : http://trekmaniac3.free.fr/Canaries2006/images/thumb/IMG_3801.jpg FYI, xnview, robogeo (and others) are able to read and return correct GPS data from that file. The expected values are : latitude=27°38'26.39" longitude=17°58'49.93" When analyzing the data returns by exif_read_data, it looks like there's a 3 value shift in the array of the rational values returned. This problem occurs in every php version I tried : 4.3.10 or 5.2.0 Reproduce code: --------------- $exif=exif_read_data('IMG_3801.jpg'); foreach ($exif as $key => $section) { print_r($section); foreach ($section as $name => $val) { echo "$key.$name: $val<br />\n"; } } Expected result: ---------------- GPSLatitude.0: 452984832/16777216 GPSLatitude.1: 637534208/16777216 GPSLatitude.2: 442812995/16777216 GPSLongitude.0:285212672/16777216 GPSLongitude.1:973078528/16777216 GPSLongitude.2:837753660/16777216 ... Actual result: -------------- GPS tags returned : GPSLatitude.0: 542065991/808334710 GPSLatitude.1: 3224110/452984832 GPSLatitude.2: 16777216/637534208 GPSLongitude.0: 16777216/442812995 GPSLongitude.1: 16777216/285212672 GPSLongitude.2: 16777216/973078528 GPSTimeStamp.0: 16777216/837753660 GPSTimeStamp.1: 16777216/9 GPSTimeStamp.2: 1/49 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=41748&edit=1