Bug #73004 [Asn->Fbk]: PHP 5.6 Doesn't Read EXIF Location

Edit report at https://bugs.php.net/bug.php?id=73004&edit=1 ID: 73004 Updated by: kalle@php.net Reported by: tom_kincaid at hotmail dot com Summary: PHP 5.6 Doesn't Read EXIF Location -Status: Assigned +Status: Feedback Type: Bug Package: EXIF related Operating System: Centos 7 PHP Version: 5.6.25 Assigned To: kalle Block user comment: N Private report: N New Comment: Hi Could you please re-upload the image? I believe that a recent bug fix I did to the EXIF extensionn may have fixed this in the process and I need something to verify this. Thanks! Previous Comments: ------------------------------------------------------------------------ [2016-10-16 04:58:56] alex at twbsd dot org Started from 5.6.24, exif can't read GPS location any more. It worked at 5.6.23. But I tested 5.6.24~5.6.27 and 7.0.12 all won't work. Test code: #!/usr/local/bin/php <?php $e = exif_read_data("IMG_4017.JPG", 0,true,false); var_dump($e['GPS']); Remove the following code in exif.c, the GPS info can be read again: ===== if (offset_diff < 0 || offset_diff >= value_len ) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data bad offset: 0x%04X length 0x%04X", offset_diff, value_len); return FALSE; } ===== ------------------------------------------------------------------------ [2016-09-14 21:23:01] dotpointer at gmail dot com I'm running Debian 8.5 and the Debian (apt-get) supplied version: PHP 5.6.24-0+deb8u1. I have also this bug - exif_read_data() has stopped outputting GPS tags in my case. I guess it has todo with the security fix recently applied, noted here: http://stackoverflow.com/questions/38772471/php-exif-read-data-no-longer-extracts-gps-location I understand that security fixes are crucial, but don't know how this regression in functionality could have reached production level as I'm running an updated standard Debian installation and not testing. GPS reading implementations in PHP are probably breaking all around the planet right now. I hope this will be fixed soon for 5.6+ too. ------------------------------------------------------------------------ [2016-09-02 14:10:35] tom_kincaid at hotmail dot com Description: ------------ exif_read_data on 5.6 doesn't read the EXIF location data. This data is in the photo, but doesn't appear in the response from exif_read_data [GPSLatitudeRef] => N [GPSLatitude] => Array ( [0] => 40/1 [1] => 42/1 [2] => 4941/100 ) [GPSLongitudeRef] => W [GPSLongitude] => Array ( [0] => 73/1 [1] => 57/1 [2] => 2954/100 ) Here is a sample image with EXIF GPS location: https://dl.dropboxusercontent.com/u/34732957/test.jpg Test script: --------------- $exif = exif_read_data ("/path/to/photo.jpg"); print_r($exif); Expected result: ---------------- Array ( [FileName] => test.jpg [FileDateTime] => 1472824820 [FileSize] => 1406969 [FileType] => 2 [MimeType] => image/jpeg [SectionsFound] => ANY_TAG, IFD0, THUMBNAIL, EXIF, GPS [COMPUTED] => Array ( [html] => width="3264" height="2448" [Height] => 2448 [Width] => 3264 [IsColor] => 1 [ByteOrderMotorola] => 1 [ApertureFNumber] => f/2.2 [Thumbnail.FileType] => 2 [Thumbnail.MimeType] => image/jpeg ) [Make] => Apple [Model] => iPhone 5s [Orientation] => 1 [XResolution] => 72/1 [YResolution] => 72/1 [ResolutionUnit] => 2 [Software] => 9.2 [DateTime] => 2016:04:10 17:05:26 [YCbCrPositioning] => 1 [Exif_IFD_Pointer] => 198 [GPS_IFD_Pointer] => 1612 [THUMBNAIL] => Array ( [Compression] => 6 [XResolution] => 72/1 [YResolution] => 72/1 [ResolutionUnit] => 2 [JPEGInterchangeFormat] => 1952 [JPEGInterchangeFormatLength] => 9663 ) [ExposureTime] => 1/1709 [FNumber] => 11/5 [ExposureProgram] => 2 [ISOSpeedRatings] => 32 [ExifVersion] => 0221 [DateTimeOriginal] => 2016:04:10 17:05:26 [DateTimeDigitized] => 2016:04:10 17:05:26 [ComponentsConfiguration] =>
 [ShutterSpeedValue] => 19277/1795 [ApertureValue] => 7983/3509 [BrightnessValue] => 6632/653 [ExposureBiasValue] => 0/1 [MeteringMode] => 5 [Flash] => 24 [FocalLength] => 83/20 [SubjectLocation] => Array ( [0] => 1632 [1] => 1224 [2] => 1793 [3] => 1073 ) [MakerNote] => Apple iOS... [SubSecTimeOriginal] => 986 [SubSecTimeDigitized] => 986 [FlashPixVersion] => 0100 [ColorSpace] => 1 [ExifImageWidth] => 3264 [ExifImageLength] => 2448 [SensingMethod] => 2 [SceneType] =>
[ExposureMode] => 0 [WhiteBalance] => 0 [DigitalZoomRatio] => 1224/463 [FocalLengthIn35mmFilm] => 76 [SceneCaptureType] => 0 [UndefinedTag:0xA432] => Array ( [0] => 83/20 [1] => 83/20 [2] => 11/5 [3] => 11/5 ) [UndefinedTag:0xA433] => Apple [UndefinedTag:0xA434] => iPhone 5s back camera 4.15mm f/2.2 [GPSLatitudeRef] => N [GPSLatitude] => Array ( [0] => 40/1 [1] => 42/1 [2] => 4941/100 ) [GPSLongitudeRef] => W [GPSLongitude] => Array ( [0] => 73/1 [1] => 57/1 [2] => 2954/100 ) [GPSAltitudeRef] => [GPSAltitude] => 9068/843 [GPSTimeStamp] => Array ( [0] => 21/1 [1] => 5/1 [2] => 2426/100 ) [GPSSpeedRef] => K [GPSSpeed] => 0/1 [GPSDateStamp] => 2016:04:10 [UndefinedTag:0x001F] => 65/1 ) Actual result: -------------- Array ( [FileName] => test.jpg [FileDateTime] => 1472776885 [FileSize] => 1406969 [FileType] => 2 [MimeType] => image/jpeg [SectionsFound] => ANY_TAG, IFD0, EXIF [COMPUTED] => Array ( [html] => width="3264" height="2448" [Height] => 2448 [Width] => 3264 [IsColor] => 1 [ByteOrderMotorola] => 1 [ApertureFNumber] => f/2.2 ) [Make] => Apple [Model] => iPhone 5s [Orientation] => 1 [XResolution] => 72/1 [YResolution] => 72/1 [ResolutionUnit] => 2 [Software] => 9.2 [DateTime] => 2016:04:10 17:05:26 [YCbCrPositioning] => 1 [ExposureTime] => 1/1709 [FNumber] => 11/5 [ExposureProgram] => 2 [ISOSpeedRatings] => 32 [ExifVersion] => 0221 [DateTimeOriginal] => 2016:04:10 17:05:26 [DateTimeDigitized] => 2016:04:10 17:05:26 [ComponentsConfiguration] =>
 [ShutterSpeedValue] => 19277/1795 [ApertureValue] => 7983/3509 [BrightnessValue] => 6632/653 [ExposureBiasValue] => 0/1 [MeteringMode] => 5 [Flash] => 24 [FocalLength] => 83/20 [SubjectLocation] => Array ( [0] => 1632 [1] => 1224 [2] => 1793 [3] => 1073 ) ) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=73004&edit=1