Bug #78442 [Ver->Csd]: "Illegal component" on exif_read_data since PHP7

Edit report at https://bugs.php.net/bug.php?id=78442&edit=1 ID: 78442 Updated by: kalle@php.net Reported by: prefix_php at digitalimagecorp dot de Summary: "Illegal component" on exif_read_data since PHP7 -Status: Verified +Status: Closed Type: Bug Package: EXIF related Operating System: Linux (multiple) PHP Version: 7.3.8 Block user comment: N Private report: N New Comment: Automatic comment on behalf of kalle Revision: http://git.php.net/?p=php-src.git;a=commit;h=2823e938d4911c265c8100e39164711be0241074 Log: Fixed bug #78442 ('Illegal component' on exif_read_data since PHP7) Previous Comments: ------------------------------------------------------------------------ [2019-08-21 21:41:11] prefix_php at digitalimagecorp dot de Description: ------------ When migrating my server from PHP 5.6 to PHP 7.2 / 7.3, processing EXIF data from several image files stopped working with error messages such as "PHP Warning: exif_read_data(DSC00053.JPG): Process tag(xA100=UndefinedTa): Illegal components(0) in Command line code on line 1" It seems at least some data can be extracted, but things like extracting the preview image using exif_thumbnail won't work. The reference picture can be found here: http://pompeji.digitalimagecorp.de/fotos/galerie-3/DSC00053.JPG The bug may be similar to https://bugs.php.net/bug.php?id=75785, but the error message is different. Test script: --------------- php -r '$exif = exif_read_data( "DSC00053.JPG", "EXIF" ); print_r($exif);' php -r 'exif_thumbnail("DSC00053.JPG");' Expected result: ---------------- Extracting the thumbnail with exif_thumbnail should work. Actual result: -------------- The thumbnail doesn't seem to be found in the EXIF data. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78442&edit=1