Description:
------------
I discovered the bug while reading EXIF data from this file: https://ufile.io/7dx86

The correct value of the GPSLongitude value in DMS format is:

122° 23' 38.1732"

For GPSLongitude, PHP's exif_read_data format returns the following:

array:3 [
 0 => "122/1"
 1 => "23/1"
 2 => "-1622773725/70000000"
]


Note the negative value in there. There should be no negative values since GPSLongitude is an array of unsigned rationals. As a result, the value calculated for the seconds component is -23.1824, which is incorrect.

The problem is that the bytes for the values are being written out as a signed integer instead of an unsigned integer. The values are being converted to a string using the wrong format specifier ("%i" instead of "%u"), so the fix is to simply fix the format specifier.