Cannot access phar file entry '/' in archive 'myfile.tgz'

[BigNerd]

Describe the bug

When trying to extract a .tgz file with UnifiedArchive it reports the following error message:
In Tar.php line 369:
"Cannot access phar file entry '/' in archive 'myfile.tgz'"

Doing the same with CLI commands gunzip myfile.tgz & tar xf myfile.tar works fine.

Configuration

• OS: linux debian 9.3
• Version of library: 0.1.2
• Satisfied Composer dependencies (selection)
  "php": "^7.0",
  "ext-phar": "",
  "ext-zip": "",
  "ext-zlib": "*",
  "pear/archive_tar": "~1.4.3",
  "wapmorgan/unified-archive": "^0.1"

tar -tvf myfile.tar shows this (shortened list):
drwxr-xr-x web/users 0 2019-01-11 02:10 ./
-rw-r--r-- web/users 15254 2019-01-11 02:10 ./myfile.xml

To Reproduce

$archive = UnifiedArchive::open($absoluteArchiveFilePath);
$numberOfFiles = $archive->extractFiles($absoluteTargetDirPath);

Expected behavior

Contents of .tgz file should be extracted to the target directory.

[wapmorgan]

Can you attach this archive?

[BigNerd]

UnifiedArchive seems to have trouble with the entry ./ in the tar file. The file myfile.tgz which causes the error message when trying to extract it can be created as follows:
tmp# ls
myfile.xml

tmp# tar -cvf myfile.tar .
./
tar: ./myfile.tar: file is the archive; not dumped
./myfile.xml

tmp# tar -tvf myfile.tar
./
./myfile.xml

tmp# gzip myfile.tar
tmp# mv myfile.tar.gz myfile.tgz

Please find attached a file that was created in this way.
As GitHub does not support that file type, I had to zip it in addition.
myfile.tgz.zip

[wapmorgan]

Ok, will see in few hours.

[wapmorgan]

This is phar extension related problem: https://bugs.php.net/bug.php?id=71966
Reported this case, will wait for response.