tests in ubuntu 16.04 fails

Environment: Ubuntu 16.04

php -v result:

PHP 7.0.4-7ubuntu2.1 (cli) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies
with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies

The example.php itself creates corrupted files.
One minimal test that lists the content of a rar works fine.
Other test to extract the same rar as above creates corrupted files.

Not using composer.
Changed "require_once 'vendor/autoload.php';"
TO: "require_once 'RarArchiver.php';"

I can confirm this problem.
I have tested it with PHP 7.2.3 locally using WampServer & PHP 7.2.8 using CentOS 7 live/server with the same issue.

It does not unpack archives properly as the files become corrupt.

I have been able to get it to compress files properly although it requires writing/using a script to first create a temp folder with all the needed files copied to it. I may include this change/addition on GitHub for other people.

I will mess around with the source code to see if I can get it to function. I'm not positive but to me it looks like it is not writing the files as binary. I will post back if I figure out a fix.