After two years, I ended up needing to use tube.php again and discovered that PHP 7 had introduced changes which broke version 1 of tube.php which was developed for PHP 5. I just finished fixing tube.php and it is now compatible with PHP 7! If you happen to stumble upon this project and wish to use it, make sure to use v2 of tube.php as v1 no longer works with the most recent releases of PHP.