Tar.Gz option is not working....

Used this backup system.
But zip format is ok, tar.gz format is not ok.
When backup in tar option, than only backup tar format not tar.gz
Please re-check it.

In order to use TAR GZ want to write this:

$ya = new YandexBackup('[email protected]', 'test');

$ya->setName('My Backup');
$ya->setType(YandexBackup::TAR);
$ya->setCompression(true);

$ya->db('user', 'password', 'db');
$ya->folder('/var/www/public_html/');

$ya->backup();

Hello,
It's work.
But loading time many long, and show 30/60 seconds execution error sometime.
put this code $ya->setCompression(true);
Local server backup successfully, but webdav server no backup.

Please help me or solution.

Thanks

Let me know please.

$ya = new YandexBackup('[email protected]', 'test');
$ya->setName('My Backup');
$ya->setType(YandexBackup::TAR);
$ya->setCompression(true);
$ya->db('user', 'password', 'db');
$ya->folder('/var/www/public_html/');
$ya->backup();

But when i add this line $ya->setCompression(true)
no backup files in my local server and web server.

Please, is it correct code or what's my fault? let me know