Yii::import('ext.yii-database-dumper.SDatabaseDumper');
  $dumper = new SDatabaseDumper;
  // Get path to backup file
  $file = Yii::getPathOfAlias('webroot.protected.backups').DIRECTORY_SEPARATOR.'dump_'.date('Y-m-d_H_i_s').'.sql';

  // Gzip dump
  if(function_exists('gzencode'))
      file_put_contents($file.'.gz', gzencode($dumper->getDump()));
  else
      file_put_contents($file, $dumper->getDump());