Connection::__destruct

public Connection::__destruct()

public function __destruct() {
  if ($this->tableDropped && !empty($this->attachedDatabases)) {
    foreach ($this->attachedDatabases as $prefix) {
      // Check if the database is now empty, ignore the internal SQLite tables.
      try {
        $count = $this->query('SELECT COUNT(*) FROM ' . $prefix . '.sqlite_master WHERE type = :type AND name NOT LIKE :pattern', array(':type' => 'table', ':pattern' => 'sqlite_%'))->fetchField();

        // We can prune the database file if it doesn't have any tables.
        if ($count == 0) {
          // Detaching the database fails at this point, but no other queries
          // are executed after the connection is destructed so we can simply
          // remove the database file.
          unlink($this->connectionOptions['database'] . '-' . $prefix);
        }
      }
      catch (\Exception $e) {
        // Ignore the exception and continue. There is nothing we can do here
        // to report the error or fail safe.
      }
    }
  }
}