pq\Transaction pq\Connection::startTransactionAsync([int $isolation = pq\Transaction::READ_COMMITTED[, bool $readonly = FALSE[, bool $deferrable = FALSE]]])

Asynchronously begin a transaction.

Params:

NOTE:
A transaction can only be deferrable if it also is readonly and serializable.
See the official PostgreSQL documentaion for further information.

Returns:

Throws: