private const TRANSACTION_STATUS = [ \PGSQL_TRANSACTION_IDLE => 'PGSQL_TRANSACTION_IDLE', \PGSQL_TRANSACTION_ACTIVE => 'PGSQL_TRANSACTION_ACTIVE', \PGSQL_TRANSACTION_INTRANS => 'PGSQL_TRANSACTION_INTRANS', \PGSQL_TRANSACTION_INERROR => 'PGSQL_TRANSACTION_INERROR', \PGSQL_TRANSACTION_UNKNOWN => 'PGSQL_TRANSACTION_UNKNOWN', ];