6 Working with *large objects* requires an active transaction.
11 0, representing an invalid OID.
12 * <span class="constant">R</span>
14 * <span class="constant">W</span>
21 * public (readonly) pq\Transaction $transaction
22 The transaction wrapping the operations on the *large object*.
23 * public (readonly) int $oid
24 The OID of the *large object*.
25 * public (readonly) resource $stream
26 The stream connected to the *large object*.