To use the large object interface, it is necessary to enclose it within a transaction block.
This function used to be called pg_loclose().
PostgreSQL large object (LOB) resource, returned by pg_lo_open().
$database = pg_connect("dbname=jacarta");
$oid = pg_lo_create($database);
$handle = pg_lo_open($database, $oid, "w");
pg_lo_write($handle, "large object data");