pg_affected_rows returns the number of tuples (instances/records/rows) affected by INSERT, UPDATE, and DELETE queries.
Since PostgreSQL 9.0 and above, the server returns the number of SELECTed rows. Older PostgreSQL return 0 for SELECT.
This function used to be called pg_cmdtuples.
An PgSql\Result instance, returned by pg_query, pg_query_params or pg_execute(among others).
The number of rows affected by the query. If no tuple is affected, it will return 0.
|8.1.0||The result parameter expects an PgSql\Result instance now; previously, a resource was expected.|