pg_num_rows Returns the number of rows intpg_num_rows resourceresult pg_num_rows will return the number of rows in a PostgreSQL result resource. result is a query result resource returned by pg_query. This function will return -1 on error. Use pg_affected_rows to get number of rows affected by INSERT, UPDATE and DELETE query. This function used to be called pg_numrows(). See also pg_num_fields and pg_affected_rows.