fbsql_affected_rows() returns the
number of rows affected by the last INSERT, UPDATE or DELETE
query associated with
link_identifier. If the link identifier isn't
specified, the last link opened by
fbsql_connect() is assumed.
注: If you are using transactions, you need to call fbsql_affected_rows() after your INSERT, UPDATE, or DELETE query, not after the commit.
If the last query was a DELETE query with no WHERE
clause, all of the records will have been deleted from the
table but this function will return zero.
注: When using UPDATE, FrontBase will not update columns where the new value is the same as the old value. This creates the possibility that fbsql_affected_rows() may not actually equal the number of rows matched, only the number of rows that were literally affected by the query.
If the last query failed, this function will return
-1.
See also: fbsql_num_rows().