fbsql_affected_rows
(PHP 4 >= 4.0.6, PHP 5)
fbsql_affected_rows — Get number of affected rows in previous FrontBase operation
说明
int fbsql_affected_rows
([ resource $link_identifier
] )
fbsql_affected_rows() returns the number
of rows affected by the last INSERT, UPDATE or DELETE query
associated with link_identifier
.
Note:
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.
Note:
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.
参数
-
link_identifier
-
A FrontBase link identifier
returned by fbsql_connect() or
fbsql_pconnect().
If optional and not specified,
the function will try to find an open link to the FrontBase server and if no
such link is found it will try to create one as if
fbsql_connect() was called with no arguments
返回值
If the last query failed, this function will return -1.