fbsql_affected_rows()
(PHP 4 >= 4.0.6, PHP 5, PHP 7)
Get number of affected rows in previous FrontBase operation
说明
fbsql_affected_rows([resource $link_identifier]): int
fbsql_affected_rows() returns the number of rows affected by the last INSERT, UPDATE or DELETE query associated with$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
由fbsql_connect()或fbsql_pconnect()返回的 FrontBase 链接标识符.
如可选并未指定,函数会尝试查找一个到 FrontBase 服务器的开放链接,且如没有找到这样的链接,会尝试通过不带参数调用fbsql_connect()来创建一个。
返回值
If the last query failed, this function will return -1.
参见
fbsql_num_rows()
Get number of rows in result