about the PHP linked server error

Hello, When I use php to invoke linked server configured in MS-SQL 2005, there is an error like this: "Exception: ../application/models/TestDatabase.php -> TestDatabase -> testListNewDefect -> Unexpected exception of type [Zend_Db_Statement_Exception] with message [SQLSTATE[HY000]: General error: 10007 Heterogeneous queries require the ANSI_NULLS and ANSI_WARNINGS options to be set for the connection. This ensures consistent query semantics. Enable these options and then reissue your query. [10007] (severity 5) [(null)]] in [C:\ZendFramework-1.0.3\library\Zend\Db\Statement\Pdo.php line 227]" I think this error is caused by PHP but not zend framework, please give me some help. Thank you. _________________________________________________________________ MSN 中文网，最新时尚生活资讯，白领聚集门户。 http://cn.msn.com