fbsql_set_lob_mode
(PHP 4 >= 4.2.0, PHP 5)
fbsql_set_lob_mode — Set the LOB retrieve mode for a FrontBase result set
说明
bool fbsql_set_lob_mode
( resource $result
, int $lob_mode
)
Sets the mode for retrieving LOB data from the database.
When BLOB and CLOB data is retrieved in FrontBase it can be retrieved
direct or indirect. Direct retrieved LOB data will always be fetched no
matter the setting of the lob mode. If the LOB data is less than 512 bytes
it will always be retrieved directly.
参数
-
result
-
A result identifier
returned by fbsql_query() or
fbsql_db_query().
-
lob_mode
-
Can be one of:
-
FBSQL_LOB_DIRECT - LOB data is retrieved
directly. When data is fetched from the database with
fbsql_fetch_row(), and other fetch functions,
all CLOB and BLOB columns will be returned as ordinary columns.
This is the default value on a new FrontBase result.
-
FBSQL_LOB_HANDLE - LOB data is retrieved as
handles to the data. When data is fetched from the database with
fbsql_fetch_row(), and other fetch functions,
LOB data will be returned as a handle to the data if the data is
stored indirect or the data if it is stored direct. If a handle
is returned it will be a 27 byte string formatted as
@'000000000000000000000000'.
返回值
如果成功则返回 TRUE，失败则返回 FALSE。