(PHP 5)
sqlite_has_prev -- SQLiteResult->hasPrev — Returns whether or not a previous row is available
Object oriented style (method):
Find whether there are more previous rows from the given result handle.
The SQLite result resource. This parameter is not required when using the object-oriented method.
Note: 本函数不能用于未缓冲的结果句柄。
Returns TRUE if there are more previous rows available from the result handle, or FALSE otherwise.