(PHP 5 < 5.4.0)
sqlite_prev -- SQLiteResult::prev — Seek to the previous row number of a result set
$result
   ) : bool面向对象风格 (method):
   sqlite_prev() seeks back the 
   result handle to the previous row.
  
resultThe SQLite result resource. This parameter is not required when using the object-oriented method.
Note:
此函数不能用于未缓冲的结果句柄。
   Returns TRUE on success, or FALSE if there are no more previous rows.