http://www.sitepoint.com/forums/showthread.php?645467-Retreiving-the-previous-and-next-row-through-PDO&p=4425809&viewfull=1#post4425809

SELECT
i.images_id
,COALESCE(
(SELECT images.images_id FROM images WHERE images.images_id < i.images_id ORDER BY images.images_id DESC LIMIT 1),
(SELECT images.images_id FROM images ORDER BY images.images_id DESC LIMIT 1)
) AS previous_images_id
,COALESCE(
(SELECT images.images_id FROM images WHERE images.images_id > i.images_id ORDER BY images.images_id ASC LIMIT 1),
(SELECT images.images_id FROM images ORDER BY images.images_id ASC LIMIT 1)
) AS next_images_id
FROM
images i
WHERE
i.images_id = 1

  


\==========  
for record, not for page  
  
1、 get all new\_id in array  (PDO fetchAll(PDO::FETCH\_ASSOC) )  
  

> $all\_news\_ids = $crud->sql("select news\_id from news");

  
  
2、get $now\_news\_id key for array  
  

> $now\_news\_id\_key\_id = array\_search(array('news\_id'=>$now\_news\_id), $ar\_all\_news\_ids);

  
  
3、check $now\_news\_id\_key\_id first, if empty  
  

> $prive\_news\_id = empty($now\_news\_id\_key\_id)?"":get\_record\_column('news\_id', $all\_news\_ids, $now\_news\_id\_key\_id+1);  
> $next\_news\_id = empty($now\_news\_id\_key\_id)?"":get\_record\_column('news\_id', $all\_news\_ids, $now\_news\_id\_key\_id-1);

  
  
  

> function get\_array\_column($val, $ar){  
> return array\_key\_exists($val, $ar)?$ar\[$val\]:"";  
>   }

  

> function get\_record\_column($val, $ar, $rec\_arrow=0){  
> return (isset($ar\[$rec\_arrow\]))?get\_array\_column($val, $ar\[$rec\_arrow\]) : "";  
>   }