SS7解决上一篇下一篇的问题终极版

以下为引用的内容：
$title_a = $_SGLOBAL['db']->result($_SGLOBAL['db']->query('SELECT subject FROM '.tname('spaceitems').' WHERE itemid < ''.$itemid.'' AND catid = ''.$thecat['catid'].'' AND folder='1' AND type='news' ORDER BY itemid DESC LIMIT 0,1'), 0);
if(!$title_a) $title_a = '';

$title_b = $_SGLOBAL['db']->result($_SGLOBAL['db']->query('SELECT subject FROM '.tname('spaceitems').' WHERE itemid > ''.$itemid.'' AND catid = ''.$thecat['catid'].'' AND folder='1' AND type='news' ORDER BY itemid LIMIT 0,1'), 0);
if(!$title_b) $title_b = '';