1.从数据库中取6个值,这些值中的字段可以随意调出。
<!--{eval $threads = DB::fetch_all("SELECT * FROM `pre_forum_thread` ORDER BY dateline DESC LIMIT 0,6"); }-->
可以使用loop语句输出这些由字段组成的值。
<!--{loop $threads $value}--> <p class="news"> <em>{echo date('d日',$value[dateline])} | </em> <a href="t$value[tid].html">$value[subject]</a> </p> <!--{/loop}-->
2.增加筛选条件:取pre_portal_article_title表中 catid 介于50到59之间,或66到74之间的值,然后按照时间倒序排列。
<!--{eval $app = DB::fetch_all("SELECT * FROM `pre_portal_article_title` WHERE catid BETWEEN 50 AND 59 OR catid BETWEEN 66 AND 74 ORDER BY dateline DESC LIMIT 0,9"); }-->
3.另一种数据库查询方法:通过这种查询获得的变量可以在其作用范围内直接使用。
<!--{eval $usernum = DB::result_first("SELECT count(*) FROM ".DB::table('common_member')); $onlinenum = DB::result_first("SELECT count(*) FROM ".DB::table('common_session')); $todayposts = DB::result_first("SELECT sum(todayposts) FROM ".DB::table('forum_forum')." WHERE status=3"); $yesterdayposts = DB::result_first("SELECT sum(yesterdayposts) FROM ".DB::table('forum_forum')." WHERE status=3"); $threads = DB::result_first("SELECT sum(threads) FROM ".DB::table('forum_forum')." WHERE status=3");$posts = DB::result_first("SELECT sum(posts) FROM ".DB::table('forum_forum')." WHERE status=3"); $groups = DB::result_first("SELECT count(*) FROM ".DB::table('forum_forum')." WHERE type='sub'"); $record = DB::result_first("SELECT svalue FROM ".DB::table('common_setting')." WHERE skey='onlinerecord'"); $maxrecord = explode(" ",$record);}-->