方法一:(适用于栏目非常多的情况下,效率比较好)
<?phpfunction IslastClassid(){ global $class_r; foreach ($class_r as $k => $v) { if ($v['islast'] == 1) { $all[]= $v['classid'];}} $rand_key = array_rand($all , 5);//随机取5个 foreach ($rand_key as $k => $v) { $classall.= $v.',';} $classall = trim($classall , ','); $classall = $classall ?$classall : 0 ;return$classall;} $class_sql=$empire->query('select * from '.$dbtbpre.'enewsclass where classid in ('.IslastClassid().') order by myorder'); while($class_row=$empire->fetch($class_sql)){$classurl=sys_ReturnBqClassUrl($class_r[$class_row['classid']]);//栏目链接地址 ?><li><a href="<?=$classurl?>"><?=$class_row['classname']?></a></li><?}?>
方法二:(栏目不多的情况下可以使用)
<?php $class_sql=$empire->query('select * from '.$dbtbpre.'enewsclass where islast=1 order by RAND() LIMIT 5'); while($class_row=$empire->fetch($class_sql)){ $classurl=sys_ReturnBqClassUrl($class_r[$class_row['classid']]); //栏目链接地址 ?> <li><a href="<?=$classurl?>"><?=$class_row['classname']?></a></li> <? } ?>