PHP里的sql有关问题

<br />//查询<br />	$sql="SELECT * FROM `rv_duifu` where 1=1 $search order by id desc LIMIT $pageNum,$numPerPage";<br />	$db->query($sql);<br />	$list=$db->fetchAll();<br />	<br />	//echo $sql;<br />	//格式化输出数据<br />	foreach($list as $key=>$val){<br />		if($key%2==0){<br />			$list[$key][rowcss]="listOdd";<br />		}else{<br />			$list[$key][rowcss]="listEven";<br />		}<br />		$sql_lc="select * from `rv_licai` where id='".$list[$key][licaiid]."' limit 1";<br />		$db->query($sql_lc);<br />		$row_lc=$db->fetchRow();<br />		$list[$key][name_txt]=$row_lc['name'];<br />		$list[$key][qixian_txt]=$row_lc['qixian'];<br />		$list[$key][bdate_txt]=$row_lc['bdate'];<br />		$list[$key][ldate_txt]=$row_lc['ldate'];<br />		$list[$key][jine_txt]=$row_lc['jine'];<br />	}<br /><br />	//模版<br />	$smt = new smarty();smarty_cfg($smt);<br />	$smt->assign('list',$list);<br />	$smt->assign('numPerPage',$_POST[numPerPage]); //显示条数<br />	$smt->assign('pageNum',$_POST[pageNum]); //当前页数<br />	$smt->assign('total',$total);<br />	$smt->assign('title',"列表");<br />	$smt->display('duifu_list.htm');<br />