下拉选择

效果如下

前端代码如下：

<select name="bid">
	 <option value="0">请选择品牌</option>
		<volist name="plist" id="vo">
		<option value="{$vo['id']}" <if condition="$vo['id'] eq $pid">selected</if>>  {$vo["br_name"]}
	</option>
		</volist>
</select>

---

其中 <if condition="$vo['id'] eq $pid">selected</if>这一句效果何在？？

以下是volist标签中的数据读取

public function productadd(){
	$cid=I("get.cid");
	$pid=I("get.pid");
	if (!is_numeric($cid)){$cid=0;}
	if (!is_numeric($pid)){$pid=0;}
	***$plist=$this->brand_arr();***
	$clist=$this->chanel();
	$maxsort=M("odee_product")->field("pr_sort")->order("pr_sort desc")->find();
	if (!$maxsort){
	   $pr_sort=1;
	}else{
		$pr_sort=$maxsort['pr_sort']+1;
	}
	$this->assign(array("pid"=>$pid,"cid"=>$cid,"plist"=>$plist,"clist"=>$clist,"pr_sort"=>$pr_sort));
	$this->display();
}


public function brand_arr(){
	$list=M("odee_brand")->field(true)->order("br_sort")->select();
	return $list;
}