php部分：function build_select($array,$select='',$showAll=0){    $tmp = array();    if($showAll == 1){        $tmp[] = "不限";    }elseif($showAll == 2){        $tmp[] = "选择";    }    foreach ((array)$array as $key => $val) {        if($select == $key){            $tmp[] = "{
    $val}";        }else{            $tmp[] = "{
    $val}";        }    }    return implode("", $tmp);}public function index（）{    $cid = intval(I('get.classid'));    $map = array();    $arrList = D("School")->where($map)->order("orderval ASC")->getField("id,name");    $select = funs_build_select($arrList,$cid,1);    $this->assign('selectClass', $select);}html部分：    {
   $select}复制代码