ajax json 数组

 //添加友情链接
    public function addlink() {
        $sub_subsort = $this->db->getsubsortlist();//三级联动
        $arr=array('0'=>array("id"=>"0","sortname"=>"site","sorttruename"=>"首页"));
        $sub_subsort=array_merge($arr,$sub_subsort);
        if($_POST['act']=="action"){
           $id=$_POST['id'];
           if($id){
                 $date['pID']="$id";
                 $arr=array('0'=>array("id"=>"0","sorttruename"=>"--请选择小分类--"));
                 $row=$this->db->getsubsortlist($date['pID']);
                 $row2=$this->db->getsubsort2list($date['pID']);
                 $row=array_merge($arr,$row);
                // var_dump($row); exit
                 //var_dump($sel);exit();
                 $html = '';
                 foreach ($row as $v) {
                    $html .= "<option value='$v[id]' >$v[sorttruename]</option>\n";
                   // $html2=$v['sortname'];
                   }
                    $list=array();
                    $list['s1']=$html;
                    $list['s2']=$row2[0]['sortname'].".28.com";
                    echo json_encode($list);
                    exit();
                  
           
        }
       
      }