Jquery和PHP Ajax JSON

 $.ajax({
    type: "GET",
    url: "index.php",
    cache: false,
    data: "con=Add&act=_search&key=" + key+"&id="+id,
    dataType:"json",
    success: function(msg){
    bindGroupList(msg);
    }
 });
//绑定
 function bindGroupList(result)
 {
    var eles = document.forms['theForm'].elements;
    eles['group_id'].length = 1;
    for (i = 0; i < result.content.length; i++)
    {
      var opt = document.createElement('OPTION');
      opt.value = result.content[i].id;
      opt.text  = result.content[i].name;
      eles['group_id'].options.add(opt);
    }
 }

 $.getJSON("?con=Add&act=_search&key=" + key+"&id="+id, function(data){
     //bindGroupList(data)
 });
append  * @return  void  */ function make_json_response(content = '', error = "0", message = '', append = array()) {  append)) {   foreach (append AS key => val) {    res[key] = val;   }  }  val = json_encode(res);
 exit($val);
 }
/**  *  *  * @access  public  * @param  * @return  void  */ function make_json_result(content, message = '', append = array()) {  make_json_response(content, 0, message, 
return  make_json_result($list);