easyui-datagrid 加载数据 的两种方法

var start_date_entered=$('#start_date_entered').val(); //创建时间
var stop_date_entered=$('#stop_date_entered').val();

var callerid=$('#select_callerid').val();
var called=$('#select_called').val();
//查询条件
var query={ 'start_date_entered':start_date_entered,'stop_date_entered':stop_date_entered ,'callerid':callerid,'called':called   }; 

//方法一
var url='Api-index.php?module=<{$module_name}>&action=Api_GridView_Select<{$get_current_user}>' ;  //alert(url);
$('#grid').datagrid('options').url=url ;
$('#grid').datagrid('options').queryParams=query;
$('#grid').datagrid('reload');    

//方法二
$.ajax({
    type: "POST", //POST和GET
    async: false,
    url: 'Api-index.php?module=<{$module_name}>&action=Api_GridView_Select<{$get_current_user}>',    //提交url 注意url必须小写
    data: query,  // { "SearchContent": query, "pageSize": pageSize, "pageIndex": curr }
    success: function (result) {
        var data = $.parseJSON(result);//转为 Json对象
        $('#grid').datagrid('loadData', data); 

　　　　　alert(data.total);//总行数
    }
});  

//php 提交页
$table_name="ast_cdr";
$arr_result = array(); //返回值
$where='';//查询条件
//日期条件
$where=" and StartTime >='{$_POST['start_date_entered']}' and StartTime <='{$_POST['stop_date_entered']}' ";
//其它条件
if($_POST['callerid']!=''){
  $where .=" and CallerId = '{$_POST['callerid']}' ";
}
if($_POST['called']!=''){
  $where .=" and Called = '{$_POST['called']}' ";
}

//分页
$page = isset($_POST['page']) ? intval($_POST['page']) : 1;
$rows = isset($_POST['rows']) ? intval($_POST['rows']) : 10;
$offset = ($page-1)* $rows;   

$sql ="SELECT COUNT(id) AS total FROM {$table_name} where 1=1 " . $where ;   //WriteLog($sql);
$arr_result['total'] =$db->query_count($sql);//总行数
//WriteLog($result['total'].'-----' );  

//结果集
$items = array();

$order_by=" order by StartTime desc ";/
$sql = "select * from {$table_name} where 1=1 ".$where .$order_by." limit $offset,$rows ";
//WriteLog($sql);  

//导出

if($_GET['target']=="ToExcel" || $_GET['target']=="Print" ){
  $arr_result['where'] = $where;      //将条件 传出
  $arr_result['order_by'] = $order_by;      //将条件 传出
  //WriteLog($where);
  //WriteLog($order_by);
  echo json_encode($arr_result);
  exit(0);
}

$result_rows=$db->query($sql);
while($row=$db->fetch_array($result_rows))
{
    $select_title="放音";//iconv('GB2312','UTF-8','选择');
    $row['select']='<a href="#"  style="text-decoration:none;" onclick="javascript:Play_Record(\''. $row['UniqueId']. '\');"> ' . $select_title . ' </a>';
    array_push($items, $row);
}  
$arr_result['rows'] = $items;     
 
echo json_encode($arr_result);