php中ajax

lei_1021

function postdata(){var params = "";params += "&terminal=" +  document.getElementById('terminal').value;  $.ajax({type: 'POST',url: 'bing.php',data: params,success: function(data){var result;
eval("result=" + data + ";");
alert(result.message);
   }
   });
}

<?php
define('IN_ECS', true);
define('INIT_NO_USERS', true);
define('INIT_NO_SMARTY', true);

require(dirname(__FILE__) . '/includes/init.php');
require(ROOT_PATH . 'includes/cls_json.php');
$username ='123';
$terminal =$_REQUEST['terminal'];
      

if ((DEBUG_MODE & 2) != 2)
{
    $smarty->caching = true;
}

$countsql = "select * from ecs_users where terminal_id='$terminal'";
$res = $GLOBALS['db']->getAll($countsql);
$arr['message']='';
if(count($res)==0)
{
$sql="update ecs_users  set terminal_id='$terminal' where user_name='$username'";
$GLOBALS['db']->query($sql);
$arr['message']='绑定成功!';
}else
{
$arr['message']='阅读器已经绑定!';
}
$json = new JSON;
echo $json->encode($arr);
?>