thinkPHP+ajax实现统计页面pv浏览量的方法

<script>
var ajax;
if(window.XMLHttpRequest){ ajax = new XMLHttpRequest();}else{ ajax = new ActiveXObject('Microsoft.XMLHTTP');}
ajax.open('GET','__MODULE__/Article/set_hits/id/{$_GET['id']}',true);
ajax.send();
</script>

// ajax设置点击量
public function set_hits(){
  if(!$_GET['id']){return;}
  M('article')->where("id = '{$_GET['id']}'")->setInc('hits');
}