thinkphp一键清除缓存的方法

后台控制器：

<?php

namespace Home\Controller;

use Think\Controller;

class HuancuController extends Controller{

                private function _deleteDir($R){

                $handle = opendir($R);

                while(($item = readdir($handle)) !== false){

                if($item != '.' and $item != '..'){

                if(is_dir($R.'/'.$item)){

                $this->_deleteDir($R.'/'.$item);

                }else{

                if(!unlink($R.'/'.$item))

                die('error!');

                }

                }

                }

                closedir( $handle );

                return rmdir($R);

                }

                public function clearRuntime(){

                if($_POST['user']==1){

                        if($this->_deleteDir("./Runtime/")){

                            $this->ajaxReturn(1);

                        }

                }

                }

        

}

前台代码 ajax请求：

<script type="text/javascript">

    function zp(){

        $.ajax({

            type: "POST",

            url:"{:U('Huancu/clearRuntime')}",

            data:{user:1},

            success:function(r){

             if(r==1){

                 alert('清除成功！');

             }

            }

        })

    }

</script>