XDCMS 3.0 数据库备份任意文件夹删除¶

public function delete(){
        $file=trim($_GET["file"]);
        $dir=DATA_PATH.'backup/'.$file;
        if(is_dir($dir)){
            //删除文件夹中的文件
            if (false != ($handle = opendir ( $dir ))) {  
                while ( false !== ($file = readdir ( $handle )) ) {   
                    if ($file != "." && $file != ".."&&strpos($file,".")) {  
                        @unlink($dir."/".$file);    
                    }  
                }  
                closedir ( $handle );  
            }  

            @rmdir($dir);//删除目录
        }
        showmsg(C('success'),'-1');
    }