thinkphp上传

// 缩略图上传
            $upload = new \Think\Upload();// 实例化上传类
            $upload->maxSize   =     3145728 ;// 设置附件上传大小
            $upload->exts      =     array(‘jpg‘, ‘gif‘, ‘png‘, ‘jpeg‘);// 设置附件上传类型
            $upload->rootPath  =     ‘./Upload/‘; // 设置附件上传根目录
            $upload->savePath  =     ‘images/‘; // 设置附件上传（子）目录
            $upload->subName   =     array(‘date‘, ‘Ym‘);
            // 上传文件  
            $info   =   $upload->upload();
            if(!$info) {// 上传错误提示错误信息
                $this->error($upload->getError());
                return false;
            }
            $goods_thumb =  $info[‘upload‘][‘savepath‘].$info[‘upload‘][‘savename‘];