TP框架上传附件

以下是上传附件的格式方法：

public function upload() {
		$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 = './Public/';
		$upload -> savePath = './wenjian/';
		// 设置附件上传目录

		//	    // 上传文件
		$a = $upload -> upload();

		$hname = $_POST["hname"];
		$hcontent = $_POST["hcontent"];
		$htupian = "/wenjian/" . date("Y-m-d", time()) . "/{$a["photo"]["savename"]}";

		$daihao = $_POST["daihao"];
		$daihao = substr($daihao, 18, 4);

		$n = D("huiyishi");
		$n -> zhuangtai = "已占用";
		$n -> where("daihao='{$daihao}'") -> save();
		$gongsi = $_POST["gongsi"];
		$feiyong = $_POST["feiyong"];
		$jtime = $_POST["jtime"];
		$ktime = $_POST["ktime"];
		$wtime = $_POST["wtime"];
		$uid = session("uid");
		$hwhere = $_POST["hwhere"];
		$people = $_POST["people"];
		$n = D("huiyi");
		$arr = array("ids" => "0", "uid" => "$uid", "hname" => "{$hname}", "hcontent" => "{$hcontent}", "htupian" => "{$htupian}", "hid" => "{$daihao}", "gongsi" => "{$gongsi}", "ktime" => "{$ktime}", "jtime" => "{$wtime}", "hwhere" => "{$hwhere}", "people" => "{$people}", "btime" => "{$jtime}", "zhuangtai" => "开始会议", "feiyong" => "{$feiyong}");
		if ($n -> add($arr)) {
			$this -> success("发布成功", U("xianshi"));
		} else {
			$this -> error("发布失败");
		}
	}