Question

thinkphp上传图片预览并且保存到数据库，求一个代码例子！谢谢！！

Answer 1

	/**
	 * @desc   保存新增广告
	 */
	public function saveAdd(){
		$userInfo = $this->getUserInfo();
		if(!$userInfo['id'] || $userInfo['id'] == 0){
			$this->error('请重新登陆添加广告');
			exit;
		
		}
		$_POST['user_id'] = $userInfo['id'];

        if($_POST['areaType'] == 'all') unset($_POST['area']);
        if( $_POST['areaType'] == 'custom' && (count($_POST['area']) == 34 || $_POST['area'] == '') ) unset($_POST['area']);

        $id = null;

        if($_POST['uploadType'] == 'single'){
            /*$picInfo = getimagesize($_POST['pic']);
            $sizeInfo = D('AdSizeConfig')->getDataById($_POST['size_id']);

            if(($sizeInfo['width'] != $picInfo[0]) || $sizeInfo['height'] != $picInfo[1]){
                $this->error('您上传的图片长或宽不正确！');
            }*/

            $id = D($this->className)->addData($_POST);
        }

        if($_POST['uploadType'] == 'multi'){
            foreach($_POST['picArr'] as $key => $val){
                $data[$key] = $_POST;
                $data[$key]['pic'] = $val;
                $picInfo = getimagesize("./" . $val);
                $map['width'] = $picInfo[0];
                $map['height'] = $picInfo[1];

                $data[$key]['size_id'] = D('AdSizeConfig')->where($map)->getField('id');

                $id = D($this->className)->addData($data[$key]);
            }
        }

        if($id){
        	//添加广告积分,获取展示时间，获取展示区域
        	$diff_time_start = strtotime($_POST['start_date']);
        	$diff_time_end = strtotime($_POST['end_date']);
			$diff_days = floor(($diff_time_end -$diff_time_start)/86400) +1;
			$area_ratio = ($_POST['areaType'] == 'all') ? 5 : 1;
			$uid = $userInfo['id'];
			//$method = 'ad_saveadd';
			//$points = -intval($diff_days) * $area_ratio;
			//$desc = '这么多'.$points.'分数';
			//D('ScoreHistory')->setScoreByRule($method,'',$uid,'');
            $this->userAddScore();
            $this->success('添加成功！','/Home/Ad/index');
        }else{
            $this->error( D($this->className)->getLastError() );
        }
	}