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

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/**      * @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() );         }     }