TP上传图片

    //更新       更新中的话，一定要写那一个if判断
    public function update(){
        $model = M('link');

        $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';    //根下面的public
        $upload->savePath  =      '/uploads/'; // 设置附件上传目录
        $upload->saveName  =    ['uniqid','pic'];//设置保存前缀
        $upload->subName   =    ['date','Y/m/d'];  //以日期方式保存

        //上传文件 并 返回信息
        $info   =   $upload->upload();

        if($info){     //更新的话，一定要写这个判断
            //遍历信息 取得路径和文件名
            foreach($info as $file){
                $img = 'Public'.$file['savepath'].$file['savename'];
            }
            //把文件名存到POST中 方便create使用
            $_POST['picname'] = $img;
        }

        if($model->create()){
            $model->save();
            $this->success('更新成功',U("Link/select"));
        }else{
            $this->error('更新失败',U("Link/select"));
        }
    }
    

2.添加。。。。

    //保存添加的内容
    public function insert(){
        $model = M('link');

         $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';  //根
         $upload->savePath  =      '/uploads/'; // 设置附件上传目录
         $upload->subName  = ['date','Y/m/d'];  //以日期方式创建文件夹 保存图片
         $upload->saveName  =    ['uniqid','pic'];//设置保存前缀

         $info   =   $upload->upload();   // 上传文件
//         array (size=1)
//  'picname' =>
//    array (size=9)
//      'name' => string 'Meinv002.jpg' (length=12)
//      'type' => string 'image/jpeg' (length=10)
//      'size' => int 557301
//      'key' => string 'picname' (length=7)
//      'ext' => string 'jpg' (length=3)
//      'md5' => string '6807fdb5a7d40d72374f0049c46fb70d' (length=32)
//      'sha1' => string '8f9b545211b2dfa49957cf3e0e8f5e8cd68a734e' (length=40)
//      'savename' => string 'pic55c74c898d07d.jpg' (length=20)
//      'savepath' => string '/uploads/2015/08/09/' (length=20
//        dump($upload);
//       echo '<hr />';
//        dump($info);
//        die();

        foreach($info as $file){
            $img = 'Public'.$file['savepath'].$file['savename'];
        }

        $_POST['picname'] = $img;  //名字传给他

        if($model->create()){
            $model->addtime = time();
            $model->add();
            $this->success('添加成功',U("Link/select"));
        }else{
            $this->error('提交失败',U("Link/select"));
        }
    }

三、表单中

<form role="form" action='__URL__/insert' method='POST' enctype="multipart/form-data">

            <div class="form-group">
                <label>添加图片</label>
                <input type="file" name="picname">
            </div>