文件上传 多文件

`控制器
 yii\web\UploadedFile;
 $model->file = UploadedFile::getInstances($model, 'file');
        $file_arr = array();
        foreach($model -> file as $file){
            $file_name = 'uploads/' . time() . rand(111111,999999).'.'. $file->extension;
            $file -> saveAs($file_name);
            $file_arr[] = $file_name;
        }
 视图:
<?php
 use yii\widgets\ActiveForm;
 use yii\helpers\Html;
?>
 <?php $form=ActiveForm::begin(['options'=>['enctype'=>'multipart/form-data'],'action'=>   ['news/upfile'],'method'=>'post',])?>
 <?=$form->field($model,'file[]')->fileInput(['multiple'=>true])?>
 <?php echo Html::submitButton('提交',['class' => 'btn btn-primary'])?>
<?php ActiveForm::end();?>

`

@林小陌 public function actionSoso(){

    $model = new Fuxi();
    $uname = $_GET['uname'];
    $content = $_GET['content'];
    $where = '1=1';
    if(!empty($uname)){
        $where.=" and uname like '%".$uname."%'";
    }
    if(!empty($content)){
        $where.=" and content like '%".$content."%'";
    }

    $pagination = new Pagination([
            'defaultPageSize' => 5,
            'totalCount' => $model->find()->count(),
            ]);

    $list = $model->find()
                ->offset($pagination->offset)
                ->limit($pagination->limit)
                ->where($where)
                ->asArray()->all();
                //print_r($list);die;
    return $this->render('show',['list'=>$list,'pagination'=>$pagination,'uname'=>$uname,'content'=>$content]);
}
public function actionXiazai(){
    print_r($_SERVER);die;
    $url = 'http://localhost/Yii/yii/advanced/frontend/web/index.php?r=hello/show';
    $list = file_get_contents($url);
    $filename = rand(0,100).".doc";
    $myfile = fopen($filename, "w");
    fwrite($myfile, $list);
    $this->redirect("http://localhost/Yii/yii/advanced/frontend/web/".$filename); 
}

@林小陌 public function actionAdd(){

    $model = new Fuxi();
    $db = Yii::$app->db;
    if (Yii::$app->request->isPost) {
        $files = $model->file = UploadedFile::getInstances($model, 'file');
            foreach($files as $val){
                $list = $val->saveAs('../web/uploads/' . $val->baseName . '.' . $val->extension);
            } 
        if($list==1){
            foreach($files as $v){
                $img = $v->name;
            } 
            $res = $db->createCommand()->batchInsert('fuxi',['uname','content','file'],[[$_POST['Fuxi']['uname'],$_POST['Fuxi']['content'],$img]])->execute();    
            if($res==1){
                $this->redirect(array('hello/show'));
            }    
        }else{
            echo '上传失败';
        } 
       
    }
}