Yii2.0多文件上传实例说明

<?php 
namespace frontend\controllers;
use yii;
use yii\web\controller;
use frontend\models\uploadm;
use yii\web\uploadedfile;
class formcontroller extends controller{
  public function actionmyfiles(){
      $model=new uploadm();
      return $this->renderpartial('myfiles',['model'=>$model]);
  }
  public function actiongetfiles(){
    $model = new uploadm();
    if (yii::$app->request->ispost) {
      $model->imgfile = uploadedfile::getinstances($model, 'imgfile');
      if ($model->upload()) {
        // 文件上传成功
        echo '上传成功';
      }
    }
  }

<?php
namespace frontend\models;
use yii;
use yii\base\model;
use yii\web\uploadedfile;
class uploadm extends model
{
  public $imgfile;
  public function rules(){
    return [
       [['imgfile'], 'file','maxfiles' => 5],//最多5张
    ];
  }
  public function upload()
  {
   if ($this->validate()) { 
     foreach ($this->imgfile as $file) {
       $file->saveas('uploads/' . $file->basename . '.' . $file->extension);
     }
     return true;
   } else {
     return false;
   }
  }
} 

<?php
use yii\helpers\html;
use yii\widgets\activeform;
$form = activeform::begin([
  'id' => 'login-form',
  'options' => ['class' => 'form-horizontal','enctype' => 'multipart/form-data'],
  'action'=>'?r=form/getfiles',
  'method'=>'post'
]) ?>
  <?= $form->field($model, 'imgfile[]')->fileinput(['multiple' => true]) ?>

  <div class="form-group">
    <div class="col-lg-offset-1 col-lg-11">
      <?= html::submitbutton('上传', ['class' => 'btn btn-primary']) ?>
    </div>
  </div>
<?php activeform::end() ?>