Comment implémenter le téléchargement de fichiers dans Zend Framework

use ZendFormElement;
use ZendFormForm;

class UploadForm extends Form
{
    public function __construct($name = null)
    {
        parent::__construct($name);

        // 添加文件上传元素
        $file = new ElementFile('file');
        $file->setLabel('选择文件')
             ->setAttribute('id', 'file-upload');
             
        $this->add($file);
        
        // 添加提交按钮
        $submit = new ElementSubmit('submit');
        $submit->setValue('上传');
        
        $this->add($submit);
    }
}

use ZendMvcControllerAbstractActionController;
use ZendViewModelViewModel;
use ZendInputFilterInputFilter;
use ZendValidatorFileSize;
use ZendValidatorFileMimeType;

class UploadController extends AbstractActionController
{
    public function indexAction()
    {
        // 创建文件上传表单
        $form = new UploadForm();
        
        $request = $this->getRequest();

        if ($request->isPost()) {
            // 实例化输入过滤器
            $inputFilter = new InputFilter();
            
            // 添加文件类型的输入过滤
            $fileInput = new InputFilterFileInput('file');
            $fileInput->setRequired(true);
            $fileInput->getValidatorChain()
                      ->attach(new Size(['max' => '2MB']))
                      ->attach(new MimeType(['image/jpeg', 'image/png']));
            
            $inputFilter->add($fileInput);
            
            // 将过滤后的数据绑定到表单
            $form->setInputFilter($inputFilter);
            $form->setData($request->getPost());
            
            // 检查表单数据是否有效
            if ($form->isValid()) {
                // 获取上传的文件
                $file = $form->get('file')->getValue();

                // 保存文件到指定目录
                $destination = '/path/to/save/uploaded/files/' . $file['name'];
                move_uploaded_file($file['tmp_name'], $destination);
                
                // 重定向到成功页面
                return $this->redirect()->toRoute('upload', ['action' => 'success']);
            }
        }

        return new ViewModel([
            'form' => $form
        ]);
    }
}

<h2>文件上传</h2>

<?= $this->form()->openTag($form) ?>
    <?= $this->formRow($form->get('file')) ?>
    <?= $this->formSubmit($form->get('submit')) ?>
<?= $this->form()->closeTag() ?>