访问PHP数组对象保护的属性 - Accessing PHP Array Object Protected Property

Accessing PHP Array Object Protected Property

我正在尝试在Symfony2中上传多个文件。我正在尝试访问以下请求对象，但无法获取parameters属性。如何一个接一个地访问文件以上传它们。

我得到的错误：

致命错误：无法访问第66行/var/www/File/src/Webmany/FileBundle/Entity/File.php中受保护的属性Symfony''Component''HttpFoundation''FileBag:：$parameters

请求对象：

Symfony'Component'HttpFoundation'FileBag Object
(
    [parameters:protected] => Array
        (
            [file] => Array
                (
                    [0] => Symfony'Component'HttpFoundation'File'UploadedFile Object
                        (
                            [test:Symfony'Component'HttpFoundation'File'UploadedFile:private] => 
                            [originalName:Symfony'Component'HttpFoundation'File'UploadedFile:private] => FLB1.jpg
                            [mimeType:Symfony'Component'HttpFoundation'File'UploadedFile:private] => image/jpeg
                            [size:Symfony'Component'HttpFoundation'File'UploadedFile:private] => 13584
                            [error:Symfony'Component'HttpFoundation'File'UploadedFile:private] => 0
                            [pathName:SplFileInfo:private] => /tmp/phpzdaQgW
                            [fileName:SplFileInfo:private] => phpzdaQgW
                        )
                    [1] => Symfony'Component'HttpFoundation'File'UploadedFile Object
                        (
                            [test:Symfony'Component'HttpFoundation'File'UploadedFile:private] => 
                            [originalName:Symfony'Component'HttpFoundation'File'UploadedFile:private] => FLB2.gif
                            [mimeType:Symfony'Component'HttpFoundation'File'UploadedFile:private] => image/gif
                            [size:Symfony'Component'HttpFoundation'File'UploadedFile:private] => 5193
                            [error:Symfony'Component'HttpFoundation'File'UploadedFile:private] => 0
                            [pathName:SplFileInfo:private] => /tmp/phpNUXho7
                            [fileName:SplFileInfo:private] => phpNUXho7
                        )
                )
        )
)

请帮我弄清楚这个对象的访问权限。此外，如果有人有更好的方法在Symfony2中上传文件。

要访问文件，您可以执行类似的操作

// retrieves an instance of UploadedFile
$request->files->get('file');

我认为您正试图直接访问该属性。您必须使用现有的getter和setter 1

这应该返回文件名：

// retrieves an instance of UploadedFile
$file = $request->files->get('file');
$file_name = $file->getClientOriginalName();