Determining which input uploaded which file

Hello ,

I have a problem determining which input it's uploading each file. I have 3 inputs that post only images but each one it's labeled and the person who uploads should upload the specific file in the specific input. They are in total 3 inputs for uploading files , but i cant figure it out how to know which input was posted in order to rename the file according to it.

For retrieving the post i use the following code :

public function store(Request $request) { $this->validate($request, [ 'buletin' => 'mimes:jpeg,jpg,png,bmp', 'factura' => 'mimes:jpeg,jpg,png,bmp', 'card' => 'mimes:jpeg,jpg,png,bmp', ]); $username = $request->input('username');

    $files = [];

    if ($request->file('buletin'))
    {
        $files[] = $request->file('buletin');
    }

    if ($request->file('factura')){
        $files[] = $request->file('factura');
    }
    if ($request->file('card')){
        $files[] = $request->file('card');
    }

    foreach($files as $file){
        dd($file);
        $img = Image::make($file)->encode('jpg', 75)->resize(1024,768);
        $fileFileName = $username . '_// the document name according to the name of the form ';
        $filePath = '/'.$username.'/' . $fileFileName;

        $document = new DocumentModel();
        $document->username = $username;
        $document->document =  // the document name according to the name of the form
        $document->filename = $fileFileName;
        $document->filepath = $filePath;
        $document->save();

    }

}

Does anyone have an idea how to achieve this ?

Thank you