Laravel 5.3 multiple file uploads

How can I upload multiple files in Laravel 5.3. If I try it with 1 image it works but multiple images are not uploaded.

This is my code:

if($request->hasFile('attachment')) {
    foreach($request->allFiles('attachments') as $file) {
        $file->store('users/' . $user->id . '/messages');
    }
}

Answer

It works now like this:

$files = $request->file('attachment');

if($request->hasFile('attachment'))
{
    foreach ($files as $file) {
        $file->store('users/' . $this->user->id . '/messages');
    }
}

I had to append [] after the value of the name attribute, so:

<input type="file" name="attachment[]" multiple>