How to forward mail with php-ews - php

Question

I'll try to forward a mail with php-ews, but can't get it to work.
I have read the documentation for XML EWS
https://learn.microsoft.com/en-us/exchange/client-developer/exchange-web-services/how-to-respond-to-email-messages-by-using-ews-in-exchange
but I'll guess I've missed something.
$request = new CreateItemType();
$request->MessageDisposition = MessageDispositionType::SEND_AND_SAVE_COPY;
$request->Items = new NonEmptyArrayOfAllItemsType();
$request->Items->ForwardedItem = new ForwardItemType();
$request->Items->ForwardedItem->ToRecipients = new MessageType();
$request->Items->ForwardedItem->ToRecipients->Mailbox = new EmailAddressType();
$request->Items->ForwardedItem->ToRecipients->Mailbox->MailboxName = 'Foo Bar';
$request->Items->ForwardedItem->ToRecipients->Mailbox->MailboxAddress = 'Foo#Bar.com';
$request->Items->ForwardedItem->ReferenceItemId = new ItemIdType();
$request->Items->ForwardedItem->ReferenceItemId->Id = 'AAMk.....AAA=';
$request->Items->ForwardedItem->ReferenceItemId->ChangeKey = 'CQAA.....GOP';
$request->Items->ForwardedItem->NewBodyContent = new BodyContentType();
$request->Items->ForwardedItem->NewBodyContent->Value = 'Test';
$request->Items->ForwardedItem->NewBodyContent->BodyType = BodyTypeType::HTML;
The error message I'll get is:
Fatal error: Uncaught SoapFault exception: [a:ErrorInvalidRequest] Id
must be non-empty.

Answer 1

This doesn't look right
$request->Items->ForwardedItem->ToRecipients = new MessageType();
$request->Items->ForwardedItem->ToRecipients->Mailbox = new EmailAddressType();
$request->Items->ForwardedItem->ToRecipients->Mailbox->MailboxName = 'Foo Bar';
$request->Items->ForwardedItem->ToRecipients->Mailbox->MailboxAddress = 'Foo#Bar.com';
ToRecipients should be an array of recipient types so i think it should be
$request->Items->ForwardedItem->ToRecipients = new ArrayOfRecipientsType();
$recipient = new EmailAddressType();
$recipient->Name = 'Homer Simpson';
$recipient->EmailAddress = 'hsimpson#example.com';
$request->Items->ForwardedItem->ToRecipients->Mailbox[] = $recipient;