[Forums] Rest api instead of php curl

The url of the customer is a https url with authentication. I also could not get the PostRequest working. It returns the error 401. Already tried to add a header authentication with value= binarytobase64(stringtobinary((user:pass)) but that also not works.

Also I tried to add the user and pass in the url of the PostRequest:
Url: https://user:pass@url.com