[function.fopen]: failed to open stream: HTTP request failed! HTTP/1.1 401 Unauthorized

Question

[function.fopen]: failed to open stream: HTTP request failed! HTTP/1.1 401 Unauthorized

I am periodically getting this error, i.e it is only happening at random times, a

Answer 1

You are trying to access a site that requires authentication, as maggie pointed out. fopen() does not support HTTP Basic Authentication, so you must use the Client URL Library to achieve such functionalities.

This has been discussed before.