How do I use get_query_var() within plguin code

Question

I am tring to access the author's id using

get_query_var('author')

, but this only seems to work on the page, not within plguin code.

How do I access this from within plugin code?

Answer 1

get_query_var works within any code, theme or plugin. But it will only return meaningful data after the query has been processed. So, use it on the init hook or later.