How to obtain author ID and get author profile outside the WordPress loop

WordPress allows you to create a custom Author web page for your WordPress blog and you can make this page look like anything you want. It is easy to display author’s profile inside the WordPress loop. However, it can be a challenge when you have multi-users blog and trying to dynamically display author profile for the current post on the single page using sidebar or widget.

This knowledge will show you how to get the author ID of the current post outside the loop and display the profile correctly.