code doesnt work

I want to add the code in the header.php

Hi, did you try this code?

<?php echo get_avatar(get_the_author_meta('ID'), 96); ?>

it doesnt work.
I think it doesnt find the User-ID because it is in the header.php.

Try this instead:

<?php echo get_wp_user_avatar($post->post_author, 96); ?>

The code displays again my avatar for everyone.

I want to make a user area.
The avatar is then to be always displayed regardless of whether you are in the home or to read an article

It works now ??

I use this code:

<?php global $current_user;
get_currentuserinfo();
echo get_wp_user_avatar($current_user->ID, 96); ?>

Okay, I wasn’t understanding what you wanted to show. I’m glad you figured it out.