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I would like to access author id when a visitor come to author page? when I am coding in author.php file, I could print author id like below

$q_obj = get_queried_object();
$user_id = (int) $q_obj->data->ID;

But, if I would like to get user id functions.php, How should I print?

function zb_user_analyze() {
    // I would like to access user id here
}
add_action('wp_loaded', 'zb_user_analyze');

Note: I only want to access author page user id for nonlogin user.

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wp_loaded hook runs before Wordpress has setup postdata so you won't be able to get there the information you need.

The earliest hook you can use to have that information should be wp.

You can use is_author() to check if you're on an author page and is_user_logged_in() to check if the user is logged in:

function zb_user_analyze() {
    if( is_author() && !is_user_logged_in() ) {
        $author_id = get_query_var( 'author' );
        // do something
    }
}
add_action('wp', 'zb_user_analyze');
  • Did this helped? – dbeja Jul 21 '17 at 23:04

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