Get logged in user with - custom plugin

Question

I am writing my own plugin and I am stuck quite early on. I am trying to get the ID of currently logged in user, via php script. Something like this

add_action('init','do_stuff');
function do_stuff(){
    $current_user = wp_get_current_user();
    // rest of my code here
}

However I am always getting the result 0.

I am aware that there are multiple similar questions, but literally no solutions worked so far. E.g.

wp_get_current_user always returns 0

wp_get_current_user() function not working in Rest API callback function

wp_get_current_user always returns 0 continued

Answer 1

Instead of using init hook why don't you use the wp_loaded hook. This way, you're sure that everything is loaded

add_action('wp_loaded','do_stuff');
function do_stuff(){
    $current_user = wp_get_current_user();
    if ($current_user->ID > 0) {
        // rest of your code here
        // $current_user->ID will give you the ID of the current user.
    }
}