Check if specific username is logged in
wp_get_current_user then compare the object that’s returned user_login proprety with the specific username you’d like to check against. <?php add_action(‘admin_init’, ‘wpse74389_check_username’); function wpse74389_check_username() { $user = wp_get_current_user(); if($user && isset($user->user_login) && ‘username_to_check’ == $user->user_login) { // do stuff } }