$current_user = wp_get_current_user();
    
    echo 'Username: ' . $current_user->user_login . '
';
    echo 'User email: ' . $current_user->user_email . '
';
    echo 'User first name: ' . $current_user->user_firstname . '
';
    echo 'User last name: ' . $current_user->user_lastname . '
';
    echo 'User display name: ' . $current_user->display_name . '
';
    echo 'User ID: ' . $current_user->ID . '
';