gistfile1.php

add_action('pre_get_posts','redirect_non_subscribers');
 
function redirect_non_subscribers() {
    if (is_user_logged_in() && !current_user_is_member()) {
        $options = get_option('membership_options', array());
        if (!is_page($options['registration_page']) && !is_page($options['registrationcompleted_page'])) {
            wp_redirect( get_permalink($options['registration_page']) );
            exit;
        }
    }
}
 
add_action('admin_init','redirect_non_subscribers_admin');
 
function redirect_non_subscribers_admin(){
    if (is_user_logged_in() && !current_user_is_member() && !current_user_can('manage_options')) {
        $options = get_option('membership_options', array());
        wp_redirect( get_permalink($options['registration_page']) );
        exit;
    }
}