ID, 'member_number', true ); if ( empty( $member_id ) ) { // lets generate it on the fly. $member_id = generate_member_number( $user->ID ); } echo '

Membership Number: ' . esc_html( $member_id ) . '

'; } add_action( 'pmpro_membership_card_after_card', 'my_show_member_number_on_card' );