function calculate_totals($property_locations) { // Calculate $parties = frontend_borental::get_all_parties(); $totals = frontend_borental::get_total_cost_and_area($parties); $this->header_state['total_price'] = number_format($totals['sum_total_price'], 0, ",", " ") . " kr"; $this->header_state['total_area'] = number_format($totals['sum_total_area'], 0, ",", " ") . " kvm"; }