litlfred

$cost = 0;
foreach ( array('lodging','local_transport','transport','other') as $cost) {
    if (!array_key_exists($cost,$this->fields) || ! $this->fields[$cost] instanceof I2CE_FormField_INT) {
       I2CE::raiseError("Field $cost is not an INT");
       continue;
    }
    $cost += $this->inflateCosts($year_offset,max(0,$this->fields[$cost]->getValue());

}