District::getPrevDistrict - jcobban/Genealogy GitHub Wiki
$district->getPrevDistrict()
Up: class District
This factory method is used to obtain the instance of District representing the District which immediately precedes the current District within the current Census. Districts are identified by a number.
This returns an instance of District if the current District is not the District with the lowest numeric identifier, that is 1, otherwise it returns null.
$prevDistrict = $district->getPrevDistrict();