1<?php 2/** 3 * webtrees: online genealogy 4 * Copyright (C) 2018 webtrees development team 5 * This program is free software: you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation, either version 3 of the License, or 8 * (at your option) any later version. 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17namespace Fisharebest\Webtrees\Census; 18 19use Fisharebest\Webtrees\Individual; 20 21/** 22 * The individual's date of birth. 23 */ 24class CensusColumnBirthYear extends AbstractCensusColumn implements CensusColumnInterface { 25 /** 26 * Generate the likely value of this census column, based on available information. 27 * 28 * @param Individual $individual 29 * @param Individual $head 30 * 31 * @return string 32 */ 33 public function generate(Individual $individual, Individual $head = null) { 34 return $individual->getEstimatedBirthDate()->minimumDate()->format('%Y'); 35 } 36} 37