1<?php 2 3/** 4 * webtrees: online genealogy 5 * Copyright (C) 2021 webtrees development team 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, either version 3 of the License, or 9 * (at your option) any later version. 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <https://www.gnu.org/licenses/>. 16 */ 17 18declare(strict_types=1); 19 20namespace Fisharebest\Webtrees\Census; 21 22use Fisharebest\Webtrees\Individual; 23 24/** 25 * The individual's date of birth. 26 */ 27class CensusColumnBirthYear extends AbstractCensusColumn implements CensusColumnInterface 28{ 29 /** 30 * Generate the likely value of this census column, based on available information. 31 * 32 * @param Individual $individual 33 * @param Individual $head 34 * 35 * @return string 36 */ 37 public function generate(Individual $individual, Individual $head): string 38 { 39 return $individual->getEstimatedBirthDate()->minimumDate()->format('%Y'); 40 } 41} 42