1--TEST-- 2Bug GH-9891 (DateTime modify with unixtimestamp (@) must work like setTimestamp) 3--FILE-- 4<?php 5$m = new DateTime('2022-12-20 14:30:25', new DateTimeZone('Europe/Paris')); 6$m->modify('@1234567890'); 7var_dump($m->getTimeStamp()); 8 9echo "=======\n"; 10 11$a = new DateTime('2022-11-01 13:30:00', new DateTimezone('America/Lima')); 12$b = clone $a; 13echo '$a: ', $a->format(DateTime::ATOM), "\n"; 14echo '$b: ', $b->format(DateTime::ATOM), "\n"; 15echo '$a: @', $a->getTimestamp(), "\n"; 16echo '$b: setTimestamp(', $b->getTimestamp(), ")\n"; 17$a->modify('@' . $a->getTimestamp()); 18$b->setTimestamp($b->getTimestamp()); 19echo '$a: ', $a->format(DateTime::ATOM), "\n"; 20echo '$b: ', $b->format(DateTime::ATOM), "\n"; 21?> 22--EXPECT-- 23int(1234567890) 24======= 25$a: 2022-11-01T13:30:00-05:00 26$b: 2022-11-01T13:30:00-05:00 27$a: @1667327400 28$b: setTimestamp(1667327400) 29$a: 2022-11-01T18:30:00+00:00 30$b: 2022-11-01T13:30:00-05:00 31