Online PHP editor | output for AoXgT

<?php date_default_timezone_set('Europe/Amsterdam'); $baseDate = new DateTimeImmutable('2022-03-27 01:30:00'); echo $baseDate->add(new DateInterval('PT1H'))->format('Y-m-d H:i:s'), " ✓ 1\n"; echo $baseDate->add(new DateInterval('PT2H'))->format('Y-m-d H:i:s'), " ✕ 2\n"; echo $baseDate->add(new DateInterval('PT1H'))->add(new DateInterval('PT1H'))->format('Y-m-d H:i:s'), " ✓ 1+1\n"; echo $baseDate->add(new DateInterval('PT3H'))->format('Y-m-d H:i:s'), " ✕ 3\n"; echo $baseDate->add(new DateInterval('PT2H'))->add(new DateInterval('PT1H'))->format('Y-m-d H:i:s'), " ✕ 2+1\n"; echo $baseDate->add(new DateInterval('PT1H'))->add(new DateInterval('PT2H'))->format('Y-m-d H:i:s'), " ✓ 1+2\n"; echo $baseDate->add(new DateInterval('PT1H'))->add(new DateInterval('PT1H'))->add(new DateInterval('PT1H'))->format('Y-m-d H:i:s'), " ✓ 1+1+1\n";