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<?php $now = new DateTime('now', new \DateTimeZone('UTC')); // true, всё верно, сдвиг одинаковый var_dump((new DateTimeZone('Africa/Cairo'))->getOffset($now) === (new DateTimeZone('Europe/Paris'))->getOffset($now)); $d1 = new DateTimeImmutable('2020-01-01 15:00', new DateTimeZone('Europe/Paris')); $d2 = new DateTimeImmutable('2020-01-01 15:00', new DateTimeZone('Africa/Cairo')); // вот тут проблема, unix должен быть одинаковый var_dump($d1->getTimestamp() === $d2->getTimestamp() + 3600);
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
bool(true) bool(true)

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151.75 ms | 408 KiB | 5 Q