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<?php $a = new DateTime("2017-11-17 22:05:26.000000", new DateTimeZone('UTC')); $b = new DateTime("2017-04-03 22:29:15.079459", new DateTimeZone('UTC')); $diff = $a->diff($b); var_dump($diff->h); $a = new DateTime("2017-11-17 22:05:26.000000", new DateTimeZone('Africa/Nairobi')); $b = new DateTime("2017-04-03 22:29:15.079459", new DateTimeZone('Africa/Nairobi')); $diff = $a->diff($b); var_dump($diff->h);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
int(23) int(23)

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192.33 ms | 403 KiB | 211 Q