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run code in 300+ PHP versions simultaneously
<?php foreach (DateTimeZone::listIdentifiers() as $tz) { date_default_timezone_set($tz); $date1 = new \DateTime('2019-09-24 11:47:24'); $date2 = new \DateTime('2019-08-21 12:47:24'); $diff = $date1->diff($date2); if ($diff->h < 0) { echo $tz, PHP_EOL; } }
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Output for 7.1.25 - 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
Asia/Tehran

preferences:
137.19 ms | 402 KiB | 179 Q