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<?php $isDateValid = function($date){ $a = DateTime::createFromFormat('Y-m-d', $date, new DateTimeZone('UTC')); return $date === $a->format('Y-m-d'); }; var_dump($isDateValid('2010-12-31')); var_dump($isDateValid('2010-12-32'));
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
bool(true) bool(false)
preferences:
130.86 ms | 404 KiB | 218 Q