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<?php $original_dod = '23/01/17'; $dod = DateTimeImmutable::createFromFormat('d/m/y', $original_dod); $formated = $dod->format('d/m/19y'); $formatedISO = $dod->format('19y-m-d'); var_dump($formated); var_dump($formatedISO);
Output for 8.2.29, 8.3.5 - 8.3.25, 8.4.9 - 8.4.12
string(10) "23/01/1917" string(10) "1917-01-23"

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