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<?php $dateofbirth = '18/11/80'; $date = DateTime::createFromFormat('d/m/Y', $dateofbirth); $date_errors = DateTime::getLastErrors(); var_dump($date_errors); if ($date_errors['warning_count'] + $date_errors['error_count'] > 0) { echo 'Date '.$dateofbirth.' is not a valid DD/MM/YYYY format.'; } else { echo $date->format('Y-m-d'); }

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