Online PHP editor | output for jh17i

<?php declare(strict_types=1); class DateValidator { const DATE_FORMAT = 'd/m/Y'; // DD/MM/YYYY const DATE_EXP = '/([0-9]{2})\/([0-9]{2})\/([0-9]{4})/'; public static function validateHistoricalDate(string $dateString): HistoricalDate { $historicalDate = new HistoricalDate($dateString); $date = DateTime::createFromFormat(self::DATE_FORMAT, $dateString); if (!$date || !preg_match(self::DATE_EXP, $dateString, $dateParts)) { $historicalDate->setMessage('Date is not in the required format DD/MM/YYYY [PHP - d/m/Y]'); return $historicalDate; } if (!checkdate((int) $dateParts[2], (int) $dateParts[1], (int) $dateParts[3])) { $historicalDate->setMessage('Date is not valid'); return $historicalDate; } if ($date > new DateTime()) { $historicalDate->setMessage('Date is not historical'); return $historicalDate; } $historicalDate->setValidity(true); return $historicalDate; } } class HistoricalDate { private $date; private $valid = false; private $message = ''; public function __construct(string $date) { $this->setDate($date); } public function setValidity(bool $value) { $this->valid = $value; } public function setMessage(string $message) { $this->message = $message; } public function isValid(): bool { return $this->valid; } public function getMessage(): string { return $this->message; } public function getDate(): string { return $this->date; } private function setDate(string $date) { $this->date = $date; } } $dateString = "99/02/2017"; $result = DateValidator::validateHistoricalDate($dateString); if (!$result->isValid()) { $message = $result->getMessage(); } echo $result->isValid() ? 'Valid date' : $message;