Date comparison issue using DateTime class in PHP

Question

I created a function to compare dates:

public function checkExpiredDate($cardDate) : bool
{
     $currentDate = new DateTime();
     $creditCardDate = new DateTime("{$cardDate->card_expiryYear}-{$cardDate->card_expiryMonth}-*last day from the month*");
     echo $creditCardDate->format('Y-m-d'); exit();
     return $creditCardDate->getTimestamp() < $currentDate->getTimestamp() ?? true;
}

I only have the month and year , not the day. I need to compare today's date with that date using only the month and year and the DateTime class . How can I do that ? Is there a way to get the last day from a month and year using the DateTime class? If I could get it someone using DateTime , my function should work .

https://stackoverflow.com/questions/1686724/how-to-find-the-last-day-of-the-month-from-date — Frédéric Clausset, Nov 10 '17 at 08:41
Hi, would it be an option to use the date() class instead? Why do you need the last day of the month if you only have the month and the year to compare? — Towerss, Nov 10 '17 at 08:47

score 1 · Accepted Answer · answered Nov 10 '17 at 08:36

1

Set day as the 1st day of the month and then modify to the last

$creditCardDate = new DateTime("{$cardDate->card_expiryYear}-{$cardDate->card_expiryMonth}-1");
$creditCardDate->modify('last day of this month');

answered Nov 10 '17 at 08:36

splash58

26,043
3
22
34

deceze · Answer 2 · 2017-11-10T08:44:46.857

0

Surely it's easier not to use DateTime at all here:

return $cardDate->card_expiryYear . $cardDate->card_expiryMonth <= date('Ym');

This assumes $cardDate->card_expiryYear . $cardDate->card_expiryMonth concatenates to something like 201709; use some number formatting to achieve this format otherwise:

return sprintf('%d%02d', $cardDate->card_expiryYear, $cardDate->card_expiryMonth) <= date('Ym');

edited Nov 10 '17 at 08:44

answered Nov 10 '17 at 08:37

deceze

510,633
85
743
889

score 0 · Answer 3 · answered Nov 10 '17 at 08:41

0

http://php.net/manual/en/datetime.modify.php

$creditCardDate->modify('last day of this month');

answered Nov 10 '17 at 08:41

Erik

384
1
9

Date comparison issue using DateTime class in PHP

3 Answers3