How to calculate the number of nights using two dates in PHP

Question

Here's my code.

$checkinDate = $_POST['checkinDate'];
$checkoutDate = $_POST['checkoutDate'];
$no_nights = date_diff($checkinDate, $checkoutDate);

My code error:

Warning: date_diff() expects parameter 1 to be DateTimeInterface, string given in C:\xampp\htdocs\lgh-hms\admin\conformation.php on line 19

`checkinDate` and `checkoutDate` will have only date or date-time both ? — Himanshu Upadhyay, Sep 21 '17 at 06:21
Possible duplicate of [How do I get the number of days between two dates in JavaScript?](https://stackoverflow.com/questions/542938/how-do-i-get-the-number-of-days-between-two-dates-in-javascript) — teju c, Sep 21 '17 at 06:22
@dadadaxtr, check A. Iglesias's answer, this will be helpful to you. — Himanshu Upadhyay, Sep 21 '17 at 06:27

A. Iglesias · Answer 1 · 2017-09-21T06:42:54.760

1

date_diff needs date, not string...

Procedural style:

$checkinDate = date_create($_POST['checkinDate']);
$checkoutDate = date_create($_POST['checkoutDate']);
$interval = date_diff($checkinDate,$checkoutDate);
$no_nights = $interval->format('%a');

With Objects:

$checkinDate = new DateTime($_POST['checkinDate']);
$checkoutDate = new DateTime($_POST['checkoutDate']);
$interval = $checkinDate->diff($checkoutDate);
$no_nights = $interval->format('%a');

I hope it helps

edited Sep 21 '17 at 06:42

answered Sep 21 '17 at 06:24

A. Iglesias

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My pleasure!! Have a nice day and happy coding! – A. Iglesias Sep 21 '17 at 06:30
it has error sir. Catchable fatal error: Object of class DateTime could not be converted to string – dadadaxtr Sep 21 '17 at 06:31
i'm just using date – dadadaxtr Sep 21 '17 at 06:32
What line is giving you that error? Show me what do you have in $_POST['checkinDate'] and $_POST['checkoutDate'], please – A. Iglesias Sep 21 '17 at 06:34
Yes, you're right! With date_diff you get a DateInterval object.I've edited the answer. – A. Iglesias Sep 21 '17 at 06:43
@A.Iglesias Doesn't work for `18-01-2019 16:00` (Friday) and `21-01-2019 08:00` (Monday). Returns 2, correct is 3 (nights). – Jasom Dotnet Nov 16 '18 at 06:28

How to calculate the number of nights using two dates in PHP

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