How do I add 1 day to a date?

I am not a programmer, but I work on one site as an administrator. It was necessary to add 1 day to the date. It seems to me that this should be done here: 

$date=substr($order->date,0,10);

Can you tell me how to prescribe all this?

Date format - datetime 2016-09-02 10:13:54

Thanks!

Author: Nikita Rogatnev, 2018-12-26
Source

3 answers

Select the appropriate option:

1.

$timestamp = time(); // 1545818743

$datePlus = (new DateTime('@' . $timestamp))
    ->modify('1 day')
    ->format(DateTime::ATOM);

var_dump($datePlus);

2.

$dateString = (new DateTime()) -> format(DateTime::ATOM); // 2018-12-26T02:06:57-08:00

$datePlus = (new DateTime($dateString))
    ->modify('1 day')
    ->format(DateTime::ATOM);

var_dump($datePlus);

3.

$dateObject = new DateTime(); // object DateTime

$datePlus = $dateObject
    ->modify('1 day')
    ->format(DateTime::ATOM);

var_dump($datePlus);
 1
Author: eustatos, 2018-12-26 10:29:03

I would do so

$date = date('Y-m-d', strtotime($order->date) + 86400);

Http://codepad.org/PDBMiX6D

If in general, you can also make strtotime "translate the clock", then I just added 86400 seconds (one day) to the date.

$date = date(
    'Y-m-d', 
    strtotime('+1 day', strtotime($order->date))
);

Here you can already write +5 weeks and anything else instead of +1 day

 0
Author: mr. Pavlikov, 2018-12-26 14:59:34

Earned this option: 

$date = substr(date('Y-m-d H:i:s', strtotime($order->date.'1 day')),0,10);
 -1
Author: kopetan, 2018-12-26 12:09:30