The date_add Function

The date_sub function allows adding an interval to a date. It accepts two parameters: a date object created via date_create and an interval created via date_interval_create_from_date_string.

Syntax

phpdate_add(DateTime $object, DateInterval $interval): DateTime

Example

Add 5 days to the current date:

php<?php
  $date = date_create('2023-01-01');
  $interval = date_interval_create_from_date_string('5 days');
  date_add($date, $interval);
  echo date_format($date, 'Y-m-d');
?>

Code execution result:

php'2023-01-06'

Example

Add 1 month and 10 days to the specified date:

php<?php
  $date = date_create('2023-03-15');
  $interval = date_interval_create_from_date_string('1 month + 10 days');
  date_add($date, $interval);
  echo date_format($date, 'Y-m-d');
?>

Code execution result:

php'2023-04-25'

See Also