The sub Method of the DateTime Class

The sub method of the DateTime class subtracts the specified time interval from the date. It accepts an object of DateInterval as a parameter. The date object itself is modified in the process.

Syntax

php$datetime->sub(DateInterval $interval);

Example

Subtract 2 days from the current date:

php<?php
  $date = new DateTime('2023-05-15');
  $interval = new DateInterval('P2D');
  $date->sub($interval);
  echo $date->format('Y-m-d');
?>

Code execution result:

php'2023-05-13'

Example

Subtract 1 month and 5 days from the specified date:

php<?php
  $date = new DateTime('2023-06-20');
  $interval = new DateInterval('P1M5D');
  $date->sub($interval);
  echo $date->format('Y-m-d');
?>

Code execution result:

php'2023-05-15'

See Also