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PHP | DateTime add() Function

 3 years ago
source link: https://www.geeksforgeeks.org/php-datetime-add-function/
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DateTime add() Function
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PHP | DateTime add() Function
  • Last Updated : 10 Oct, 2019

The DateTime::add() function is an inbuilt function in PHP which is used to add an amount of time (days, months, years, hours, minutes and seconds) to the given DateTime object.

Syntax:

  • Object oriented style: 
    DateTime DateTime::add( DateInterval $interval )
  • Procedural style: 
    DateTime date_add( DateTime $object, DateInterval $interval )

Parameters: This function uses two parameters as mentioned above and described below:

  • $object: It specifies the DateTime object returned by date_create() function. This function returns a new DateTime object.
  • $interval: This parameter holds the DateInterval object.

Return Value: This function returns the new DateTime object after changing on success or False on failure.

Below programs illustrate the DateTime::add() function in PHP:

Program 1:

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<?php
// Initialising a DateTime
$datetime = new DateTime('2019-09-30');
// DateInterval object is taken as the 
// parameter of the add() function
// Here 1 day is added
$datetime->add(new DateInterval('P1D'));
// Getting the new date after addition
echo $datetime->format('Y-m-d') . "\n";
?>
Output: 
2019-10-01

Program 2:

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<?php
// Initialising a DateTime
$datetime = new DateTime('2019-09-30');
// DateInterval object is taken as the 
// parameter of the add() function
// Here 5 hours, 3 Minutes and 10 seconds is added
$datetime->add(new DateInterval('PT5H3M10S'));
// Getting the new date after addition
echo $datetime->format('Y-m-d H:i:s') . "\n";
?>
Output: 
2019-09-30 05:03:10

Reference: https://www.php.net/manual/en/datetime.add.php


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