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PHP | DateTime modify() Function

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

The DateTime::modify() function is an inbuilt function in PHP which is used to modify or can alter the timestamp of a DateTime object.

Syntax:

  • Object oriented style: 
    DateTime DateTime::modify( string $modify )
  • Procedural style: 
    DateTime date_modify( DateTime $object, string $modify )

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

  • $object: It specifies the DateTime object returned by date_create() function. This object is modified by DateTime::modify() function.
  • $modify: It specifies the date/time string. It is incremented or decremented to modify the DateTime object.

Return Value: This function returns the modified DateTime object on success or False on failure.

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

Program 1 :

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<?php
// PHP program to illustrate 
// DateTime::modify() function
// Creating a DateTime object
$datetime = new DateTime('2019-09-30');
// Calling of date DateTime::modify() function
// with the increment of 5 days as parameters
$datetime->modify('+5 day');
// Getting the modified date in "y-m-d" format
echo $datetime->format('Y-m-d');
?>
Output: 
2019-10-05

Program 2:

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<?php
// PHP program to illustrate the
// DateTime::modify() function
// Creating a DateTime object
$datetime = new DateTime('2019-09-30');
// Calling of date DateTime::modify() function
// with the increment of 5 months as parameters
$datetime->modify('+5 month');
// Getting the modified date in "y-m-d" format
echo $datetime->format('Y-m-d');
?>
Output: 
2020-03-01

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


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