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PHP DateTime add () function

Syntax:
  • Object Oriented Style:
    DateTime DateTime::add (DateInterval  $interval)
  • Procedural style:
    DateTime date_add (DateTime $object, DateInterval $interval)
Parameters:This function takes two parameters as above and described below:
  • $object:specifies the DateTime object returned by the date_create() function. This function returns a new DateTime object.
  • $interval:this parameter contains a DateInterval object.
Return value: this function returns a new DateTime object after change on success or False on error.The following programs illustrate the DateTime::add() function in PHP:Program 1:  
// Initializing DateTime $datetime = new DateTime ( ’2019-09-30’ );  
// DateInterval object is taken as
// add() function parameter
// 1 day has been added here $datetime -> add ( new DateInterval ( ’P1D’ ));  
// Get a new date after adding echo $datetime -> format ( ’Ymd’ ). "" ; ?>
Exit:
2019-10 -01
Program 2:  
// Initialize DateTime $datetime = new DateTime ( ’2019-09-30’ );  
// DateInterval object is taken as
// add() function parameter
// Added 5 hours, 3 minutes and 10 seconds here $datetime -> add ( new DateInterval ( ’PT5H3M10S’ ));  
// Get a new date after adding echo $datetime -> format ( ’Ymd H: i: s’ ). "" ; ?>
Exit:
2019-09 -30 05:03:10
Link: https: / /www.php.net/manual/en/datetime.add.php

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