DATETIME.MODIFY(3)							 1							DATETIME.MODIFY(3)

DateTime::modify - Alters the timestamp

       Object oriented style

SYNOPSIS

       public DateTime DateTime::modify (string  $modify)

DESCRIPTION

       Procedural style
       DateTime date_modify (DateTime  $object, string	$modify)

	Alter the timestamp of a DateTime object by incrementing or decrementing in a format accepted by strtotime(3).

PARAMETERS

	      o $object
		-Procedural style only: A DateTime object returned by date_create(3). The function modifies this object.

	      o $modify
		-A date/time string. Valid formats are explained in Date and Time Formats.

RETURN VALUES

	Returns the DateTime object for method chaining or FALSE on failure.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.6	|						    |
       |	|						    |
       |	|  Absolute  date/time	statements now take effect. |
       |	| Previously, only relative parts were used.	    |
       |	|						    |
       | 5.3.0	|						    |
       |	|						    |
       |	| Changed the return value on success from NULL  to |
       |	| DateTime.					    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      DateTime.modify(3) example

	      Object oriented style

	      <?php
	      $date = new DateTime('2006-12-12');
	      $date->modify('+1 day');
	      echo $date->format('Y-m-d');
	      ?>

	      Procedural style

	      <?php
	      $date = date_create('2006-12-12');
	      date_modify($date, '+1 day');
	      echo date_format($date, 'Y-m-d');
	      ?>

	      The above examples will output:

	      2006-12-13

       Example #2

	      Beware when adding or subtracting months

	      <?php
	      $date = new DateTime('2000-12-31');

	      $date->modify('+1 month');
	      echo $date->format('Y-m-d') . "
";

	      $date->modify('+1 month');
	      echo $date->format('Y-m-d') . "
";
	      ?>

	      The above example will output:

	      2001-01-31
	      2001-03-03

SEE  ALSO  
strtotime(3),  DateTime.add(3),  DateTime.sub(3),  DateTime.setDate(3), DateTime.setISODate(3), DateTime.setTime(3), DateTime.setTimes-
       tamp(3).
PHP Documentation Group 													DATETIME.MODIFY(3)