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date_modify

Description

The date_modify of Date / Time for PHP alters the timestamp.

Syntax

date_modify ( DateTime $object , string $modify ) : DateTime

Parameters

object

A DateTime object returned by date_create(). The function modifies this object.

modify

A date/time string. Valid formats are explained in Date and Time Formats.

Return

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

Examples

1 · object modify

<?

$object = date_create();
$modify = "1 year 1 month 1 week 1 day 1 hour 1 minute 1 second";

date_modify($object, $modify);

echo date_format($object, "Y-m-d H:i:s");

2026-02-28 03:29:52

2 · Return

<?

$object = date_create();
$modify = "1 year 1 month 1 week 1 day 1 hour 1 minute 1 second";

$return = date_modify($object, $modify);

var_export($return);

\DateTime::__set_state(array(
   'date' => '2026-02-28 03:29:52.609530',
   'timezone_type' => 3,
   'timezone' => 'UTC',
))