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DateTime::modify

(PHP 5 >= 5.2.0)

DateTime::modify -- date_modify — Alters the timestamp

Category:
Function name:

DateTime::modify

(PHP 5 >= 5.2.0)

DateTime::modify -- date_modify — Alters the timestamp

public DateTime $object->modify(string $modify)

$object:

$modify:

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Description #

public DateTime DateTime::modify ( string $modify )

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

Parameters #

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.

Examples #

Example #1 DateTime::modify() 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

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.

See Also #

Main PHP Function Online page
strtotime() - Parse about any English textual datetime description into a Unix timestamp
DateTime::add() - Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object
DateTime::sub() - Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object
DateTime::setDate() - Sets the date
DateTime::setISODate() - Sets the ISO date
DateTime::setTime() - Sets the time
DateTime::setTimestamp() - Sets the date and time based on an Unix timestamp

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