PHP 5.4.31 Released

DateTime::getTimestamp

DateTimeImmutable::getTimestamp

DateTimeInterface::getTimestamp

date_timestamp_get

(PHP 5 >= 5.3.0)

DateTime::getTimestamp -- DateTimeImmutable::getTimestamp -- DateTimeInterface::getTimestamp -- date_timestamp_getGets the Unix timestamp

Description

Object oriented style

public int DateTime::getTimestamp ( void )
public int DateTimeImmutable::getTimestamp ( void )
public int DateTimeInterface::getTimestamp ( void )

Procedural style

Gets the Unix timestamp.

Parameters

This function has no parameters.

Return Values

Returns the Unix timestamp representing the date.

Examples

Example #1 DateTime::getTimestamp() example

Object oriented style

<?php
$date 
= new DateTime();
echo 
$date->getTimestamp();
?>

Procedural style

<?php
$date 
date_create();
echo 
date_timestamp_get($date);
?>

The above examples will output something similar to:

1272509157

Notes

Using U as the parameter to DateTime::format() is an alternative when using PHP 5.2.

See Also

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User Contributed Notes 2 notes

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5
Justin Heesemann
4 years ago
Note that for dates before the unix epoch getTimestamp() will return false, whereas format("U") will return a negative number.

<?php
$date
= new DateTime("1899-12-31");
// "-2209078800"
echo $date->format("U");
// false
echo $date->getTimestamp();
?>
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0
heiccih at gmail dot com
4 months ago
In 32-bit system the unix timestamp will overflow if the date goes beyond year 2038 and this method will return false. In 64-bit systems this function will still work as intended. For more information please see http://en.wikipedia.org/wiki/Year_2038_problem.
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