SunshinePHP Developer Conference 2015

DateTime::setTimestamp

date_timestamp_set

(PHP 5 >= 5.3.0)

DateTime::setTimestamp -- date_timestamp_setSets the date and time based on an Unix timestamp

Beschreibung

Objektorientierter Stil

public DateTime DateTime::setTimestamp ( int $unixtimestamp )

Prozeduraler Stil

DateTime date_timestamp_set ( DateTime $object , int $unixtimestamp )

Sets the date and time based on an Unix timestamp.

Parameter-Liste

object

Nur bei prozeduralem Aufruf: Ein von date_create() zurückgegebenes DateTime-Objekt. Diese Funktion verändert dieses Objekt.

unixtimestamp

Unix timestamp representing the date.

Rückgabewerte

Gibt das DateTime-Objekt für die Verkettung von Methoden zurück Im Fehlerfall wird FALSE zurückgegeben.

Beispiele

Beispiel #1 DateTime::setTimestamp() example

Objektorientierter Stil

<?php
$date 
= new DateTime();
echo 
$date->format('U = Y-m-d H:i:s') . "\n";

$date->setTimestamp(1171502725);
echo 
$date->format('U = Y-m-d H:i:s') . "\n";
?>

Prozeduraler Stil

<?php
$date 
date_create();
echo 
date_format($date'U = Y-m-d H:i:s') . "\n";

date_timestamp_set($date1171502725);
echo 
date_format($date'U = Y-m-d H:i:s') . "\n";
?>

Oben gezeigte Beispiele erzeugen eine ähnliche Ausgabe wie:

1272508903 = 2010-04-28 22:41:43
1171502725 = 2007-02-14 20:25:25

Anmerkungen

Using the Unix timestamp format to construct a new DateTime object is an alternative when using PHP 5.2, as shown in the example below.

Beispiel #2 DateTime::setTimestamp() alternative in PHP 5.2

<?php
$ts 
1171502725;
$date = new DateTime("@$ts");
echo 
$date->format('U = Y-m-d H:i:s') . "\n";
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

1171502725 = 2007-02-14 20:25:25

Siehe auch

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User Contributed Notes 3 notes

up
1
Use Web Form at Aouie.net
4 years ago
When the exact time is important then it is important to note the difference between this and the UnixTimeStamp. The function will change the timestamp if necessary to take into account the daylight savings time.
e.g. Working with the 'Europe/London' timezone and setting the DateTime object to a timestamp of 1288486753 will result in the function automatically altering it to 1288490353.
This is because it is taking the fall time instead of the summer time (they will both be Sun, 31-Oct-2010 01:X:Y (I didn't check the hour and minute)).
Sincerely,
Aouie
up
0
Arnb
1 year ago
When you need to manipulate a unix timestamp like field (seconds since 1970-01-01) that may be greater than the drop dead date of 2038-01-19.

<?php

function secs2date($secs,$date)
    {
    if (
$secs>2147472000)    //2038-01-19 expire dt
       
{
       
$date->setTimestamp(2147472000);
       
$s=$secs-2147472000;
       
$date->add(new DateInterval('PT'.$s.'S'));
        }
    else
       
$date->setTimestamp($secs);
    }

function
date2secs($date,$datebeg)
    {
   
$diff = $datebeg->diff($date);
   
$secs=$diff->format('%a') * (60*60*24);  //total days
   
$secs+=$diff->format('%h') * (60*60);     //hours
   
$secs+=$diff->format('%i') * 60;              //minutes
   
$secs+=$diff->format('%s');                     //seconds
   
return $secs;
    }

$datebeg = new DateTime('1970-01-01');
$date=new dateTime();

$secs=2017472000//2033-12-06 08:53:20
secs2date($secs,$date);
$dt=$date->format('Y-m-d H:i:s');
echo
$dt."<br>";
$sec2=date2secs($date,$datebeg);
echo
'(1) ',$sec2,'***',$secs,'<br>';

$secs=2397472000; //2045-12-21 12:26:40
secs2date($secs,$date);
$dt=$date->format('Y-m-d H:i:s');
echo
$dt."<br>";
$sec2=date2secs($date,$datebeg);
echo
'(2) ',$sec2,'***',$secs,'<br>';
?>
up
0
linblow at hotmail dot fr
3 years ago
If your PHP version is lower than 5.3 then you can use this class to be able to use the functions "setTimestamp" and "getTimestamp":

<?php

class MyDateTime extends DateTime
{
    public function
setTimestamp( $timestamp )
    {
       
$date = getdate( ( int ) $timestamp );
       
$this->setDate( $date['year'] , $date['mon'] , $date['mday'] );
       
$this->setTime( $date['hours'] , $date['minutes'] , $date['seconds'] );
    }
   
    public function
getTimestamp()
    {
        return
$this->format( 'U' );
    }
}

$date = new MyDateTime();
$date->setTimestamp( $someTimestamp );

echo
$date->format( 'd/m/Y H:i:s' );

?>
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