DateTime::format

DateTimeImmutable::format

DateTimeInterface::format

date_format

(PHP 5 >= 5.2.1, PHP 7, PHP 8)

DateTime::format -- DateTimeImmutable::format -- DateTimeInterface::format -- date_format — Devuelve la fecha formateada según el formato dado

Descripción

Estilo orientado a objetos

public DateTime::format(string $format): string

public DateTimeImmutable::format(string $format): string

public DateTimeInterface::format(string $format): string

Estilo por procedimientos

date_format(DateTimeInterface $object, string $format): string

Devuelve la fecha formateada según el formato dado.

Parámetros

object: Solamente para el estilo por procedimientos: Un objeto DateTime devuelto por date_create()
format: Formato aceptado por date().

Valores devueltos

Devuelve la fecha formateada en caso de éxito o false en caso de error.

Ejemplos

Ejemplo #1 Ejemplo de DateTime::format()

Estilo orientado a objetos

<?php
$date = new DateTime('2000-01-01');
echo $date->format('Y-m-d H:i:s');
?>

Estilo por procedimientos

<?php
$date = date_create('2000-01-01');
echo date_format($date, 'Y-m-d H:i:s');
?>

El resultado del ejemplo sería:

2000-01-01 00:00:00

Notas

Este método no usa configuraciones regionales. Todas las salidas están en inglés.

Ver también

date() - Dar formato a la fecha/hora local

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User Contributed Notes 10 notes

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112

craig dot constable at gmail dot com ¶

12 years ago


Using a datetime field from a mysql database e.g. "2012-03-24 17:45:12"

<?php

$result = mysql_query("SELECT `datetime` FROM `table`");
$row = mysql_fetch_row($result);
$date = date_create($row[0]);

echo date_format($date, 'Y-m-d H:i:s');
#output: 2012-03-24 17:45:12

echo date_format($date, 'd/m/Y H:i:s');
#output: 24/03/2012 17:45:12

echo date_format($date, 'd/m/y');
#output: 24/03/12

echo date_format($date, 'g:i A');
#output: 5:45 PM

echo date_format($date, 'G:ia');
#output: 05:45pm

echo date_format($date, 'g:ia \o\n l jS F Y');
#output: 5:45pm on Saturday 24th March 2012

?>

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soul dot enforcer at gmail dot com ¶

10 years ago


For full reference of the supported format character and results,
see the documentation of date() :
http://www.php.net/manual/en/function.date.php

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mesa dot fx at gmail dot com ¶

6 years ago


There is a bit confusing logic may appear using year week number:

<?php
echo (new \DateTime("2018-12-31 13:05:21"))->format("YW") . PHP_EOL;
?>

will output 201801, not 201901 nor 201852, because of strange ISO_8601-2004 standard: the  first  calendar  week  of  a  year  is  that  one  which  includes  the  first  Thursday  of  that  year, so this date (it is Monday) do belong to the first week of 2019 (this is why 'W' format gives 01), but internal timestamp is of 2018 (and 'Y' format obey this), therefore getting us unexpected result of 201801. So be careful when using this output with something important (i know projects where this was used to form MySQL partitions).

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sparcbr at gmail dot com ¶

4 years ago


To add literal characteres youi can escape with backslash (\):

$date = new DateTime();
echo $date->format('Ymd\Thms');

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daysnine at gmail dot com ¶

11 years ago


Seems like datetime::format does not really support microseconds as the documentation under date suggest it will.

Here is some code to generate a datetime with microseconds and timezone:

private function udate($format = 'u', $utimestamp = null) {
        if (is_null($utimestamp))
            $utimestamp = microtime(true);

        $timestamp = floor($utimestamp);
        $milliseconds = round(($utimestamp - $timestamp) * 1000000);

        return date(preg_replace('`(?<!\\\\)u`', $milliseconds, $format), $timestamp);
    }

echo udate('Y-m-d H:i:s.u T');
// Will output something like: 2014-01-01 12:20:24.42342 CET

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-4

tuxedobob ¶

4 years ago


I'm actually not sure whether this is a bug, but here's something that tripped me up on PHP 7.3.

I have a date that looks like this: 'November 3, 2020 11:13 (CST)'

I tried to format it using this format string: 'F j, Y H:i (T)'

That didn't work.

What *did* work was the format string without the parentheses: 'F j, Y H:i T'. 

This string also parsed the timezone when the time zone *didn't* have parentheses surrounding it: 'November 3, 2020 11:13 CST'.

It seems as though the T token is a little greedy with surrounding parentheses, so don't include them in your format string.

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-15

ca at agercon dot dk ¶

13 years ago


The date_format can be use to get the last day of February:

<?php 

function last_day_of_feb ($year) {
# The 0th day of a month is the same as the last day of the month before
        $ultimo_feb_str = $year . "-03-00"; 
        $ultimo_feb_date = date_create($ultimo_feb_str);
        $return = date_format($ultimo_feb_date, "Y-m-d");
        return $return;
}

echo last_day_of_feb(2011) . "\n"; # 2011-02-28
echo last_day_of_feb(2012) . "\n"; # 2011-02-29

?>

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-32

prussell at cloudworksconsulting dot com ¶

10 years ago


The udate function is a great start, but the formatting of the milliseconds is a little off. If it is within the first 100000 microseconds then the string will be less than 6 characters, so 0.012435 will appear as 0.12345. The revision below fixes this.

function udate($strFormat = 'u', $uTimeStamp = null)
{

    // If the time wasn't provided then fill it in
    if (is_null($uTimeStamp))
    {
        $uTimeStamp = microtime(true);
    }

    // Round the time down to the second
    $dtTimeStamp = floor($uTimeStamp);

    // Determine the millisecond value
    $intMilliseconds = round(($uTimeStamp - $dtTimeStamp) * 1000000);
    // Format the milliseconds as a 6 character string
    $strMilliseconds = str_pad($intMilliseconds, 6, '0', STR_PAD_LEFT);

    // Replace the milliseconds in the date format string
    // Then use the date function to process the rest of the string
    return date(preg_replace('`(?<!\\\\)u`', $strMilliseconds, $strFormat), $dtTimeStamp);
}

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-19

info at ibusweb dot com ¶

5 years ago


$saved_time="2019-03-09 14:25:20";
    $formated_saved_time = new DateTime($saved_time);
    $current_time = new DateTime();
    $interval = $current_time->diff($formated_saved_time);
  
      if (!empty($interval->format('%a'))){
       $time_difference=$interval->format('%a days ago');
        } elseif ($formated_saved_time->format('d') != $current_time->format('d')){
             $time_difference="yesterday";
             }elseif (!empty($interval->format('%h'))){
                     $time_difference=$interval->format('%h hr, %i min ago');
                     } elseif (!empty($interval->format('%i'))){
                              $time_difference=$interval->format('%i min ago');
                              } elseif (!empty($interval->format('%s'))){
                                $time_difference=$interval->format('%s sec ago');
  } 

output ----- posted 4 hr, 12 min ago at 2019-03-09 14:25:20

see the code in action here 
https://eval.in/1081921

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-55

chris at codewiz dot biz ¶

10 years ago


I believe this is a bug but its note-worthy if it is intended (I am using PHP 5.5.3).

$ php --version

PHP Warning:  Module 'xdebug' already loaded in Unknown on line 0
PHP 5.5.3-1ubuntu2.1 (cli) (built: Dec 12 2013 04:24:35) 
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2013 Zend Technologies
    with Xdebug v2.2.3, Copyright (c) 2002-2013, by Derick Rethans
    with Zend OPcache v7.0.3-dev, Copyright (c) 1999-2013, by Zend Technologies

What is happening:

DateTime()->format() will modify the timezone. So do not expect the public date property to be returned (format mask applied) based on the current public timezone property. format will decide that when calling ->format() it will use the server timezone which eliminates all usefulness of ->setTimezone().

<?php
            $nowUtc = new \DateTime( 'now',  new \DateTimeZone( 'UTC' ) );
            echo '$nowUtc'.PHP_EOL;
            var_dump($nowUtc);
            $nowUtc = new \DateTime( 'now',  new \DateTimeZone( 'UTC' ) );
            echo '$nowUtc->format(\'Y-m-d h:i:s\')'.PHP_EOL;
            var_dump($nowUtc->format('Y-m-d h:i:s'));
            $nowUtc->setTimezone( new \DateTimeZone( 'Australia/Sydney' ) );
            echo '$nowUtc->setTimezone( new \DateTimeZone( \'Australia/Sydney\' ) )'.PHP_EOL;
            var_dump($nowUtc);
            echo '$nowUtc->format(\'Y-m-d h:i:s\')'.PHP_EOL;
            var_dump($nowUtc->format('Y-m-d h:i:s'));exit;
?>

outputs;

$nowUtc

object(DateTime)[2607]
  public 'date' => string '2014-02-13 02:42:48' (length=19)
  public 'timezone_type' => int 3
  public 'timezone' => string 'UTC' (length=3)

$nowUtc->format('Y-m-d h:i:s')

string '2014-02-13 02:42:48' (length=19)

$nowUtc->setTimezone( new \DateTimeZone( 'Australia/Sydney' ) )

object(DateTime)[2608]
  public 'date' => string '2014-02-13 13:42:48' (length=19)
  public 'timezone_type' => int 3
  public 'timezone' => string 'Australia/Sydney' (length=16)

$nowUtc->format('Y-m-d h:i:s')

string '2014-02-13 01:42:48' (length=19) // expected 2014-02-13 13:42:48 based on Australia/Sydney - what is 2014-02-13 01:42:48 from anyway!

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