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
?>
DateTime::format
DateTimeImmutable::format
DateTimeInterface::format
date_format
(PHP 5 >= 5.2.0, PHP 7)
DateTime::format -- DateTimeImmutable::format -- DateTimeInterface::format -- date_format — Returns date formatted according to given format
설명
객체 기반 형식
public string DateTime::format
( string
$format
)
public string DateTimeImmutable::format
( string
$format
)
public string DateTimeInterface::format
( string
$format
)절차식 형식
Returns date formatted according to given format.
인수
-
object -
절차식 전용: date_create()가 반환하는 DateTime 객체.
-
format -
Format accepted by date().
반환값
Returns the formatted date string on success실패 시 FALSE를 반환합니다.
예제
Example #1 DateTime::format() example
객체 기반 형식
<?php
$date = new DateTime('2000-01-01');
echo $date->format('Y-m-d H:i:s');
?>
절차식 형식
<?php
$date = date_create('2000-01-01');
echo date_format($date, 'Y-m-d H:i:s');
?>
위 예제의 출력:
2000-01-01 00:00:00
주의
This method does not use locales. All output is in English.
참고
- date() - 로컬 날짜/시간을 형식화합니다
add a note
User Contributed Notes 10 notes
craig dot constable at gmail dot com ¶
12 years ago
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
mesa dot fx at gmail dot com ¶
5 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).
sparcbr at gmail dot com ¶
4 years ago
To add literal characteres youi can escape with backslash (\):
$date = new DateTime();
echo $date->format('Ymd\Thms');
daysnine at gmail dot com ¶
11 years ago
Seems like datetime::format does not really support microseconds as the documentation under date suggest it will.
Here is some code to generate a datetime with microseconds and timezone:
private function udate($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), $timestamp);
}
echo udate('Y-m-d H:i:s.u T');
// Will output something like: 2014-01-01 12:20:24.42342 CET
tuxedobob ¶
4 years ago
I'm actually not sure whether this is a bug, but here's something that tripped me up on PHP 7.3.
I have a date that looks like this: 'November 3, 2020 11:13 (CST)'
I tried to format it using this format string: 'F j, Y H:i (T)'
That didn't work.
What *did* work was the format string without the parentheses: 'F j, Y H:i T'.
This string also parsed the timezone when the time zone *didn't* have parentheses surrounding it: 'November 3, 2020 11:13 CST'.
It seems as though the T token is a little greedy with surrounding parentheses, so don't include them in your format string.
ca at agercon dot dk ¶
13 years ago
The date_format can be use to get the last day of February:
<?php
function last_day_of_feb ($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 $return;
}
echo last_day_of_feb(2011) . "\n"; # 2011-02-28
echo last_day_of_feb(2012) . "\n"; # 2011-02-29
?>
prussell at cloudworksconsulting dot com ¶
10 years ago
The udate function is a great start, but the formatting of the milliseconds is a little off. If it is within the first 100000 microseconds then the string will be less than 6 characters, so 0.012435 will appear as 0.12345. The revision below fixes this.
function udate($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);
}
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
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!
