DateTime::diff
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
?>
DateTime::format
date_format
(PHP 5 >= 5.2.0)
DateTime::format -- date_format — Devuelve la fecha formateada según el formato dado
Descripción
Estilo orientado a objetos
public string DateTime::format
( string
$format
)Estilo por procedimientos
Devuelve la fecha formateada según el formato dado.
Parámetros
-
object -
Estilo por procesos solamente: Un objeto DateTime es devuelto por date_create()
-
format -
Formato aceptado por date().
Valores devueltos
Devuelve la cadena de fecha formateada si se tuvo éxito o FALSE en caso de error.
Ejemplos
Ejemplo #1 Ejemplo de DateTime::format()
Estilo orientado a objetos
<?php
$fecha = new DateTime('2000-01-01');
echo $fecha->format('Y-m-d H:i:s');
?>
Estilo por procedimientos
<?php
$fecha = date_create('2000-01-01');
echo date_format($fecha, 'Y-m-d H:i:s');
?>
El resultado del ejemplo sería:
2000-01-01 00:00:00
Notas
Este método no utiliza regiones. Todas las salidas son en inglés.
Ver también
- date() - Dar formato a la fecha/hora local
add a note
User Contributed Notes
DateTime::format - [4 notes]
ca at agercon dot dk ¶
1 year ago
craig dot constable at gmail dot com ¶
1 year 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
?>
eggerjohansi at gmail dot com ¶
3 years ago
if you want to use e.g. german weekdays you could add the following class as a temporary solution...
<?php
class DateTimeGerman extends DateTime {
public function format($format) {
$english = array('Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday');
$german = array('Montag', 'Dienstag', 'Mittwoch', 'Donnerstag', 'Freitag', 'Samstag', 'Sonntag');
return str_replace($english, $german, parent::format($format));
}
}
?>
it hasn't anything to do with nice programming but it works if you construct a
<?php
$dt = new DateTimeGerman();
?>
instead of
<?php
$dt = new DateTime();
?>
James Meyer ¶
2 years ago
A note about version differences - the results of this function differ significantly from php 5.2.x to 5.3.x .
The 5.2 implementations will often parse to non-sensical values, such as:
1964/11-12: 1964/-99999/-99999
12/11-1964: -99999/12/11
12-31-1964: -99999/-99999/-99999
11121875: 1112/01/187
01321901: 0132/01/190
(this one makes sense, but was a poor guess)
31/12/1964: 1964/01/12
In 5.3+, these all come back as false, as I would expect. 5.2 was just a little optimistic about it's ability to parse dates, I guess.