The DateTimeInterface interface

(PHP 5 >= 5.5.0, PHP 7)

Wstęp

DateTimeInterface is meant so that both DateTime and DateTimeImmutable can be type hinted for. It is not possible to implement this interface with userland classes.

Krótki opis klasy

DateTimeInterface {

/* Stałe */

const string ATOM = "Y-m-d\TH:i:sP" ;

const string COOKIE = "l, d-M-Y H:i:s T" ;

const string ISO8601 = "Y-m-d\TH:i:sO" ;

const string RFC822 = "D, d M y H:i:s O" ;

const string RFC850 = "l, d-M-y H:i:s T" ;

const string RFC1036 = "D, d M y H:i:s O" ;

const string RFC1123 = "D, d M Y H:i:s O" ;

const string RFC7231 = "D, d M Y H:i:s \G\M\T" ;

const string RFC2822 = "D, d M Y H:i:s O" ;

const string RFC3339 = "Y-m-d\TH:i:sP" ;

const string RFC3339_EXTENDED = "Y-m-d\TH:i:s.vP" ;

const string RSS = "D, d M Y H:i:s O" ;

const string W3C = "Y-m-d\TH:i:sP" ;

/* Metody */

public diff ( DateTimeInterface $datetime2 [, bool $absolute = FALSE ] ) : DateInterval

public format ( string $format ) : string

public getOffset ( void ) : int

public getTimestamp ( void ) : int

public getTimezone ( void ) : DateTimeZone

public __wakeup ( void )

}

Stałe predefiniowane

DateTimeInterface::ATOM
DATE_ATOM: Atom (example: 2005-08-15T15:52:01+00:00)
DateTimeInterface::COOKIE
DATE_COOKIE: HTTP Cookies (example: Monday, 15-Aug-2005 15:52:01 UTC)
DateTimeInterface::ISO8601
DATE_ISO8601: ISO-8601 (example: 2005-08-15T15:52:01+0000)
Informacja: This format is not compatible with ISO-8601, but is left this way for backward compatibility reasons. Use DateTime::ATOM or DATE_ATOM for compatibility with ISO-8601 instead.
DateTimeInterface::RFC822
DATE_RFC822: RFC 822 (example: Mon, 15 Aug 05 15:52:01 +0000)
DateTimeInterface::RFC850
DATE_RFC850: RFC 850 (example: Monday, 15-Aug-05 15:52:01 UTC)
DateTimeInterface::RFC1036
DATE_RFC1036: RFC 1036 (example: Mon, 15 Aug 05 15:52:01 +0000)
DateTimeInterface::RFC1123
DATE_RFC1123: RFC 1123 (example: Mon, 15 Aug 2005 15:52:01 +0000)
DateTimeInterface::RFC7231
DATE_RFC7231: RFC 7231 (since PHP 7.0.19 and 7.1.5) (example: Sat, 30 Apr 2016 17:52:13 GMT)
DateTimeInterface::RFC2822
DATE_RFC2822: RFC 2822 (example: Mon, 15 Aug 2005 15:52:01 +0000)
DateTimeInterface::RFC3339
DATE_RFC3339: Same as DATE_ATOM (since PHP 5.1.3)
DateTimeInterface::RFC3339_EXTENDED
DATE_RFC3339_EXTENDED: RFC 3339 EXTENDED format (since PHP 7.0.0) (example: 2005-08-15T15:52:01.000+00:00)
DateTimeInterface::RSS
DATE_RSS: RSS (example: Mon, 15 Aug 2005 15:52:01 +0000)
DateTimeInterface::W3C
DATE_W3C: World Wide Web Consortium (example: 2005-08-15T15:52:01+00:00)

Rejestr zmian

Wersja	Opis
7.2.0	The class constants of DateTime are now defined on DateTimeInterface.
5.5.8	Trying to implement DateTimeInterface raises a fatal error now. Formerly implementing the interface didn't raise an error, but the behavior was erroneous.

Spis treści

DateTime::diff — Returns the difference between two DateTime objects
DateTime::format — Returns date formatted according to given format
DateTime::getOffset — Returns the timezone offset
DateTime::getTimestamp — Gets the Unix timestamp
DateTime::getTimezone — Return time zone relative to given DateTime
DateTime::__wakeup — The __wakeup handler

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User Contributed Notes 1 note

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divinity76 at gmail dot com ¶

2 years ago


if you want to know what all the constants looks like, try

<?php
$constants= (new ReflectionClass("DateTimeInterface"))->getConstants();
foreach($constants as $name => $format){
    echo "{$name}: " . date($format, 0) . "\n";
}
?>

in php 8.0.3 it prints:

ATOM: 1970-01-01T01:00:00+01:00
COOKIE: Thursday, 01-Jan-1970 01:00:00 CET
ISO8601: 1970-01-01T01:00:00+0100
RFC822: Thu, 01 Jan 70 01:00:00 +0100
RFC850: Thursday, 01-Jan-70 01:00:00 CET
RFC1036: Thu, 01 Jan 70 01:00:00 +0100
RFC1123: Thu, 01 Jan 1970 01:00:00 +0100
RFC7231: Thu, 01 Jan 1970 01:00:00 GMT
RFC2822: Thu, 01 Jan 1970 01:00:00 +0100
RFC3339: 1970-01-01T01:00:00+01:00
RFC3339_EXTENDED: 1970-01-01T01:00:00.000+01:00
RSS: Thu, 01 Jan 1970 01:00:00 +0100
W3C: 1970-01-01T01:00:00+01:00

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