The DateTime class

(PHP 5 >= 5.2.0)

Introduction

Representation of date and time.

Class synopsis

DateTime implements DateTimeInterface {
/* Constants */
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 RFC2822 = "D, d M Y H:i:s O" ;
const string RFC3339 = "Y-m-d\TH:i:sP" ;
const string RSS = "D, d M Y H:i:s O" ;
const string W3C = "Y-m-d\TH:i:sP" ;
/* Methods */
public __construct ([ string $time = "now" [, DateTimeZone $timezone = NULL ]] )
public DateTime add ( DateInterval $interval )
public static DateTime createFromFormat ( string $format , string $time [, DateTimeZone $timezone ] )
public static array getLastErrors ( void )
public DateTime modify ( string $modify )
public static DateTime __set_state ( array $array )
public DateTime setDate ( int $year , int $month , int $day )
public DateTime setISODate ( int $year , int $week [, int $day = 1 ] )
public DateTime setTime ( int $hour , int $minute [, int $second = 0 ] )
public DateTime setTimestamp ( int $unixtimestamp )
public DateTime setTimezone ( DateTimeZone $timezone )
public DateTime sub ( DateInterval $interval )
public DateInterval diff ( DateTimeInterface $datetime2 [, bool $absolute = false ] )
public string format ( string $format )
public int getOffset ( void )
public int getTimestamp ( void )
public DateTimeZone getTimezone ( void )
public __wakeup ( void )
}

Predefined Constants

DateTime::ATOM
DATE_ATOM
Atom (example: 2005-08-15T15:52:01+00:00)
DateTime::COOKIE
DATE_COOKIE
HTTP Cookies (example: Monday, 15-Aug-2005 15:52:01 UTC)
DateTime::ISO8601
DATE_ISO8601
ISO-8601 (example: 2005-08-15T15:52:01+0000)
DateTime::RFC822
DATE_RFC822
RFC 822 (example: Mon, 15 Aug 05 15:52:01 +0000)
DateTime::RFC850
DATE_RFC850
RFC 850 (example: Monday, 15-Aug-05 15:52:01 UTC)
DateTime::RFC1036
DATE_RFC1036
RFC 1036 (example: Mon, 15 Aug 05 15:52:01 +0000)
DateTime::RFC1123
DATE_RFC1123
RFC 1123 (example: Mon, 15 Aug 2005 15:52:01 +0000)
DateTime::RFC2822
DATE_RFC2822
RFC 2822 (example: Mon, 15 Aug 2005 15:52:01 +0000)
DateTime::RFC3339
DATE_RFC3339
Same as DATE_ATOM (since PHP 5.1.3)
DateTime::RSS
DATE_RSS
RSS (example: Mon, 15 Aug 2005 15:52:01 +0000)
DateTime::W3C
DATE_W3C
World Wide Web Consortium (example: 2005-08-15T15:52:01+00:00)

Changelog

Version Description
5.5.0 The class now implements DateTimeInterface.
5.4.24 The COOKIE constant was changed to reflect RFC 1036 using a four digit year rather than a two digit year (RFC 850) as prior versions.
5.2.2 DateTime object comparison with the comparison operators changed to work as expected. Previously, all DateTime objects were considered equal (using ==).

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