The DateTime class

(PHP 5 >= 5.2.0, PHP 7)

Introduction

Representation of date and time.

DateTime implements DateTimeInterface {

/* Inherited constants */

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

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

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

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

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

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

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

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

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

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

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

const string DateTimeInterface::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 [, int $microseconds = 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 )

}

Version	Description
7.2.0	The class constants of DateTime are now defined on DateTimeInterface.
7.0.0	Added constants: DATE_RFC3339_EXTENDED and DateTime::RFC3339_EXTENDED.
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 ==).

DateTime::add — Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object
DateTime::__construct — Returns new DateTime object
DateTime::createFromFormat — Parses a time string according to a specified format
DateTime::getLastErrors — Returns the warnings and errors
DateTime::modify — Alters the timestamp
DateTime::__set_state — The __set_state handler
DateTime::setDate — Sets the date
DateTime::setISODate — Sets the ISO date
DateTime::setTime — Sets the time
DateTime::setTimestamp — Sets the date and time based on an Unix timestamp
DateTime::setTimezone — Sets the time zone for the DateTime object
DateTime::sub — Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object