PHP Manual: Compound Formats

Compound Formats

This page describes the different compound date/time formats in a BNF-like syntax, that the DateTimeImmutable, DateTime, date_create, date_create_immutable, and strtotime parser understands.

To format DateTimeImmutable and DateTime objects, please refer to the documentation of the DateTimeInterface::format method.

**Used Symbols**
Description	Formats	Examples
`DD`	"0" [0-9] \| [1-2][0-9] \| "3" [01]	"02", "12", "31"
`doy`	"00"[1-9] \| "0"[1-9][0-9] \| [1-2][0-9][0-9] \| "3"[0-5][0-9] \| "36"[0-6]	"001", "012", "180", "350", "366"
`frac`	. [0-9]+	".21342", ".85"
`hh`	"0"?[1-9] \| "1"[0-2]	"04", "7", "12"
`HH`	[01][0-9] \| "2"[0-4]	"04", "07", "19"
`meridian`	[AaPp] .? [Mm] .? [\0\t ]	"A.m.", "pM", "am."
`ii`	[0-5]?[0-9]	"04", "8", "59"
`II`	[0-5][0-9]	"04", "08", "59"
`M`	'jan' \| 'feb' \| 'mar' \| 'apr' \| 'may' \| 'jun' \| 'jul' \| 'aug' \| 'sep' \| 'sept' \| 'oct' \| 'nov' \| 'dec'
`MM`	[0-1][0-9]	"00", "12"
`space`	[ \t]
`ss`	([0-5]?[0-9])\|60	"04", "8", "59", "60" (leap second)
`SS`	[0-5][0-9]	"04", "08", "59"
`W`	"0"[1-9] \| [1-4][0-9] \| "5"[0-3]	"05", "17", "53"
`tzcorrection`	"GMT"? [+-] `hh` ":"? `II`?	"+0400", "GMT-07:00", "-07:00"
`YY`	[0-9]{4}	"2000", "2008", "1978"

**Standards Formats**
Description	Examples
ATOM	"2022-06-02T16:58:35+00:00"
COOKIE	"Thursday, 02-Jun-2022 16:58:35 UTC"
ISO8601	"2022-06-02T16:58:35+0000"
» RFC 822	"Thu, 02 Jun 22 16:58:35 +0000"
» RFC 850	"Thursday, 02-Jun-22 16:58:35 UTC"
» RFC 1036	"Thu, 02 Jun 22 16:58:35 +0000"
» RFC 1123	"Thu, 02 Jun 2022 16:58:35 +0000"
» RFC 2822	"Thu, 02 Jun 2022 16:58:35 +0000"
» RFC 3339	"2022-06-02T16:58:35+00:00"
» RFC 3339 Extended	"2022-06-02T16:58:35.698+00:00"
» RFC 7231	"Thu, 02 Jun 2022 16:58:35 GMT"
RSS	"Thu, 02 Jun 2022 16:58:35 +0000"
W3C	"2022-06-02T16:58:35+00:00"

**Localized Notations**
Description	Format	Examples
Common Log Format	`dd` "/" `M` "/" `YY` : `HH` ":" `II` ":" `SS` `space` `tzcorrection`	"10/Oct/2000:13:55:36 -0700"
EXIF	`YY` ":" `MM` ":" `DD` " " `HH` ":" `II` ":" `SS`	"2008:08:07 18:11:31"
ISO year with ISO week	`YY` "-"? "W" `W`	"2008W27", "2008-W28"
ISO year with ISO week and day	`YY` "-"? "W" `W` "-"? [0-7]	"2008W273", "2008-W28-3"
MySQL	`YY` "-" `MM` "-" `DD` " " `HH` ":" `II` ":" `SS`	"2008-08-07 18:11:31"
PostgreSQL: Year with day-of-year	`YY` "."? `doy`	"2008.197", "2008197"
SOAP	`YY` "-" `MM` "-" `DD` "T" `HH` ":" `II` ":" `SS` `frac` `tzcorrection`?	"2008-07-01T22:35:17.02", "2008-07-01T22:35:17.03+08:00"
Unix Timestamp	"@" "-"? [0-9]+	"@1215282385"
Unix Timestamp with microseconds	"@" "-"? [0-9]+ "." [0-9]{0,6}	"@1607974647.503686"
XMLRPC	`YY` `MM` `DD` "T" `hh` ":" `II` ":" `SS`	"20080701T22:38:07", "20080701T9:38:07"
XMLRPC (Compact)	`YY` `MM` `DD` 't' `hh` `II` `SS`	"20080701t223807", "20080701T093807"
WDDX	`YY` "-" `mm` "-" `dd` "T" `hh` ":" `ii` ":" `ss`	"2008-7-1T9:3:37"

Note:
The "W" in the "ISO year with ISO week" and "ISO year with ISO week and day" formats is case-sensitive, you can only use the upper case "W".

The "T" in the SOAP, XMLRPC and WDDX formats is case-sensitive, you can only use the upper case "T".

The "Unix Timestamp" format sets the timezone to UTC.