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Date and Time Functions

Introduktion

These functions allow you to get the date and time from the server where your PHP scripts are running. You can use these functions to format the date and time in many different ways.

Note: Please keep in mind that these functions are dependent on the locale settings of your server. Make sure to take daylight saving time (use e.g. $date = strtotime('+7 days', $date) and not $date += 7*24*60*60) and leap years into consideration when working with these functions.

Note: The timezones referenced in this section can be found in the List of Supported Timezones.

Systemkrav

Ingen eksterne libraries er nødvendige for at kompilere denne udvidelse.

Installation

Der er ingen installation nødvendig for at kunne bruge disse funktioner; de er en del af PHP kernen.

Note: The latest version of the timezone database can be installed via PECL's » timezonedb. For Windows users, a pre-compiled DLL can be downloaded from the PECL4Win site: » php_timezonedb.dll.

Runtime Konfiguration

Virkemåden af disse funktioner er berørt af indstillinger i php.ini.

Date/Time Configuration Options
Name Default Changeable Changelog
date.default_latitude "31.7667" PHP_INI_ALL Available since PHP 5.0.0.
date.default_longitude "35.2333" PHP_INI_ALL Available since PHP 5.0.0.
date.sunrise_zenith "90.583333" PHP_INI_ALL Available since PHP 5.0.0.
date.sunset_zenith "90.583333" PHP_INI_ALL Available since PHP 5.0.0.
date.timezone "" PHP_INI_ALL Available since PHP 5.1.0.
For flere detaljer og definationer af PHP_INI_* constanterne, se ini_set() dokumentation.

Her er en kort forklaring på konfigurations-direktiverne.

date.default_latitude float

The default latitude.

date.default_longitude float

The default longitude.

date.sunrise_zenith float

The default sunrise zenith.

date.sunset_zenith float

The default sunset zenith.

date.timezone string

The default timezone used by all date/time functions if the TZ environment variable isn't set. The precedence order is described in the date_default_timezone_get() page. See List of Supported Timezones for a list of supported timezones.

Note: The first four configuration options are currently only used by date_sunrise() and date_sunset().

Ressourcetyper

Denne udvidelse har ingen ressourcetyper defineret.

Foruddefinerede Konstanter

The following constants are defined since PHP 5.1.1 and they offer standard date representations, which can be used along with the date format functions (like date()).

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

Following constants exists since PHP 5.1.2 and specify a format returned by functions date_sunrise() and date_sunset().

SUNFUNCS_RET_TIMESTAMP (integer)
Timestamp
SUNFUNCS_RET_STRING (integer)
Hours:minutes (example: 08:02)
SUNFUNCS_RET_DOUBLE (integer)
Hours as floating point number (example 8.75)

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