Runtime Configuration

The behaviour of these functions is affected by settings in 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 further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

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. Prior to PHP 5.4.0, this would only work if the TZ environment variable was not set. The precedence order for which timezone is used if none is explicitly mentioned 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.