Description

mixed date_sunrise ( int timestamp [, int format [, float latitude [, float longitude [, float zenith [, float gmt_offset]]]]] )

- date_sunrise() returns the sunrise time for a given day (specified as a timestamp) and location. The latitude, longitude and zenith parameters default to the date.default_latitude, date.default_longitude and date.sunrise_zenith configuration options, respectively.
- The latitude defaults to North. So, if you want to specify a South value, you must pass a negative value. The same note applies to longitude, which defaults to East.
- The gmt_offset parameter is specified in hours.

Таблица 1. format constants

constant	description	example
SUNFUNCS_RET_STRING	returns the sunset time as string	16:46
SUNFUNCS_RET_DOUBLE	returns the result as float	16.78243132
SUNFUNCS_RET_TIMESTAMP	returns the sunset time as an integer (timestamp)	1095034606

-

Пример 1. date_sunrise() example

<?php /* calculate the sunrise time for Lisbon, Portugal Latitude: 38.4 North Longitude: 9 West Zenith ~= 90 offset: +1 GMT */ echo date("D M d Y"). ', sunrise time : ' .date_sunrise(time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, 1); ?>

Результатом выполнения данного примера
будет что-то подобное:

Mon Dec 20 2004, sunrise time : 08:54

date_default_timezone_set

date_sunset 22222