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DATE_SUNRISE(3) 1 DATE_SUNRISE(3)
date_sunrise - Returns time of sunrise for a given day and location
SYNOPSIS
mixed date_sunrise (int $timestamp, [int $format = SUNFUNCS_RET_STRING], [float $latitude = ini_get("date.default_latitude")], [float
$longitude = ini_get("date.default_longitude")], [float $zenith = ini_get("date.sunrise_zenith")], [float $gmt_offset])
DESCRIPTION
date_sunrise(3) returns the sunrise time for a given day (specified as a $timestamp) and location.
PARAMETERS
o $timestamp
- The $timestamp of the day from which the sunrise time is taken.
o $format
-
$format constants
+-----------------------+-------------------------------------------+
| constant | |
| | |
| | description |
| | |
| | example |
| | |
+-----------------------+-------------------------------------------+
| SUNFUNCS_RET_STRING | |
| | |
| | returns the result as string |
| | |
| | 16:46 |
| | |
| SUNFUNCS_RET_DOUBLE | |
| | |
| | returns the result as float |
| | |
| | 16.78243132 |
| | |
|SUNFUNCS_RET_TIMESTAMP | |
| | |
| | returns the result as integer (timestamp) |
| | |
| | 1095034606 |
| | |
+-----------------------+-------------------------------------------+
o $latitude
- Defaults to North, pass in a negative value for South. See also: date.default_latitude
o $longitude
- Defaults to East, pass in a negative value for West. See also: date.default_longitude
o $zenith
- Default: date.sunrise_zenith
o $gmtoffset
- Specified in hours.
RETURN VALUES
Returns the sunrise time in a specified $format on success or FALSE on failure.
ERRORS
/EXCEPTIONS
Every call to a date/time function will generate a E_NOTICE if the time zone is not valid, and/or a E_STRICT or E_WARNING message if using
the system settings or the $TZ environment variable. See also date_default_timezone_set(3)
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.1.0 | |
| | |
| | Now issues the E_STRICT and E_NOTICE time zone |
| | errors. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
date_sunrise(3) 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);
?>
The above example will output something similar to:
Mon Dec 20 2004, sunrise time : 08:54
SEE ALSO
date_sunset(3).
PHP Documentation Group DATE_SUNRISE(3)