Returns an array with information about sunset/sunrise and twilight begin/end

Descrierea

date_sun_info ( int $time , float $latitude , float $longitude ) : array

Parametri

time: Timestamp.
latitude: Latitude in degrees.
longitude: Longitude in degrees.

Valorile întoarse

Returns array on success sau FALSE în cazul eșecului. The structure of the array is detailed in the following list:

sunrise: The time of the sunrise (zenith angle = 90°35').
sunset: The time of the sunset (zenith angle = 90°35').
transit: The time when the sun is at its zenith, i.e. has reached its topmost point.
civil_twilight_begin: The start of the civil dawn (zenith angle = 96°). It ends at sunrise.
civil_twilight_end: The end of the civil dusk (zenith angle = 96°). It starts at sunset.
nautical_twilight_begin: The start of the nautical dawn (zenith angle = 102°). It ends at civil_twilight_begin.
nautical_twilight_end: The end of the nautical dusk (zenith angle = 102°). It starts at civil_twilight_end.
astronomical_twilight_begin: The start of the astronomical dawn (zenith angle = 108°). It ends at nautical_twilight_begin.
astronomical_twilight_end: The end of the astronomical dusk (zenith angle = 108°). It starts at nautical_twilight_end.

The values of the array elements are either UNIX timestamps, FALSE if the sun is below the respective zenith for the whole day, or TRUE if the sun is above the respective zenith for the whole day.

Istoricul schimbărilor

Versiune	Descriere
5.2.2	The order of `latitude` and `longitude` has been swapped.

Exemple

Example #1 A date_sun_info() example


<?php
$sun_info = date_sun_info(strtotime("2006-12-12"), 31.7667, 35.2333);
foreach ($sun_info as $key => $val) {
    echo "$key: " . date("H:i:s", $val) . "\n";
}
?>

Exemplul de mai sus va afișa:

sunrise: 05:52:11
sunset: 15:41:21
transit: 10:46:46
civil_twilight_begin: 05:24:08
civil_twilight_end: 16:09:24
nautical_twilight_begin: 04:52:25
nautical_twilight_end: 16:41:06
astronomical_twilight_begin: 04:21:32
astronomical_twilight_end: 17:12:00

Example #2 Polar night


<?php
var_dump(date_sun_info(strtotime("2017-12-21"), 90, 0));
?>

Exemplul de mai sus va afișa:

array(9) {
  ["sunrise"]=>
  bool(false)
  ["sunset"]=>
  bool(false)
  ["transit"]=>
  int(1513857490)
  ["civil_twilight_begin"]=>
  bool(false)
  ["civil_twilight_end"]=>
  bool(false)
  ["nautical_twilight_begin"]=>
  bool(false)
  ["nautical_twilight_end"]=>
  bool(false)
  ["astronomical_twilight_begin"]=>
  bool(false)
  ["astronomical_twilight_end"]=>
  bool(false)
}

Example #3 Midnight sun


<?php
var_dump(date_sun_info(strtotime("2017-06-21"), 90, 0));
?>

Exemplul de mai sus va afișa:

array(9) {
  ["sunrise"]=>
  bool(true)
  ["sunset"]=>
  bool(true)
  ["transit"]=>
  int(1498046510)
  ["civil_twilight_begin"]=>
  bool(true)
  ["civil_twilight_end"]=>
  bool(true)
  ["nautical_twilight_begin"]=>
  bool(true)
  ["nautical_twilight_end"]=>
  bool(true)
  ["astronomical_twilight_begin"]=>
  bool(true)
  ["astronomical_twilight_end"]=>
  bool(true)
}

A se vedea și

date_sunrise() - Returns time of sunrise for a given day and location
date_sunset() - Returns time of sunset for a given day and location