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

发表日期：2021-07-01 08:55:27 | 来源： | | 浏览(658) 分类：Date/Time 函数

date_sun_info

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

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

说明

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

参数

timestamp: Unix timestamp.
latitude: Latitude in degrees.
longitude: Longitude in degrees.

返回值

Returns array on success 或者在失败时返回 false. The structure of the array is detailed in the following list:

sunrise: The timestamp of the sunrise (zenith angle = 90°35').
sunset: The timestamp of the sunset (zenith angle = 90°35').
transit: The timestamp 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.

范例

示例 #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";
}
?>

以上例程会输出：

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

示例 #2 Polar night

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

以上例程会输出：

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)
}

示例 #3 Midnight sun

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

以上例程会输出：

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)
}

参见

date_sunrise() - 返回给定的日期与地点的日出时间
date_sunset() - 返回给定的日期与地点的日落时间

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