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PHP date_sunset() 函数用法及示例

PHP Date & Time 函数手册

date_sunset()函数返回给定日期/地点的日落时间。

定义和用法

date_sunset()函数接受表示给定一天的时间戳，并返回该特定日期的日落时间。

语法

date_sunset($timestamp,　[$format,　$latitude,　$longitude,　$zenith,　$gmtoffset])

参数

序号参数及说明
1

timestamp (必需)

这指定一个时间戳。

2

format (可选)

这指定了您需要使用结果值的格式。您可以传递三个常量作为该参数的值；

SUNFUNCS_RET_STRING（,, Integer.

3

latitude (optional)

By default, this option specifies the latitude of a location, which specifies the north direction. To specify the latitude value of the south, it must be passed as a negative value.

4

longitude (optional)

By default, it specifies the longitude of a location, which specifies the east direction. To specify the longitude value of the west, it must be passed as a negative value.

5

zenith (optional)

This specifies the zenith value. This specifies the angle between the line perpendicular to the Earth's surface and the center of the sun.

6

gmtoffset (optional)

This specifies the time difference between GMT and local time (in hours).

Return value

The date_sunset() function returns the sunset time in the required format. If it fails, it will return a boolean valuefalse.

PHP version

This function was originally introduced in PHP 5. Introduced in version 0.0 and available in all higher versions.

Online example

The following example demonstratesdate_sunset()Function usage-

<?php
　　　$sun_info = date_sunset("02-17-2012");
　　　print_r($sun_info);
?>
Test and see‹/›

Output result

14:46

Online example

Now, to call this function, you must pass the latitude and longitude values. If you want to pass latitude and longitude values, you must also pass the required format values-

<?php
　　　$sun_info = date_sunset("02-03-2020", SUNFUNCS_RET_STRING,　23.4,　-25);
　　　print_r("Sunset Time: ".$sun_info);
?>
Test and see‹/›

Output result

Sunset Time:　19:05

Online example

The following example verifies the case without sunset-

<?php
　　　$sun_info = date_sunset("25-12-2016", SUNFUNCS_RET_STRING,　69,　41);
　　　print("Sunset Time: ".$sun_info);
　　　print("\n");
　　　var_dump($sun_info);
?>
Test and see‹/›

Output result

Sunset Time:
bool(false)

Online example

<?php
　　　echo("Date: ".date("D M d Y"));
　　　echo("\n");
　　　echo("Sunset time: ");
　　　echo(date_sunset(time(), SUNFUNCS_RET_STRING,38.4,-9,90,1));
?>
Test and see‹/›

Output result

Date: Thu May 07　2020
Sunset time:　20:30
Funções Directory PHPFunções Date & Time PHP