PHP Tutorial - PHP date_sunset() Function
Definition
The date_sunset() function returns the sunset time for a specified day and location.
date_sunrise() function returns the sunrise time for a specified day and location.
Syntax
PHP date_sunset() Function has the following syntax.
date_sunset(timestamp,format,latitude,longitude,zenith,gmtoffset);Parameter
| Parameter | Is Required | Description |
|---|---|---|
| timestamp | Required. | Timestamp of the day from which the sunset time is taken |
| format | Optional. | Format to return the result: |
| latitude | Optional. | Latitude of the location. Defaults to North. To specify a value for South, pass in a negative value |
| longitude | Optional. | Longitude of the location. Defaults to East. To specify a value for West, pass in a negative value |
| zenith | Optional. | Defaults to date.sunset_zenith |
| gmtoffset | Optional. | Difference between GMT and local time in hours |
Format has the following available value.
| Value | Description |
|---|---|
| SUNFUNCS_RET_STRING | returns the result as string. e.g. 15:46 (This is default) |
| SUNFUNCS_RET_DOUBLE | returns the result as float. e.g. 12.123456 |
| SUNFUNCS_RET_TIMESTAMP | returns the result as integer (timestamp). e.g. 1211233211) |
Return
PHP date_sunset() Function returns the time of the sunset, in the specified format, on success. FALSE on failure.
Example
Return the sunset time for Lisbon, Portugal today:
<?php
echo("Lisbon, Portugal: Date: " . date("D M d Y"));
echo("<br>Sunset time: ");
echo(date_sunset(time(),SUNFUNCS_RET_STRING,18.1,-9,80,1));
?>
The code above generates the following result.
