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PHP Basic

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PHP Data Types

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PHP Advanced

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PHP Reference

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Text lesson

date_sunrise()

Example

Retrieve the sunrise time for Lisbon, Portugal, for today.

<?php
// Lisbon, Portugal:
// Latitude: 38.4 North, Longitude: 9 West
// Zenith ~= 90, offset: +1 GMT

echo(“Lisbon, Portugal: Date: “ . date(“D M d Y”));
echo(“<br>Sunrise time: “);
echo(date_sunrise(time(),SUNFUNCS_RET_STRING,38.4,-9,90,1));
?>

Definition and Usage

The date_sunrise() function returns the sunrise time for a given day and location.

Tip: Use the date_sunset() function to obtain the sunset time for a specific day and location.

Syntax

date_sunrise(timestamp, format, latitude, longitude, zenith, gmtoffset)

Parameter Values

Parameter	Description
timestamp	Required. Specifies the timestamp of the day for which the sunrise time is calculated.
format	Optional. Specifies the format of the returned result: SUNFUNCS_RET_STRING (returns the result as a string, e.g., 16:46) (default) SUNFUNCS_RET_DOUBLE (returns the result as a float, e.g., 16.78243132) SUNFUNCS_RET_TIMESTAMP (returns the result as an integer timestamp, e.g., 1095034606)
latitude	Optional. Specifies the latitude of the location. Defaults to North; for Southern Hemisphere, use a negative value.
longitude	Optional. Specifies the longitude of the location. Defaults to East; for Western Hemisphere, use a negative value.
zenith	Optional. Defaults to date.sunrise_zenith.
gmtoffset	Optional. Specifies the difference in hours between GMT and local time.

Technical Details

Return Value:	Returns the sunrise time in the specified format on success; FALSE on failure.
PHP Version:	5+
PHP Changelog:	In PHP 5.1, this function now triggers E_STRICT and E_NOTICE time zone errors.