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Calculating time of sunrise / sunset for location with date_sunrise / date_sunset |
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Built-in function calculates the time of sunset and sunrise with
latitude, longitude, zenith, and GMT offset. Added in PHP 5. (Credit:
http://www.php.net/manual/en/function.date-sunset.php under ODL1.0)
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<?php
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/* calculate the sunrise time for Lisbon, Portugal
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Latitude: 38.4 North
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Longitude: 9 West
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Zenith ~= 90
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offset: +1 GMT
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*/
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echo date("D M d Y"). ', sunrise time : ' .date_sunrise (time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, 1);
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?>
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outputs: Mon Dec 20 2004, sunrise time : 08:54
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<?php
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/* calculate the sunset time for Lisbon, Portugal
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Latitude: 38.4 North
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Longitude: 9 West
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Zenith ~= 90
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offset: +1 GMT
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*/
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echo date("D M d Y"). ', sunset time : ' .date_sunset (time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, 1);
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?>
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outputs: Mon Dec 20 2004, sunset time : 18:13
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