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Free PHP Tutorials arrow PHP Tutorials and Examples arrow PHP

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)

  1. <?php
  2.  
  3. /* calculate the sunrise time for Lisbon, Portugal
  4. Latitude: 38.4 North
  5. Longitude: 9 West
  6. Zenith ~= 90
  7. offset: +1 GMT
  8. */
  9.  
  10. echo date("D M d Y"). ', sunrise time : ' .date_sunrise(time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, 1);
  11.  
  12. ?>
  13.  
  14. outputs: Mon Dec 20 2004, sunrise time : 08:54
  15.  
  16. <?php
  17.  
  18. /* calculate the sunset time for Lisbon, Portugal
  19. Latitude: 38.4 North
  20. Longitude: 9 West
  21. Zenith ~= 90
  22. offset: +1 GMT
  23. */
  24.  
  25. echo date("D M d Y"). ', sunset time : ' .date_sunset(time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, 1);
  26.  
  27. ?>
  28.  
  29. outputs: Mon Dec 20 2004, sunset time : 18:13

 
 

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