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run code in 150+ php & hhvm versions
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<?php function distancia($lat1, $lon1, $lat2, $lon2, $unit) { $theta = $lon1 - $lon2; $dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) + cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta)); $dist = acos($dist); $dist = rad2deg($dist); $miles = $dist * 1.1515; $unit = strtoupper($unit); if ($unit == "K") { return ($miles * 1.609344); } else if ($unit == "N") { return ($miles * 0.8684); } else { return $miles; } } // -12.971683, -38.460108 = bairro pernambues em salvador // -12.981290, -38.465043 = shopping iguatemi em salvador echo distancia(1, 1, 2, 2, "k") . " Km<br />";
Output for 4.3.0 - 7.1.0
2.6202977964312 Km<br />