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Itachi261092/script.php

Created February 21, 2018 13:41
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script.php
$R = 6371; // Earth radius in km
$dLat = (($q[0] - $p[0]) * pi() / 180);
$dLon = (($q[1] - $p[1]) * pi() / 180);
$a = sin($dLat / 2) * sin($dLat / 2) +
cos($p[0] * pi() / 180) * cos($q[0] * pi() / 180) *
sin($dLon / 2) * sin($dLon / 2);
$c = 2 * atan2(sqrt($a), sqrt(1 - $a));
return $R * $c;
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