14 lines
541 B
PHP
14 lines
541 B
PHP
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<?php
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function lat_long_dist_of_two_points($latitudeFrom, $longitudeFrom, $latitudeTo, $longitudeTo){
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$pi = pi();
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$x = sin($latitudeFrom * $pi/180) *
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sin($latitudeTo * $pi/180) +
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cos($latitudeFrom * $pi/180) *
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cos($latitudeTo * $pi/180) *
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cos(($longitudeTo * $pi/180) - ($longitudeFrom * $pi/180));
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$x = atan((sqrt(1 - pow($x, 2))) / $x);
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return abs((1.852 * 60.0 * (($x/$pi) * 180)) / 1.609344);
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}
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// Distance from New York to London
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echo lat_long_dist_of_two_points(40.7127, 74.0059, 51.5072, 0.1275).' mi'."\n";
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?>
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