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19 lines
514 B
19 lines
514 B
<?php
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public static function distance($lat1, $lng1, $lat2, $lng2) {
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$earth_radius = 6378137;
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$rlo1 = deg2rad($lng1);
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$rla1 = deg2rad($lat1);
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$rlo2 = deg2rad($lng2);
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$rla2 = deg2rad($lat2);
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$dlo = ($rlo2 - $rlo1) / 2;
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$dla = ($rla2 - $rla1) / 2;
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$a = (sin($dla) * sin($dla)) + cos($rla1) * cos($rla2) * (sin($dlo) * sin($dlo));
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$d = 2 * atan2(sqrt($a), sqrt(1 - $a));
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return ($earth_radius * $d);
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}
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echo round(distance(48.86417880,2.34250440,43.6008177,3.8873392), 3);
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?>
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