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gps coordinattes distance calculation

Abhijith answered on May 6, 2024 Popularity 2/10 Helpfulness 1/10

answer gps coordinattes distance calculation

gps coordinattes distance calculation

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<?php
/**
 * Calculate the great-circle distance between two points using the Haversine formula.
 *
 * @param float $lat1 Latitude of the first point.
 * @param float $lon1 Longitude of the first point.
 * @param float $lat2 Latitude of the second point.
 * @param float $lon2 Longitude of the second point.
 * @param bool  $inMiles If true, the distance will be returned in miles; otherwise, in kilometers.
 * @return float Distance between the two points.
 */
function haversineDistance($lat1, $lon1, $lat2, $lon2, $inMiles = false)
{
    // Earth radius in kilometers. For miles, you could use 3958.8.
    $earthRadius = $inMiles ? 3958.8 : 6371.0;

    // Convert degrees to radians.
    $lat1 = deg2rad($lat1);
    $lon1 = deg2rad($lon1);
    $lat2 = deg2rad($lat2);
    $lon2 = deg2rad($lon2);

    // Haversine formula
    $dLat = $lat2 - $lat1; // Delta latitude
    $dLon = $lon2 - $lon1; // Delta longitude

    $a = sin($dLat / 2) * sin($dLat / 2) +
         cos($lat1) * cos($lat2) * sin($dLon / 2) * sin($dLon / 2);

    $c = 2 * atan2(sqrt($a), sqrt(1 - $a));

    // Calculate the distance
    $distance = $earthRadius * $c;

    return $distance;
}

// Example usage
$lat1 = 40.7128; // New York City latitude
$lon1 = -74.0060; // New York City longitude
$lat2 = 34.0522; // Los Angeles latitude
$lon2 = -118.2437; // Los Angeles longitude

echo "Distance in kilometers: " . haversineDistance($lat1, $lon1, $lat2, $lon2) . " km\n";
echo "Distance in miles: " . haversineDistance($lat1, $lon1, $lat2, $lon2, true) . " miles\n";
?>

Popularity 2/10 Helpfulness 1/10 Language php

Source: Grepper

Tags: calculation distance gps php

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Contributed on May 06 2024

Abhijith

0 Answers Avg Quality 2/10

gps coordinattes distance calculation

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