PHP Math Exercises : Get the distance between two points on the earth
PHP math: Exercise-12 with Solution
Write a PHP function to get the distance between two points on the earth.
Pictorial Presentation:

Sample Solution:
PHP Code:
<?php
function lat_long_dist_of_two_points($latitudeFrom, $longitudeFrom, $latitudeTo, $longitudeTo){
$pi = pi();
$x = sin($latitudeFrom * $pi/180) *
sin($latitudeTo * $pi/180) +
cos($latitudeFrom * $pi/180) *
cos($latitudeTo * $pi/180) *
cos(($longitudeTo * $pi/180) - ($longitudeFrom * $pi/180));
$x = atan((sqrt(1 - pow($x, 2))) / $x);
return abs((1.852 * 60.0 * (($x/$pi) * 180)) / 1.609344);
}
// Distance from New York to London
echo lat_long_dist_of_two_points(40.7127, 74.0059, 51.5072, 0.1275).' mi'."\n";
?>
Sample Output:
3458.8601748984 mi
Flowchart :

PHP Code Editor:
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