CODEWITHSUNDEEP
phpjsongoogle-mapsgeometry
zeomega
zeomega

Reputation: 355

check if a city is in a country with northeast lat/lng and southwest lat/lng

I'm working on a PHP application which uses google API's, and i would like to check if a city is in a country.

for example : is Paris in France ?

France geometry bounds :

 "northeast" : {
                  "lat" : 51.089166,
                  "lng" : 9.560067799999999
               },
 "southwest" : {
                  "lat" : 41.3423276,
                  "lng" : -5.141227900000001
               }

Paris geometry bounds :

 "northeast" : {
              "lat" : 48.9021449,
              "lng" : 2.4699208
           },
 "southwest" : {
              "lat" : 48.815573,
              "lng" : 2.224199
           }

Thanks.

Upvotes: 1

Views: 318

Answers (1)

aksu
aksu

Reputation: 5235

Interesting question. Check this out I made an example:

function inRange($value, $max, $min) {
   return $value >= $min && $value <= $max;
}

$city_coords_northeast = // put your northeast city coords here(array)
$city_coords_southwest = // put your southwest city coords here(array)

$country_coords_northeast = // put your northeast country coords here(array)
$country_coords_southwest = // put your southwest country coords here(array)

if( inRange($city_coords_northeast['lat'], $country_coords_northeast['lat'], $country_coords_southwest['lat']) && 
    inRange($city_coords_northeast['long'], $country_coords_northeast['long'], $country_coords_southwest['long']) &&
    inRange($country_coords_southwest['lat'], $city_coords_northeast['lat'], $city_coords_southwest['lat']) &&
    inRange($country_coords_southwest['long'], $city_coords_northeast['long'], $city_coords_southwest['long']) ) {
   echo 'Paris is in France!';
}

PS: I don't think this is very fast, but it makes its job.

Upvotes: 1

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