Nearby stores in Laravel - laravel

Question

i'm try to get neraby store in Laravel 5.1 I have geocoding parser that caluclate coorinate. But i have problem with haversine formulas. Basically i need that from table Aziende (Stores) given a lat, long e category passed trough url, fetch the nearby stores.
I try with this code:
$dove = Input::get('dove');
$categoria_id = Input::get('id_categoria');
// 4: check if any matches found in the database table
if (!empty($dove)) {
$response = \GoogleMaps::load('geocoding')->setParamByKey ('address', $dove)->get();
$response = json_decode($response, true);
$latitude = $response['results'][0]['geometry']['location']['lat'];
$longitude = $response['results'][0]['geometry']['location']['lng'];
$radius = '5';
$aziende = DB::table('aziende')
->select(
( 'lat * acos( cos( radians(50) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians(-122) )
+ sin( radians(37) ) * sin( radians( lat ) ) ) as distance') )->get();
} else {
$aziende = DB::table("aziende")->where('categoria', $categoria_id)->get();
}
?>

Answer 1

The following should work for you to implement the haversine formula in an SQL query. My answer is assuming you have a model setup to correspond with the database table "aziende".
$lat = floatval($response['results'][0]['geometry']['location']['lat']);
$lng = floatval($response['results'][0]['geometry']['location']['lng']);
$radius = 5;
$distance = DB::raw("*, ( 6371 * acos( cos( radians($lat) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians($lng) ) + sin( radians($lat) ) * sin( radians( lat ) ) ) ) AS distance");
$aziende = Aziende::select($distance)->orderBy('distance')->where('distance', '<=', $radius)->get();