Geo Location Search Using Radius

georadiusquery.php

public function getLocation() {
	$lat    = 37;
	$lon    = -122;
	$radius = 40;  
	$result = Zipcode::select(
	               DB::raw("*,
	                             ( 3959 * acos( cos( radians(?) ) *
	                               cos( radians( lat ) )
	                               * cos( radians( lng ) - radians(?)
	                               ) + sin( radians(?) ) *
	                               sin( radians( lat ) ) )
	                             ) AS distance"))
	               ->having("distance", "<", $radius)
	               ->orderBy("distance")
	               ->setBindings([$lat, $lon, $lat])
	               ->get();
	return $result;
}