Retrieve neighbor hash(es) based on point coordinates and radius

[madorin]

Hi, Can you add a method to retrieve hash prefix to look for a specified point and radius as parameters? Something like: function Retrieve($Lat, $Lon, $Radius). For example, I need hash to look for nearest locations around one point in ~200km radius. It should work also for 180 degree meridian cases, in this case to return two or more values in array. Thanks!