Closest Postbox
selectDb( 'demo' ); $c = $d->selectCollection( 'poiConcat' );
$center = new GeoJSONPoint( (float) $_GET['lon'], (float) $_GET['lat'] );
$res = $c->aggregate( [
'$geoNear' => [
'near' => $center->getGeoJson(),
'distanceField' => 'distance',
'distanceMultiplier' => 1,
'maxDistance' => 5000,
'spherical' => true,
'query' => [ TAGS => 'amenity=post_box' ],
'limit' => 1,
]
] );]]>