-$aPlaceDetails['lat'] = (float) $aPointDetails['lat'];
-$aPlaceDetails['lon'] = (float) $aPointDetails['lon'];
-
+$aPlaceDetails['centroid'] = array(
+ 'type' => 'Point',
+ 'coordinates' => array( (float) $aPointDetails['lon'], (float) $aPointDetails['lat'] )
+);