[OpenLayers-Users] snap to road

[emmexx]

Jordan Anderson scrisse:
> Hey Maxx,
> 
> ridethecity.com does something similar to this and you can see it in two places:
> 
> On the main page (http://www.ridethecity.com), if you drop a marker or
> drag the market around, we send the lon/lat to the server and look up
> the nearest street name in our PostGIS street database (but only in
> NYC).

Thanks to you and to Stephen for your answers.

My doubt is about what kind of server I need to get this.
I mean, is it enough some standard hosting with php (and mysql) or I
need to setup some kind of map server?
Or can I query some public server to get the info needed to snap.
In the case of OSM can I get some "point" info from it or what OL gets
from OSM is just a picture?

Thank you
	maxx