Thanks, I actually found out that UPS in their dev kit has an address
validation tool, someone even wrote a PHP class to make it really easy
to use, so that will probably be the best solution for this!

On Jun 20, 6:05 pm, Rossko <[email protected]> wrote:
> > I am new to using the API, I don't have to make a map at this point,
> > but I need a system that cross checks user address/city/state/zip code
> > data against each other to make sure it is all valid.
>
> The Google geocoder is intended to provide a best-guess location for
> an given address.
>
> Taking an example, if you feed it
> '221b Baker St, London'
> it might know exactly where that is -
> or it might know where 200 & 300 are, and extrapolate an estimate -
> or might only know where Baker Street is, and assume that is what
> 'Baker St' meant -
> or it may never heard of Baker St and tell you where London is.
>
> Those are all successful geocodes, but don't really validate your
> address.  The geocoder does return an 'accuracy' figure which is
> intended to tell you how much faith to put in its guess ... however, a
> low accuracy (or even complete failure to geocode) may mean limited
> information on the geocoders side, not that there's anything wrong
> with the address.
>
> The other problem you face is the terms of use, which for Google's
> geocoder limit you to using the information for placing on a map.
>
> It's not the only geocoder - see
>    http://groups.google.com/group/Google-Maps-API/web/resources-non-goog...
> but I'm not sure any of those would be any more useful for this
> purpose.   Your users know best what their own address is, I doubt any
> automated system will serve much purpose here.
>
> cheers, Ross K
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