Re: logic for grabbing what we need from user-input addresses for AVS?

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On Sun, 2008-10-19 at 10:03 +0100, Ashley Sheridan wrote:
> On Sun, 2008-10-19 at 01:10 -0400, Robert Cummings wrote:
> > On Sat, 2008-10-18 at 22:56 -0600, Govinda wrote:
> > > Hi all
> > > 
> > > This is not exactly PHP, but an issue that we have to work out in code  
> > > (whatever we use) -
> > > I am working on a shopping cart site which will have orders from any  
> > > country.
> > > 
> > > To cut down on fraudulent orders, our cc processor (whatever we call  
> > > them), to enable "Address Verification System (AVS)",  accepts a var/ 
> > > value which is "The numeric portion of the street address".  It is  
> > > "Required for AVS".  Now to get this from what the user input, I can:
> > > 
> > > - just read the *numeric* characters off the front of the first (of 2)  
> > > address text inputs, stopping grabbing them once I reach any non- 
> > > numeric char., or I could
> > > - get *any* numeric  chars input in that text area and concatenate  
> > > them all together (if there is more than one continuous run of them), or
> > > - get *any* numeric  chars input in *either* of the address text areas  
> > > and concatenate that all together (if there is more than one  
> > > continuous run of them), or
> > > - (what are the other possibilities?)
> > > 
> > > I am asking you guys/gals using AVS:  what are they looking for?  The  
> > > docs make this clear that they want: "The numeric portion of the  
> > > street address", but just because I can't think of addresses that  
> > > don't match a pattern I am thinking of does not mean they don't exist  
> > > or are not valid.  And how should the logic of my algorithm be written  
> > > if it was just for USA addresses?  ... and more importantly - if I am  
> > > writing it to handle addresses from any country?
> > > 
> > > Thanks for any insight/logic based on experience,  ;-)
> > 
> > AVS systems I've used don't ask for the street number. They ask for the
> > entire address and they do the matching for me and return a code
> > indicating what portions matched. For one client in particular an AVS
> > fail allows the order to go through, but it is flagged as peculiar and
> > requires someone to manually reject or allow the order to be fulfilled.
> > This was necessary since a lot of AVS failures were encountered for
> > regular clients.
> > 
> > If I had to make a choice given your system, I think I would just grab
> > the integer value of the first address line. No concatenation, and no
> > fussing with a second line...
> > 
> >     $number = (int)$input;
> > 
> > 
> It does sound like a bit of a flawed system you are using though, I
> mean, some addresses have only house names, not numbers, so there would
> be no number, and what about business addresses in business centres?
> "Unit 3 of Suchandsuch Business Centre, 20-30 Somesuch Road..." How
> would you go about getting the numerical part from that?

Is this targetted at me? Doesn't seem applicable to my own case since I
pass the entire address to the payment gateway.

Cheers,
Rob.
-- 
http://www.interjinn.com
Application and Templating Framework for PHP


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