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

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; > > Cheers, > Rob. > -- > http://www.interjinn.com > Application and Templating Framework for PHP > > 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? Ash www.ashleysheridan.co.uk