From: Sean Renet <[EMAIL PROTECTED]>
> anyone have a tag to calcualte the ever annoying UPS CHECK DIGIT?
>
UPS Tracking Numbers appear in the following formats:
1Z 999 999 99 9999 999 9
9999 9999 999
T999 9999 999
(0123456789A~Z)
You can also use reference numbers to track a shipment (shipper
created).
UPS uses MOD 10 check digits ....
As an example, we will use 01234567890 as our first 11 digits
Step 1. Sum all digits in the ODD positions.
Example: 0 + 2 + 4 + 6 + 8 + 0 = 20
Step 2. Multiply this SUM by 3.
Example: 20 x 3 = 60
Step 3. Sum all digits in the EVEN positions.
Example: 1 + 3 + 5 + 7 + 9 = 25
Step 4. Add the SUM from Step 3 to the PRODUCT in Step 2.
Example: 25 + 60 = 85
Step 5. The CHECKSUM value is the smallest number which when added
to the SUM of Step 4 produces a multiple of 10
Example: The smallest number which, when added to 85, produces a multiple
of 10 is 5 (85 + 5 = 90). Therefore, our checkdigit for the number above is 5.
There are numerous sample implementations on the net. a cursory search
found perl scripts, a javascript validator ... etc. etc.
UPS provides a boat load of free software for developers ... sign up for a
myUPS account and go to online tools. They have a very complete collection
with lots of interfacing solutions/data formatting routines/error message
return control algorithms/fully prepped datastreaming modules ....
You can get inline html codings, datastream cgi access, or full blown
third party developer utilities and documentation.
Seems it would be easier to just use their tools and, if you need to do any
tracking number checking independent of their online system, all your answers
(specially prepped for their methods) are contained in the open source code
of their developer packages. I would be more confident of any CF tags that
are based on UPS documentation - besides you'll be able to develop templates
that take advantage of all the UPS services besides just tracking.
UPS doesn't call their developer tool set a SDK, but if you think of it as
being that, you won't go wrong.
Pan
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