Nice one Sean, here's the drupal version http://drupal.org/project/isbn
also contains code to distinguish country codes....
ap


On 10/21/11 1:48 PM, "Sean Hannan" <[log in to unmask]> wrote:

>GitHub search knows all:
>https://github.com/zapnap/isbn_validation/blob/master/lib/isbn_validation.
>rb
>
>-Sean
>
>
>On 10/21/11 1:44 PM, "Kozlowski,Brendon" <[log in to unmask]> wrote:
>
>> Hi all.
>> 
>> 
>> 
>> I'm somewhat surprised that I've never had to validate an ISBN manually
>>up
>> until now. I suppose that's a testiment to all of the software out
>>there.
>> 
>> 
>> 
>> However, I now find that I need to validate both the 10-digit and
>>13-digit
>> ISBNs. I realize there's also a check digit and a REGEX cannot check
>>this
>> value - one step at a time. Right now I just want to work on the REGEX.
>> 
>> 
>> 
>> Does anyone know the exact specifications of both forms of an ISBN? The
>>ISBN
>> organization's website didn't seem to be overly clear to me.
>>Alternatively, if
>> anyone has a full working regular expression for this purpose I would
>> definitely not mind if they'd be willing to share.
>> 
>> 
>> 
>> The only thing I'm doing which is abnormal is that I am not requiring
>>the
>> hyphenation or spaces between numbers since some of this data will be
>>coming
>> from a system, and some will be coming from human input.
>> 
>> 
>> 
>> 
>> Brendon Kozlowski
>> Web Administrator
>> Saratoga Springs Public Library
>> 49 Henry Street
>> Saratoga Springs, NY, 12866
>> [518] 584-7860 x217
>> 
>> Please consider the environment before printing this message.
>> 
>> To report this message as spam, offensive, or if you feel you have
>>received
>> this in error,
>> 
>> please send e-mail to [log in to unmask] including the entire contents and
>>subject
>> of the message.
>> 
>> It will be reviewed by staff and acted upon appropriately.